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Publications 1981-1990, #97–295

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97. "Studies of the Structure and Bonding of Inorganic Clusters," K. I. Peterson, P. M. Holland, R. G. Keesee, N. Lee, T. D. Märk and A. W. Castleman, Jr., Surf. Sci., 106, 136 (1981).

98. "Studies of Small Clusters: Relationship to Understanding Nucleation and Surfaces," A. W. Castleman, Jr., P. M. Holland, B. D. Kay, R. G. Keesee, T. D. Märk, K. I. Peterson, F. J. Schelling and B. L. Upschulte, J. Vac. Sci. Technol., 18, 586 (1981).

99. "Studies of Clusters About Metallic Ions," A. W. Castleman, Jr., P. M. Holland, D. M. Lindsay, T. D. Märk, K. I. Peterson, F. J. Schelling, R. J. Stanley, and B. L. Upschulte, Proc. American Society for Mass Spectrometry Meeting, Minneapolis, MN, May 25-30, pp 506-7 (198l).

100. "Nucleation and Growth of Stratospheric Aerosols," A. W. Castleman, Jr., and R. G. Keesee, in Annual Review of Earth and Planetary Sciences, Vol. 9, Annual Reviews, Inc., Palo Alto, 1981, pp 227-249.

101. "Experimental Observations of New Inorganic Cluster Species in the Gas Phase, Their Atmospheric Implications," K. I. Peterson, T. D. Märk and A. W. Castleman, Jr., Proc. Symposium on Atomic and Surface Physics, Salzburg, Austria, February 2-10, 1980, W. Lindinger, F. Howorka and F. Egger, Eds., STUDIA, A-6020 Innsbruck, 1980, pp 284-289.

102. "Studies of Small Clusters: Their Formation and Properties," A. W. Castleman, Jr., and T. D. Märk, Proc. Symposium on Atomic and Surface Physics, Salzburg, Austria, February 2-10, 1980, W. Lindinger, F. Howorka and F. Egger, Eds., STUDIA, A-6020, Innsbruck, 1980, pp 290-298.

103. "Investigation of the Decomposition of Electron Impact Produced Molecular Cluster Ions," J. H. Futrell, K. Stephan, A. W. Castleman, Jr., and T. D. Märk, Proc. 8th International Symposium on Molecular Beams, Cannes, France, June 1-5, 1981, pp 262-265.

104. "Studies of Gas-Phase Clusters: The Solvation of HNO3 in Microscopic Aqueous Clusters," B. D. Kay, V. Hermann and A. W. Castleman, Jr., Chem. Phys. Lett., 80, 469-74 (1981).

105. "Studies of the Formation and Structure of Homomolecular and Heteromolecular Clusters," A. W. Castleman, Jr., B. D. Kay, V. Hermann, P. M. Holland and T. D. Märk, Surf. Sci., 106, 179 (1981).

106. "Properties of Clusters in the Gas Phase," A. W. Castleman, Jr., in: Electron and Ion Swarms, Chapt. 3, L. G. Christophorou, Ed., Pergamon Press, 1981, pp 189-201.

107. "A Reconsideration of the Theory of Capture Cross-Sections for Ion/Molecule Reactions and a Total Energy and Angular Momentum Conserved Average Charge-Dipole Interaction Theory (TEAMS)," Eric Tsu-Yin Hsieh and A. W. Castleman, Jr., Int. J. Mass Spectrom. Ion Phys., 40, 295 (1981).

108. "Structure and Stability of the Gas Phase Complex of SO2 with H2O," P. M. Holland and A. W. Castleman, Jr., J. Photochem., 16, 347 (1981).

109. "Studies of Hydrogen-Bonded Clusters Formed in Molecular Beams and Their Application in Investigating Transitions from the Gas to the Condensed State," A. W. Castleman, Jr., B. D. Kay ,and V. Hermann, Proc. 8th International Symposium on Molecular Beams, Cannes, France, June 1-5, 1981, pp 255-257.

110. "Ion Energetics Measurements of Neutral Clusters Formed in Supersonic Free Jet Expansion," K. Stephan, J. H. Futrell, K. I. Peterson, A. W. Castleman, Jr., H. E. Wagner and T. D. Märk, Proc. 8th International Symposium on Molecular Beams, Cannes, France, June 1-5, 1981, pp 211-215.

111. "Mass Spectrometric Investigation of the Kinetics and Energetics of the Ionization of van der Waals Clusters," J. H. Futrell, K. Stephan, T. D. Märk, K. I. Peterson, A. W. Castleman, Jr., and N. Djuric, Proc. 29th Annual Conference on Mass Spectrometry and Allied Topics, Minneapolis, pp 150-151 (1981).

112. "The Thermochemical Properties of Gas-Phase Transition Metal Ion Complexes," P. M. Holland and A. W. Castleman, Jr., J. Chem. Phys., 76, 4195-205 (1982).

113. "Experimental Studies of Ion Clustering: Relationship to Aerosol Formation Processes and Some Atmospheric Implications," A. W. Castleman, Jr., J. Aerosol Sci., 13, 73-85 (1982).

114. "Neutral and Charged Clusters in the Atmosphere--Their Importance and Potential Role in Heterogeneous Catalysis," A. W. Castleman, Jr., in Heterogeneous Atmospheric Chemistry, D. R. Schryer, Editor, American Geophysical Union, Washington, pp 13-27 (1982).

115. "Executive Summary, Conference on Multiphase Processes Including Heterogeneous Catalysis Relevant to Atmospheric Chemistry," State University of New York at Albany, A. W. Castleman, Jr., S. Friedlander, H. Frisch, E. McLaren, V. A. Mohnen, T. Novakov, H. Reiss, R. Ragowski and J. H. Seinfeld, Atm. Env., 15, 45 (1981).

116. "The Chemical Kinetics of Aerosol Formation," A. W. Castleman, Jr., and R. G. Keesee, in The Stratospheric Aerosol Layer, Vol. 28, R. C. Whitten, Ed., Springer-Verlag, Berlin, 1982, pp 69-92.

117. "Novel Corrosion-Resistant Supersonic Expansion Cluster Source," B. D. Kay, T. G. Lindeman and A. W. Castleman, Jr., Rev. Sci. Instrum., 53, 473-75 (1982).

118. "Studies of Clusters in the Gas Phase and Application to an Understanding of Transitions from the Gaseous to the Surface and Condensed State," A. W. Castleman, Jr., SASP '82 Contributions, Maria Alm/Salzburg, pp 1-24.

119. "Ion Association Processes and Ion Clustering: Elucidating Transitions from the Gaseous to the Condensed Phase," A. W. Castleman, Jr., P. M. Holland and R. G. Keesee, Radiat. Phys. Chem., 20, 57-74 (1982).

