COLLISIONAL PROCESSES INVOLVING SIZE-SELECTED SODIUM-CLUSTER IONS

H. Tanaka, T. Mizuno, J. Hirokawa, S. Nonose and T. Kondow
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H. Tanaka: Department of Chemistry, School of Science, University of Tokyo, Bunkyo-ku, Tokyo 113, Japan
T. Mizuno: Department of Chemistry, School of Science, University of Tokyo, Bunkyo-ku, Tokyo 113, Japan
J. Hirokawa: Department of Chemistry, School of Science, University of Tokyo, Bunkyo-ku, Tokyo 113, Japan
S. Nonose: Department of Chemistry, School of Science, University of Tokyo, Bunkyo-ku, Tokyo 113, Japan
T. Kondow: Department of Chemistry, School of Science, University of Tokyo, Bunkyo-ku, Tokyo 113, Japan

Surface Review and Letters (SRL), 1996, vol. 03, issue 01, 679-682

Abstract: Collision-induced reactions of${\rm{Na}}_n^+$(n=2–9)with Ne and Kr were investigated by means of a Tandem mass spectrometer equipped with octapole ion guide. The dominant processes were evaporation of a Na atom from${\rm{Na}}_n^