120. "Studies of the Energetics and Structures of Clusters of Molecules about Ions Utilizing Laser Photodissociation and High Pressure Mass Spectrometric Techniques," A. W. Castleman, Jr., P. M. Holland, D. E. Hunton, R. G. Keesee, T. G. Lindeman, K. I. Peterson, F. J. Schelling and B. L. Upschulte, Ber. Bunsenges. Phys. Chem., 86, 866-69 (1982).

121. "Evidence for the Existence of Structures in Gas-Phase Homomolecular Clusters of Water," V. Hermann, B. D. Kay and A. W. Castleman, Jr., Chem. Phys., 72, 185-200 (1982).

122. "The Thomson Equation Revisited in Light of Ion Clustering Experiments," P. M. Holland and A. W. Castleman, Jr., J. Phys. Chem., 86, 4181-88 (1982).

123. "An Electron Impact Study of Ammonia Clusters in a Supersonic Molecular Beam: Appearance Potentials of NH4+, (NH3)2+, (NH3)2H+, (NH3)3H+ and (NH2NH3)+," K. Stephan, J. H. Futrell, K. I. Peterson, A W. Castleman, Jr., H. E. Wagner, N. Djuric and T. D. Märk, Int. J. Mass Spectrom. Ion Phys., 44, 167-81 (1982).

124. "An Electron Impact Study of Carbon Dioxide Dimers in a Supersonic Molecular Beam: Appearance Potentials of (CO2)2+, (CO6CO2)+ and (Ar6CO2)+," K. Stephan, J. H. Futrell, K. I. Peterson, A. W. Castleman, Jr., and T. D. Märk, J. Chem. Phys., 77, 2408-15 (1982).

125. "Studies of the Laser Photodissociation of CO3- and CO3--Water Complexes," A. W. Castleman, Jr., D. E. Hunton, D. M. Lindsay, and T. G. Lindeman, Int. J. Mass Spectrom. Ion Phys., 47, 199 (1983).

126. "Some Considerations of the Dynamics of Ion Molecule Cluster Reactions," A. W. Castleman, Jr., E. Hsieh, B. L. Upschulte, F. J. Schelling, R. G. Keesee and P. M. Holland, Int. J. Mass Spectrom. Ion Phys., 47, 191-94 (1983).

127. "Energetics and Structure of Na+ Cluster Ions," A. W. Castleman, Jr., K. I. Peterson, B. L. Upschulte, and F. J. Schelling, Int. J. Mass Spectrom. Ion Phys., 47, 203-06 (1983).

128. "Experimental Studies of Ion Clustering and Their Atmospheric Implications," A. W. Castleman, Jr., Proc. Atmospheric Electricity (L. H. Ruhnke and J. Latham, Eds.) A. Deepak Publishing, pp 1-3 (1983).

129. "Small Clusters: Aerosol Precursors," A. W. Castleman, Jr. and R. G. Keesee, Aerosol Sci. and Technology, 2, 145-52 (1983).

130. "Unimolecular Dissociation of N4+," K. Stephan, T. D. Märk, and A. W. Castleman, Jr., J. Chem. Phys., 78, 2953-55 (1983).

131. "Ion Clusters: Summary of the Panel Discussion," A. W. Castleman, Jr., in Ionic Processes in the Gas Phase, NATO ASI Series, Vol. 118,M. A. Almoster Ferreira, Ed., D. Reidel Publ. Co., 1983, pp 327-354.

132. "Experimental Studies of Cluster Ions," A. W. Castleman, Jr. and T. D. Märk, in Adv. Atomic Molecular Phys., 20, 65-172 (1984).

133. "Photodissociation Dynamics of CO3- and its Hydrates," D. E. Hunton, M. Hofmann, T. G. Lindeman, and A. W. Castleman, Jr., Proc. 3lst Annual Conference on Mass Spectrometry and Allied Topics, Boston, May, 486-487 (1983).

134. "Photoionization of Metal Clusters and Their Oxides and Chlorides," A. W. Castleman, P. D. Dao, K. I. Peterson and R. W. Farley, Proc. 3lst Annual Conference on Mass Spectrometry and Allied Topics, Boston, May, 484-485 (1983).

135. "Properties of N4+," T. D. Märk, K. Stephan, J. H. Futrell, A. W. Castleman, Jr., and H. Helm, Proc. 31st Annual Conference on Mass Spectrometry and Allied Topics, Boston, May, 482-483 (1983).

136. "Studies of Small Clusters: Recent Advances in Understanding Nucleation Phenomena," A. W. Castleman, Jr., Proc. Edgewood Conference on Aerosols and Obscuration Science, Aberdeen Proving Ground, MD, June 21-25, 1983, pp 11-21.

137. "Dynamics, Energetics and Structures of Weakly Bound Molecules: Elucidating Transitions from the Gaseous to the Condensed Phase," A. W. Castleman, Jr., and B. D. Kay, Faraday Discussion No. 73, van der Waals Molecules, Royal Society of Chemistry, Burlington House, London, pp 124-126; 297-301; 419-421 (1983).

138. "Metastable Decomposition of Ar3+ Cluster Ions Into Ar2+ and Ar+," K. Stephan, T. D. Märk, E. Märk, A. Stamatovic, N. Djuric and A. W. Castleman, Jr., Beitr. Plasmaphys., 23, 369-72 (1983).

139. "Mass Spectrometric Investigation of NH3 and CO2 van der Waals Clusters: Appearance Potentials and Stability," K. Stephan, T. D. Märk, J. H. Futrell, and A. W. Castleman, Jr., Vacuum Technology and Applied Ion Physics, 33, 77-85 (1983).

140. "Understanding the Middle Atmosphere via the Laboratory: Ion Cluster Investigations," R. G. Keesee and A. W. Castleman, Jr., Annales Geophysicae, 1, 75-80 (1983).

141. "The Photoionization of Clusters and the Onset of Metallic Conductivity," A. W. Castleman, Jr., Proc. 1983 CSL Scientific Conference on Obscuration and Aerosol Research, Aberdeen Proving Ground, MD, pp 25-34 (1983).

142. "Cluster Properties Studied by Electron Impact Ionization," T. D. Märk, K. Stephan, H. Helm, J. H. Futrell, E. Märk, K. I. Peterson, A. W. Castleman, Jr., N. Djuric and A. Stamatovic, Proc. 3rd Symposium on Atomic and Surface Physics, Salzburg, Austria, February 7-12 (1982).

143. "Cluster Ions: Understanding Transitions from the Gaseous to the Condensed State," A. W. Castleman, Jr., Proc. l3th Annual Conference on Mass Spectrometry and Allied Topics, Honolulu, Hawaii, June 6-11, pp 209-211 (1982).

144. "Chemistry of Ions in the Gas Phase," A. W. Castleman, Jr., in Ionic Processes in the Gas Phase, NATO ASI Series, Vol. 118, M. S. Almoster Ferreira, Ed., D. Reidel Publishing Company, pp 327-354 (1983).

145. "The Thermochemical Properties of Two-Component Cluster Ions," R. G. Keesee and A. W. Castleman, Jr., Proc. 1983 Scientific Conference on Chemical Defense Research, Aberdeen Proving Ground, MD, November 14-18 (1983).

146. "The Interaction of Sulfur Trioxide with Water Clusters," R. G. Keesee, R. Hofmann-Sievert, and A. W. Castleman, Jr., in Chemistry of Multiphase Atmospheric Systems (W. Jaeschke, Ed.) NATO ASI Series G, Vol. 6, p. 501-05 (1986).

147. "Heterogeneous Reactions: Current Status and Research Needs," R. Turco, A. W. Castleman, Jr., C. S. Kiang, M. P. McCormick, and P. H. McMurry, (Gas-to-Particle Conversion Section), NASA Conference Publication 2320 (1984).

148. "Resonance Enhanced Multiphoton Ionization (2+1) of the B and C' States of Ammonia," R. J. Stanley, O. Echt, P. D. Dao, and A. W. Castleman, Jr., J. Appl. Phys. B, 32, 35-38 (1983).

149. "Introduction: Advances and Opportunities in Cluster Research," A. W. Castleman, Jr., in Electronic and Atomic Collisions (J. Eichler, I. V. Hertel and N. Stolterfoht, Eds.) Elsevier Science Publishers, pp 579-590 (1984).

150. "Laser Photodissociation of CO3- and Its Hydrates," A. W. Castleman, Jr., D. E. Hunton, M. Hofmann, and T. G. Lindeman, in Electronic and Atomic Collisions (J. Eichler, I. V. Hertel, N. Stolterfoht, and U. Wille, Eds.) Elsevier Science Publishers, p 58 (1983).

151. "Metastable Dissociations of Small Cluster Ions," K. Stephan, A. Stamatovic, A. W. Castleman, Jr., J. H. Futrell, and T. D. Märk, in Electronic and Atomic Collisions (J. Eichler, I. V. Hertel, N. Stolterfoht, and U. Wille, Eds.) Elsevier Science Publishers, p 291 (1983).

152. "Photoionization Studies of Na2Cl and Na2O and Reactions of Metal Clusters," K. I. Peterson, P. D. Dao, and A. W. Castleman, Jr., J. Chem. Phys., 79, 777-83 (1983).

153. "Photoionization of Sodium Clusters," K. I. Peterson, P. D. Dao, R. W. Farley, and A. W. Castleman, Jr., J. Chem. Phys., 80, 1780-85 (1984).

154. "The Reaction of SO3 with Water Clusters and the Formation of H2SO4," R. Sievert and A. W. Castleman, Jr., J. Phys. Chem., 88, 3329-33 (1984).

155. "Isotope Enrichment During the Formation of Water Clusters in Supersonic Free Jet Expansions," B. D. Kay and A. W. Castleman, Jr., J. Chem. Phys., 78, Part II, 4297-4302 (1983).

156. "Photodissociation of CO3-: Evidence for a Long-Lived Excited State," D. E. Hunton, M. Hofmann, T. G. Lindeman, and A. W. Castleman, Jr., Chem. Phys. Lett., 96, 328-32 (1983).

157. "The Formation and Thermochemical Properties of Multiligand Complexes: Application to Detection of Trace Species," A. W. Castleman, Jr. and R. G. Keesee, Proc. 1982 Chemical Systems Laboratory Scientific Conference on Chemical Defense Research, pp 287-194 (1982).

158. "The Photoionization of Oxidized Metal Clusters," P. D. Dao, K. I. Peterson, and A. W. Castleman, Jr., J. Chem. Phys., 80, 56364 (1984).

159. "Thermochemical Properties of Gas-Phase Mixed Clusters: H2O/CO2 with Na+, K. I. Peterson, T. D. Märk, R. G. Keesee and A. W. Castleman, Jr., J. Phys. Chem., 88, 2880-83 (1984).

160. "Studies of Ions in a Drift Field: Laser Diagnostics of Excited States and Measurements of Thermochemical Properties at Equilibrium," A. W. Castleman, Jr. and R. G. Keesee, SWARM (W. Lindinger, H. Villinger, W. Federer, Eds.) pp 233-240 (1983).

161. "Mass Spectral and Electric Deflection Study of Acetic Acid Clusters," R. Sievert, I. Cadez, J. Van Doren, and A. W. Castleman, Jr., J. Phys. Chem., 88, 4502-05 (1984).

162. "Multiphoton Ionization of Ammonia Clusters with a Tunable Laser," O. Echt, R. J. Stanley, P. D. Dao, and A. W. Castleman, Jr., Deutsche Bunsen-Gesellschaft fur Physikalische Chemie, 88, 217-19 (1984).

163. "The Thermochemical Properties of Two-Component Cluster Ions," R. G. Keesee and A. W. Castleman, Jr., Proc. 1983 Scientific Conference on Chemical Defense Research, pp 93-100 (1984).

164. "Cluster Ion Physics," T. D. Märk and A. W. Castleman, Jr., Proc. 1983 Utah Workshop on Gaseous Ion Chemistry, The University of Utah, Salt Lake City, September 12-16, 1983.

165. "Unimolecular Decay of Metastable CO3-," D. E. Hunton, C. R. Albertoni, T. D. Märk, and A. W. Castleman, Jr., Chem. Phys. Lett., 106, 544-49 (1984).

166. "Mass Spectral and Electric Deflection Study of Acetic Acid Clusters and Sulfur Trioxide/Water Clusters," R. G. Keesee, R. Sievert-Hofmann, and A. W. Castleman, Jr., Deutsche Bunsen-Gesellschaft fur Physikalische Chemie, 88, 273-74 (1984).

167. "Structure and Dynamics of Negative Cluster Ions: Photodissociation, Collision-Induced Metastable Dissociation of CO3-(H2O)0,1,2,3," D. E. Hunton, M. Hofmann, C. R. Albertoni, T. G. Lindeman, T. D. Märk, and A. W. Castleman, Jr., SASP '84 Contributions, Maria Alm Salzburg, pp 387-392 (1984).

168. "Multiphoton Ionization of (NH3)n and Unimolecular Dissociation of Ammonia Cluster Ions," O. Echt, S. Morgan, P. D. Dao, R. J. Stanley, and A. W. Castleman, Jr., SASP '84 Contributions, Maria Alm/Salzburg, pp 246-251 (1984).

169. "Cluster Ion Association Reactions: Thermochemistry and Relationship to Kinetics," A. W. Castleman, Jr., and R. G. Keesee, in Swarms of Ions and Electrons in Gases, (W. Lindinger, T. D. Märk, and F. Howorka, Eds.) Springer-Verlag, New York, pp 167-193 (1984).

170. "Gas-to-Particle Conversion: The Role of Pre-Existing Dimers in the Formation of Clusters During Supersonic Expansion," R. G. Keesee and A. W. Castleman, Jr., Proc. 1984 CRDC Conference on Obscuration and Aerosol Research, Aberdeen Proving Ground, MD, June 25-29, 1984, pp 13-21.

171. "Photodissociation Dynamics of CO3-," D. E. Hunton, M. Hofmann, T. G. Lindeman and A. W. Castleman, Jr., J. Chem. Phys., 82, 134-50 (1985).

172. "Photodissociation Spectroscopy and Dynamics of Negative Ion Clusters. II. CO3-(H2O)1,2,3," D. E. Hunton, M. Hofmann, T. G. Lindeman, C. Albertoni, and A. W. Castleman, Jr., J. Chem. Phys., 82, 2884-95 (1985).

173. "Photodissociation of Negative Ions and Their Clusters: CO3- and Its Hydrates," A. W. Castleman, Jr., D. E. Hunton, M. Hofmann, and T. G. Lindeman, Ber. Bunsenges. Phys. Chem., 89, 348-349 (1985).

174. "Unimolecular Dissociation of Cluster Ions Following Multiphoton Ionization and Subsequent Proton Transfer Reactions," A. W. Castleman, Jr., O. Echt, S. Morgan, and P. D. Dao, Ber. Bunsenges. Phys. Chem., 89, 281-284 (1985).

175. "Studies of Mixed Clusters via High Pressure Mass Spectrometry," B. L. Upschulte, F. J. Schelling, K. I. Peterson, D. H. Evans, R. G. Keesee, and A. W. Castleman, Jr., Proc. 32nd Annual Conference on Mass Spectrometry and Allied Topics, San Antonio, TX, May 27-June 1, pp 229-230 (1984).

176. "One- and Two-Color Resonance Enhanced Multiphoton Ionization of van der Waals Molecules: Studies of Spectroscopic Shifts as a Function of Degree of Aggregation," A. W. Castleman, Jr., P. D. Dao, and S. Morgan, Book of Extended Abstracts, International Conference on Multiphoton Processes III, Crete, Greece, September 5-11, p 17 (1984).

177. "Multiphoton Ionization of Ammonia Clusters and the Dissociation of Cluster Ions," A. W. Castleman, Jr., O. Echt, P. D. Dao, and S. Morgan, Book of Extended Abstracts, International Conference on Multiphoton Processes III, Crete, Greece, September 5-11, p 18 (1984).

178. "Thermochemical Data on Gas-Phase Ion-Molecule Association and Clustering Reactions," R. G. Keesee and A. W. Castleman, Jr., J. Phys. Chem. Ref. Data, 15, 1011-1071 (1986).

179. "Resonance Enhanced Multiphoton Ionization of van der Waals Molecules: Studies of Spectroscopic Shifts of Phenyl Acetylene Clustered with Molecules and Atoms," P. D. Dao, S. Morgan, and A. W. Castleman, Jr., Chem. Phys. Lett., 111, 38-46 (1984).

180. "Thermochemical Properties of Gas Phase Mixed Clusters: Water and Sulfur Dioxide Na+ and Cl-," B. L. Upschulte, F. J. Schelling, R. G. Keesee, and A. W. Castleman, Jr., Chem. Phys. Lett., 111, 389-94 (1984).

181. "A Classical Trajectory Study of the Angular Momentum Coupling Model: I. The Influence of Anisotropic Polarizability on the Lifetimes of Complexes Formed in Ion-Molecule Collisions," F. J. Schelling and A. W. Castleman, Jr., Chem. Phys. Lett., 111, 47-52 (1984).

182. "The Use of Similarity Profiles in Studying Cluster Formation in Molecular Beams: Evidence for the Role of Preexisting Dimers," J. J. Breen, K. Kilgore, K. Stephan, R. Hofmann-Sievert, B. D. Kay, R. G. Keesee, T. D. Märk, J. M. Van Doren and A. W. Castleman, Jr., Chem. Phys., 91, 305-13 (1984).

183. "Clusters of Water and Other Molecules: Structures and Reaction Dynamics," A. W. Castleman, Jr., Proc. National Meeting of the Chemical Society of Japan, Tokyo, April 1-4, pp 1836-1839 (1985).

184. "Studies of Cluster Ionization and Dissociation Processes," A. W. Castleman, Jr., Proc. 33rd Annual ASMS Meeting, San Diego, CA, May 26-31, 69-71 (1985).

185. "Mass Spectrometric Studies of Bimolecular Reactions in a Selected Ion Flow Tube (SIFT)," R. J. Shul, B. L. Upschulte, R. Passarella, R. G. Keesee, and A. W. Castleman, Jr., Proc. 33rd Annual ASMS Meeting, San Diego, CA, May 26-31, pp 317-318 (1985).

186. "Mass Spectrometric and Chemiluminescent Studies of CS2+ in a Flowing Argon Afterglow," R. J. Shul, B. L. Upschulte, R. Passarella, R. E. Leuchtner, R. G. Keesee, and A. W. Castleman, Jr., Proc. 33rd Annual ASMS Meeting, San Diego, CA, May 26-31, pp 146-147 (1985).

187. "One- and Two-Color Resonance Enhanced Multiphoton Ionization of van der Waals Molecules: Studies of Spectroscopic Shifts as a Function of Degree of Aggregation," A. W. Castleman, Jr., P. D. Dao, S. Morgan, and R. G. Keesee, Proc. Fourteenth International Conference on the Physics of Electronic and Atomic Collisions, Palo Alto, CA, July 24-30, p 655 (1985).

188. "Studies of Charge Transfer Processes in a Flow Tube," R. G. Keesee, B. L. Upschulte, R. J. Shul, R. Passarella, R. E. Leuchtner and A. W. Castleman, Jr., Proc. Fourteenth International Conference on the Physics of Electronic and Atomic Collisions, Palo Alto, CA, July 24-30, p 588 (1985).

189. "Multiphoton Ionization of Ammonia Clusters and the Dissociation Dynamics of Protonated Cluster Ions," O. Echt, P. D. Dao, S. Morgan and A. W. Castleman, Jr., J. Chem. Phys., 82, 4076-85 (1985).

190. "Electron Impact Ionization of Rare Gas Clusters: Stability of Singly and Doubly Charged Ions," K. Leiter, A. Stamatovic, W. Ritter, K. Stephan, A. W. Castleman, Jr., and T. D. Märk, Proc. 2nd European Conference on Atomic and Molecular Physics, Amsterdam (1985).

191. "Molecular Beam Electric Deflection Study of Hydrogen-Bonded Clusters (H2O)N, (CH3OH)N, and (C2H5OH)N," Bruce D. Kay and A. W. Castleman, Jr., J. Phys. Chem., 89, 4867-85 (1985).

192. "Ions and Cluster Ions: Experimental Studies and Atmospheric Observations," R. G. Keesee and A. W. Castleman, Jr., J. Geophys. Res., 90, 5885-5890 (1985).

193. "Studies of the Dynamics and Properties of Clusters," A. W. Castleman, Jr., P. D. Dao, O. Echt, S. Morgan, J. J. Breen, K. Kilgore, and R. G. Keesee, Surface Sci., 156, 469-86 (1985).

194. "Two-Color Resonance Enhanced Multiphoton Ionization of van der Waals Molecules: Studies of Spectroscopic Shifts and Ionization Thresholds of Paraxylene Clustered with Argon," P. D. Dao, S. Morgan and A. W. Castleman, Jr., Chem. Phys. Lett., 113, 219-24 (1985).

195. "Evidence for the Fragmentation of Clusters Upon Electron-Impact Ionization from Deflection Experiments," A. W. Castleman, Jr., and B. D. Kay, Int. J. Mass Spectrom. Ion Proc., 66, 217-22 (1985).

196. "Cluster Ions: Their Formation, Properties, and Role in Elucidating the Properties of Matter in the Condensed State," A. W. Castleman, Jr. and T. D. Märk, Chapter 12 in Gaseous Ion Chemistry/Mass Spectrometry, John Wiley and Sons, New York, pp 259-303 (1986).

197. "A Molecular Beam Electric Deflection Study of Clusters: Acid and Salt Molecules in Microscopic Aqueous and Ammonia Clusters," Bruce D. Kay, R. Hofmann-Sievert, and A. W. Castleman, Jr., Chem. Phys., 102, 407 (1986).

198. "Chemiluminescence of CS2+ Initiated by a Thermal Energy Charge Transfer Reaction with Ar+," B. L. Upschulte, R. J. Shul, R. Passarella, R. E. Leuchtner, R. G. Keesee, and A. W. Castleman, Jr., J. Phys. Chem., 90 100-04 (1986).

199. "Atom Clusters," in the 1987 McGraw-Hill Yearbook of Science and Technology, A. W. Castleman, Jr., McGraw-Hill Publishers, pp 94-97 (1986).

200. "Reaction of Sulfur Containing Compounds with Atmospheric Ions," A. W. Castleman, Jr. and R. G. Keesee, Proc. CRDC Conference on Chemical Defense, Aberdeen Proving Ground, MD, pp 669-674 (1986).

201. "Electron-Cluster Interactions," R. G. Keesee, A. W. Castleman, Jr., and T. D. Mark, Swarm Studies and Inelastic Electron-Molecule Collisions (L. A. Pitchford, B. V. McKoy, A. Chutjian, and S. Trajmar, Eds.) Springer-Verlag, pp 351-366 (1986).

202. "The Interaction of Clusters with Reactive Species: Initial Stages in the Evolution of Particle Composition," R. G. Keesee and A. W. Castleman, Jr., Proc. CRDC Conference on Obscuration and Aerosol Research, Aberdeen Proving Ground, MD, pp 13-16 (1986).

203. "Delayed Ionization Following Resonant Photon Absorption and Intra-Cluster Electron Transfer," P. D. Dao and A. W. Castleman, Jr., J. Chem. Phys. 84, 1434-42 (1986).

204. "Dynamics of Cluster Dissociation Following Multiphoton Ionization," A. W. Castleman, Jr., in Optical Science and Engineering, Series 6, Advances in Laser Science (W. C. Stwalley and M. Lapp, Eds.) pp 483-487 (1986).

205. "Ionic Clusters," A. W. Castleman, Jr. and R. G. Keesee, Chem. Rev. 86, 589-618 (1986).

206. "Clusters: Bridging the Gas and Condensed Phases," A W. Castleman and R. G. Keesee, Acc. Chem. Res. 19, 413-19 (1986).

207. "Clusters: Properties and Formation," A. W. Castleman, Jr. and R. G. Keesee, Ann. Rev. Phys. Chem. 37, 525-50 (1986).

208. "Acid Clusters," R. G. Keesee and A. W. Castleman, Jr., ACS Symposium Series on Acid Rain 31, 317-23 (1986).

209. "Metallic Ions and Clusters: Formation, Energetics, and Reaction," A. W. Castleman, Jr. and R. G. Keesee, Z. für Physik D 3, 167-176 (1986).

210. "Photodissociation of Negative Ions and Their Clusters," A. W. Castleman, Jr., C. R. Albertoni, K. O. Marti, D. E. Hunton, and R. G. Keesee, Faraday Discuss. Chem. Soc. 82, 261-73 (1986).

211. "Dynamics of Cluster Dissociation," R. G. Keesee and A. W. Castleman, Jr., Proc. International Laser Science Conference, Seattle, Washington, October 19-24 (1986).

212. "Kinetics of Gas Phase Metal Ions," S. Sigsworth, L. DiFazio, R. Leuchtner, R. G. Keesee, and A. W. Castleman, Jr., Proc. 34th Annual Conference on Mass Spectrometry and Allied Topics, June 8-13, Cincinnati, Ohio, pp 797-798 (1986).

213. "Thermochemical Properties of Potassium Cations," D. H. Evans, R. G. Keesee, and A. W. Castleman, Jr., Proc. 34th Annual Conference on Mass Spectrometry and Allied Topics, June 8-13, Cincinnati, Ohio, pp 993-994 (1986).

214. "Diagnostic Studies of the Flow Dynamic Effect on Rate Coefficients Obtained with a Selected Ion Flow Tube (SIFT)," R. J. Shul, R. Passarella, B. L. Upschulte, R. G. Keesee, and A. W. Castleman, Jr., Proc. 34th Annual Conference on Mass Spectrometry and Allied Topics, June 8-13, Cincinnati, Ohio, pp 606-607 (l986).

215. "Thermal Energy Charge Transfer Reactions of Ar+ and Ar2+," R. Passarella, R. J. Shul, B. L. Upschulte, R. G. Keesee, and A. W. Castleman, Jr., Proc. 34th Annual Conference on Mass Spectrometry and Allied Topics, June 8-13, Cincinnati, Ohio, pp 993-994 (l986).

216. "Discussions on the Dynamics of Cluster Ionization and Dissociation," A. W. Castleman, Jr., Faraday Discuss. Chem. Soc. 82, pp 296-297; 298-300; 387-390 (1986).

217. "Diagnostics of Flow Tube Techniques for Ion Molecule Reactions," B. L. Upschulte, R. J. Shul, R. Passarella, R. G. Keesee and A. W. Castleman, Jr., Int. J. Mass Spectrom. Ion Proc. 75, 27-45 (1987).

218. "The Formation of Clusters with Reactive Species: Precursors to Aerosol Formation in the Ammonia-Sulfur Dioxide System," R. G. Keesee, K. J. Kilgore, J. J. Breen, and A. W. Castleman, Jr., J. Aerosol Sci. and Tech., 6, 71-77 (1987).

219. "Thermal Energy Charge Transfer Reactions of Ar+ and Ar2+," R. J. Shul, B. L. Upschulte, R. Passarella, R. G. Keesee, and A. W. Castleman, Jr., J. Phys. Chem., 91, 2556-62 (1987).

220. "Thermal Energy Reactions Involving Ar+ Monomer and Dimer with N2, H2, Xe, and Kr," R. J. Shul, R. Passarella, B. L. Upschulte, R. G. Keesee, and A. W. Castleman, Jr., J. Chem. Phys. 86, 4446-51 (1987).

221. "Evidence of Delayed 'Internal' Ion-Molecule Reactions Following the Multiphoton Ionization of Clusters: Variation in Reaction Channels in Methanol with Degree of Solvation," S. Morgan and A. W. Castleman, Jr., J. Am. Chem. Soc., 109, 2867-70 (1987).

222. "Dynamics of Dissociation, Reactions and Thermochemistry of Cluster Ions," A. W. Castleman, Jr. and R. G. Keesee, Structure/Reactivity and Thermochemistry of Ions, (P. Ausloos and S. G. Lias, Eds.) D. Reidel Publishing Company, pp 185-217 (1987).

223. "Multiphoton Ionization of Studies of Xenon Clusters," O. Echt, M. C. Cook, and A. W. Castleman, Jr., Chem. Phys. Lett. 135, 229-35 (1987).

224. "Considerations of the Rates and Lifetimes of Intermediate Complexes for the Association of Various Ligands to Metal Ions: Ag+ and Cu+," A. W. Castleman, Jr., S. Sigsworth, R. E. Leuchtner, K. G. Weil, and R. G. Keesee, J. Chem. Phys. 86, 3829-35 (1987).

225. "The Association of Ammonia with Halide Ions in the Gas Phase," D. H. Evans, R. G. Keesee, and A. W. Castleman, Jr., J. Chem. Phys. 86, 2927-31 (1987).

226. "Studies of Clusters Using Laser Techniques: Dissociation Processes of Methanol Clusters Following Multiphoton Ionization," S. Morgan, R. G. Keesee and A. W. Castleman, Jr., Proc. 1986 CRDEC Scientific Conference on Obscuration and Aerosol Research, June 23-27, Aberdeen Proving Ground, MD (1987).

227. "Resonance Enhanced Ionization of Clusters: Spectroscopy and Dynamics," A. W. Castleman, Jr., P. D. Dao, S. Morgan and R. G. Keesee, in Resonance Ionization Spectroscopy 1986, Institute of Physics Conference Series, Number 84, pp 209-216 (1987).

228. "Cluster Spectroscopy: Variations in Ionization Potentials and Spectral Shifts as a Function of Degree of Aggregation and Studies of Cluster Fragmentation," A. W. Castleman, Jr. and R. G. Keesee, in Physics and Chemistry of Small Clusters (P. Jena, B. K. Rao and S. N. Khanna, Eds.) NATO ASI Series B: Physics Vol. 158, pp 565-582 (1987).

229. "The Ion-Molecule Reactions of Sulfides and Phosphonates," R. G. Keesee and A. W. Castleman, Jr., Proc. 1986 CRDC Conference on Chemical Defense, Aberdeen Proving Ground, MD, Vol. 2, pp 785-789 (1987).

230. "The Thermodynamics of Mixed Solvent Cluster Ions: K+(CH3OH)n(H2O)m," R. G. Keesee, D. H. Evans, and A. W. Castleman, Jr., in Physics and Chemistry of Small Clusters (P. Jena, B. K. Rao and S. N. Khanna, Eds.) NATO ASI Series B: Physics Vol. 158, pp 687-691 (1987).

231. "Studies of the Energy Dependence of Reactions of Ar+ and Ar2+ with CH4 and CS2," R. J. Shul, R. Passarella, X. L. Yang, R. G. Keesee, and A. W. Castleman, Jr., J. Chem. Phys. 87, 1630-36 (1987).

232. "Krypton Dimers: Resonance-Enhanced MPI via Gerade States in the Region of Atomic 4p55p Configurations," O. Echt, M. C. Cook, and A. W. Castleman, Jr., J. Chem. Phys. 87, 3276-80 (1987).

233. "Gas Phase Reactions of Sulfides, Mercaptans, and Dimethyl Methylphosphonate with Ionic Species Derived from Argon and Water," R. Passarella, R. J. Shul, R. G. Keesee, and A. W. Castleman, Jr., Int. J. Mass Spectrom. Ion Proc. 81, 227-33 (1987).

234. "Monomeric Metaphosphate: Does it Exist in Aqueous Solution?," R. G. Keesee and A. W. Castleman, Jr., Z. Naturforsch. 42b, 1585-87 (1987).

235. "Photodissociation of Rare Gas Cluster Ions: Ar3+," C. R. Albertoni, R. Kuhn, H. W. Sarkas, and A. W. Castleman, Jr., J. Chem. Phys. 87, 5043-44 (1987).

236. "Dissociation Processes of Methanol Clusters Following Multiphoton Ionization," S. Morgan, R. G. Keesee, and A. W. Castleman, Jr., Proc. 35th ASMS Conference on Mass Spectrometry and Allied Topics, May 24-29, Denver, CO, pp 187-188 (1987).

237. "Photodissociation of Rare Gas Cluster Ions: Ar3+," C. R. Albertoni, R. Kuhn, H. W. Sarkas and A. W. Castleman, Jr., in Optical Science and Engineering, Series 9 (A. C. Tam, J. L. Gole, W. C. Stwalley, Eds.) pp 590-592 (1987).

238. "The Energy Dependence of the Reactions of Ar+ and Ar2+ with Methane and Carbon Disulfide," R. J. Shul, R. Passarella, X. L. Yang, R. G. Keesee, and A. W. Castleman, Jr., Proc. 35th ASMS Conference on Mass Spectrometry and Allied Topics, May 24-29, Denver, CO, pp 612-613 (1987).

239. "Clusters: Studies of Aerosol Precursors," W. B. Tzeng, J. Breen, R. G. Keesee, P. D. Dao, S. Morgan and A. W. Castleman, Jr., Proc. 1987 CRDEC Conference on Obscuration and Aerosol Research, Edgewood, MD, June 22-26, 1987.

240. "Production and Stability of Ar3+ and Ar4+," P. Scheier, M. Lezius, T. D. Mark, C. R. Albertoni, R. Kuhn, H. W. Sarkas, R. G. Keesee, Z. Chen and A. W. Castleman, Jr., Proc. 40th Annual Gaseous Electronics Conference, Atlanta, GA, October 13-16, 1987.

241. "Clusters: Ionization, Reactions and Properties," A. W. Castleman, Jr. and R. G. Keesee, in Elemental and Molecular Clusters in Materials Science, (G. Benedik, T. P. Martin, and G. Pocchioni, Eds.) pp 307-328 (1988).

242. "Ion-Molecule Reactions Involving H3O+, H2O+, and OH+ at Thermal Energy," R. J. Shul, R. Passarella, L. T. DiFazio, Jr., R. G. Keesee, and A. W. Castleman, Jr., J. Phys. Chem. 92, 4947-4951 (1988).

243. "The Hydration of Monomeric Metaphosphate," R. G. Keesee and A. W. Castleman, Jr., Proc. 1987 Scientific Conference on Chemical Defense Research, Aberdeen Proving Ground, MD, November 17-20, pp 1221-1226 (1988).

244. "Curvature in the Plots for the Determination of Rate Constants Derived From Fast-Flow Techniques," B. L. Upschulte, R. J. Shul, R. Passarella, R. G. Keesee and A. W. Castleman, Jr., Int. J. Mass Spectrom. Ion Proc. 85, 277-285 (1988).

245. "Gas Phase Clusters: Spanning the States of Matter," A. W. Castleman, Jr. and R. G. Keesee, Science 241, 36-42 (1988).

246. "Application of Advanced Laser and Newly Developed Time-of-Flight Mass Spectrometer Techniques in Detecting Specific Molecules Bound to Aerosol Precursors," A. W. Castleman, Jr. and R. G. Keesee, Proc. 1987 Scientific Conference on Chemical Defense Research, Aberdeen Proving Ground, MD, November 17-20, pp 879-888 (1988).

247. "The Role of Rotational Tunneling in the Metastable Decay of Rare Gas Cluster Ions," E. Ferguson, C. R. Albertoni, R. Kuhn, Z. Y. Chen, R. G. Keesee, and A. W. Castleman, Jr., J. Chem. Phys. 88, 6335-40 (1988).

248. "Appearance Potentials of CnH2n+2N+ Ions," S. W. Sigsworth, R. G. Keesee, and A. W. Castleman, Jr., J. Am. Chem. Soc., 110, 6682-84 (1988).

249. "Multiphoton Ionization of Clusters: Reactions and Spectroscopy," A. W. Castleman, Jr. and R. G. Keesee, in The Structure of Small Molecules and Ions (R. Naaman and Z. Vager, Eds.) Plenum Press, New York, pp 133-145 (1988).

250. "Studies of the Dissociation Products of Methylnitrite and Deuterated Methylnitrite Ions at High Mass Resolution," M. P. Irion, A. Selinger, A. W. Castleman, Jr., E. Ferguson, and K. G. Weil, Chem. Phys. Lett. 147, 33-37 (1988).

251. "Spectroscopy of the Phenylacetylene-Ammonia Cluster System," J. J. Breen, W. B. Tzeng, R. G. Keesee, and A. W. Castleman, Jr., Proc. 1988 CRDEC Obscuration and Aerosol Scientific Conference, June 21-24, 1988, Aberdeen Proving Ground, MD (1988).

252. "Clusters: Elucidating Gas to Particle Conversion Processes," A. W. Castleman, Jr., Env. Sci. Tech. 22, 1265-67 (1988).

253. "Spectroscopy of Phenylacetylene-Carbon Dioxide Clusters," J. Breen, W.-B. Tzeng, R. G. Keesee and A. W. Castleman, Jr., Chem. Phys. Lett., 150, 231 (1988).

254. "The Properties of Organic Compounds in Molecular Clusters," R. G. Keesee and A. W. Castleman, Jr., Aerosol Science and Technology, 10, 352-57 (1989).

255. "Investigation of the Stabilities of Neutral and Ionic Lead and Lead-Antimony Clusters Under Single and Multiphoton Ionization Conditions,," R. W. Farley, P. J. Ziemann, and A. W. Castleman, Jr., Z. Physik D 14, 353-60 (1989).

256. "Intracluster Reactions in Phenylacetylene Ammonia Clusters Initiated Through Resonant Enhanced Ionization," J. Breen, W.-B. Tzeng, R. G. Keesee, and A. W. Castleman, Jr., J. Chem. Phys., 90, 19-24 (1989).

257. "Spectroscopy of Phenylacetylene Bound to Clusters of Ammonia and the Surface Cluster Analogy," J. J. Breen, K. Kilgore, S. Wei, W.-B. Tzeng, R. G. Keesee, and A. W. Castleman, Jr., J. Chem. Phys., 90, 11-18 (1989).

258. "Reactions of Hydrogen Halides with Clusters of Ammonia Molecules," J. Breen, K. Kilgore, S. Wei, W.-B. Tzeng, R. G. Keesee and A. W. Castleman, Jr., J. Phys. Chem. 93, 7703-07 (1989).

259. "Rates of Hydride Abstraction from Amines via Reactions with Ground State Ag+ and Cu+," S. W. Sigsworth and A. W. Castleman, Jr., J. Am. Chem. Soc., 111, 3566-69 (1989).

260. "Reactions of Methanol Clusters Following Multiphoton Ionization," S. Morgan, R. G. Keesee and A. W. Castleman, Jr., J. Am. Chem. Soc., 111, 3841-45 (1989).

261. "Dissociation Dynamics of Methanol Clusters Following Multiphoton Ionization," S. Morgan and A. W. Castleman, Jr., J. Phys. Chem., 93, 4544-50 (1989).

262. "Structure of Solvated Cluster Ions," R. G. Keesee and A. W. Castleman, Jr., in Ion and Cluster Spectroscopy and Structure, (J. Maier, Ed.) Elsevier Science Publishers, pp 275-327 (1989).

263. "Observation of Gas Phase Anionic Bismuth Zintl Ions," R. W. Farley and A. W. Castleman, Jr., J. Am. Chem. Soc. 111, 2734-35 (1989).

264. "The Use of Laser Spectroscopy in Studying the Attachment of Molecules to Finely Dispersed Colloidal Media," W. B. Tzeng, J. J. Breen, K. Kilgore, S. Wei, R. G. Keesee and A. W. Castleman, Jr., Proc. 1988 U.S. Army CRDEC Conference, November 14-18, 1988. Aberdeen Proving Ground, MD (1989).

265. "Consideration of Rotational Tunneling in Rare Gas Cluster Ions," C. R. Albertoni, A. W. Castleman, Jr., and E. E. Ferguson, Chem. Phys. Lett. 157, 159-63 (1989).

266. "Thermodynamics for the Clustering of Ammonia Onto Pb+ in the Gas-Phase," K. L. Gleim, B. C. Guo, R. G. Keesee, and A. W. Castleman, Jr., J. Phys. Chem. 93, 6805-09 (1989).

267. "Thermal Energy Ion-Molecule Association Reactions Involving Sodium Ions," R. Passarella and A. W. Castleman, Jr., J. Phys. Chem. 93, 5840-45 (1989).

268. "Multiphoton Ionization of Acetone Clusters: Metastable Unimolecular Decomposition of Acetone Cluster Ions and the Influence of Solvation on Intracluster Ion-Molecule Reactions," W. B. Tzeng, S. Wei and A. W. Castleman, Jr., J. Am. Chem. Soc. 111, 6035-40 (1989); "Erratum," J. Am. Chem. Soc. 111, 8326 (1989).

269. "Thermochemical Properties of Ion Complexes Na+(M)n in the Gas Phase," B. C. Guo, B. J. Conklin and A. W. Castleman, Jr., J. Am. Chem. Soc. 111, 6506-10 (1989).

270. "The Hydration of Monomeric Metaphosphate Anion in the Gas Phase," R. G. Keesee and A. W. Castleman, Jr., J. Am. Chem. Soc. 111, 9015-18 (1989).

271. "Ar3+ Photodissociation and its Mechanisms," Z. Y. Chen, C. R. Albertoni, M. Hasegawa, R. Kuhn, and A. W. Castleman, Jr., J. Chem. Phys. 91, 4019-25 (1989).

272. "Thermal Metal Cluster Anion Reactions: Behavior of Aluminum Clusters with Oxygen," R. E. Leuchtner, A. C. Harms, and A. W. Castleman, Jr., J. Chem. Phys. 91, 2753-54 (1989).

273. "Large Protonated Water Clusters H+(H2O)n, (n=1-49): The Production and Reactivity of Clathrate-Like Structures Under Thermal Conditions," Xiaolin Yang and A. W. Castleman, Jr., J. Am. Chem. Soc. 111, 6845-46 (1989).

274. "Photophysics of Clusters: Intracluster Reactions and Dynamics of Dissociation Processes," A. W. Castleman, Jr., W. B. Tzeng, S. Wei, and S. Morgan, J. Chem. Soc., Faraday Trans. 86, 2417-26 (1990).

275. "Photoabsorption and Photoionization of Clusters," R. G. Keesee and A. W. Castleman, Jr., in Atomic and Molecular Clusters (E. R. Bernstein, Ed.) Elsevier Science, pp 507-550 (1990).

276. "Particle Formation: Clusters and Nuclei," A. W. Castleman, Jr., J. Cluster Sci. 1, 3-27 (1990).

277. "Metal Cluster Cation Reactions: Carbon Monoxide Association to Cun+ Ions," R. E. Leuchtner, A. C. Harms and A. W. Castleman, Jr., J. Chem. Phys. 92, 6527-37 (1990).

278. "Kinetics and Mechanism Studies of Switching and Association Reactions Involving Na+-Ligand Complexes," Xiaolin Yang and A. W. Castleman, Jr., J. Chem. Phys. 93, 2405-12 (1990).

279. "Kinetic Energy Release Measurements of Ammonia Cluster Ions During Metastable Decomposition and Determination of Cluster Ion Binding Energy," S. Wei, W. B. Tzeng and A. W. Castleman, Jr., J. Chem. Phys. 92, 332-339 (1990).

280. "Protonated Acetaldehyde Clusters: Stability, Structure, and Metastable Unimolecular Decomposition," W. B. Tzeng, S. Wei, and A. W. Castleman, Jr., Chem. Phys. Lett. 168, 30-36 (1990).

281. "The Energy Dependence of the Reaction of N2+ with CS2," R. Passarella, Xiaolin Yang, R. G. Keesee, and A. W. Castleman, Jr., J. Mass Spectrom. Ion Proc. 97, 125-30 (1990).

282. "Reactions of Intermetallic Clusters," R. W. Farley and A. W. Castleman, Jr., J. Chem. Phys. 92, 1790-95 (1990).

283. "Ammonia-Acetone Mixed Clusters: Internal Ion-Molecule Reactions, Structure and Bonding," W. B. Tzeng, S. Wei, D. W. Neyer, R. G. Keesee and A. W. Castleman, Jr., J. Am. Chem. Soc. 112, 4097-4104 (1990).

284. "Influence of Solvation on Dissociation: Metastable Unimolecular Decomposition of Mixed Ammonia-Acetone Cluster Ions," W. B. Tzeng, S. Wei, and A. W. Castleman, Jr., Chem. Phys. Lett. 166, 343-52 (1990).

285. "Photodissociation of Krn+ Clusters," Z. Y. Chen. C. D. Cogley, J. H. Hendricks, B. D. May, and A. W. Castleman, Jr., J. Chem. Phys. 93, 3215-23 (1990).

286. "Ion Dip Spectroscopy of van der Waals Clusters," R. J. Stanley and A. W. Castleman, Jr., J. Chem. Phys. 92, 5770-5775 (1990).

287. "Unimolecular Dissociation Rate Constants: Chlorobenzene Cations Revisited Using a New Method," R. J. Stanley, M. C. Cook, and A. W. Castleman, Jr., J. Phys. Chem. 94, 3668-74 (1990).

288. "Investigation of the Reactivity of Lead and Bismuth Positive Ions," S. W. Sigsworth and A. W. Castleman, Jr.," Chem. Phys. Lett. 168, 314-18 (1990).

289. "The Clustering Reactions of Benzene with Sodium and Lead Ions," B. C. Guo, J. W. Purnell, and A. W. Castleman, Jr., Chem. Phys. Lett. 168, 155-60 (1990).

290. "Studies of Group III Cation Reactions: Consecutive Association of Methanol to Al+, Ga+, and In+," R. E. Leuchtner, R. W. Farley, A. C. Harms, H. Funasaka, and A. W. Castleman, Jr., Int. J. Mass Spectrom. Ion Proc. 102, 199-212 (1990).

291. "Observation of Isomeric Cluster Ions: Influence on the Dynamics of Dissociation of the Ammonia-Triethylamine System," S. Wei, W. B. Tzeng and A. W. Castleman, Jr., J. Phys. Chem. 94, 6927-30 (1990).

292. "Dissociation Dynamics: Measurements of Decay Fractions of Metastable Ammonia Cluster Ions," S. Wei, W. B. Tzeng and A. W. Castleman, Jr., J. Chem. Phys. 93, 2506-12 (1990).

293. "Gas Phase Reactivity of Metal Alloy Clusters," A. C. Harms, R. E. Leuchtner, S. W. Sigsworth and A. W. Castleman, Jr., J. Am. Chem. Soc. 112, 5673-74 (1990).

294. "The Association Reactions of Pb+ Ion with CH3OH and CH3NH2 in the Gas Phase," B. C. Guo and A. W. Castleman, Jr., Int. J. Mass Spectrom. Ion Proc. 100, 665-78 (1990).

295. "General Discussion on Large Gas-Phase Clusters," A. W. Castleman, Jr., J. Chem. Soc. Faraday Trans. 86, 2389, 2452-55, 2495-2522 (1990).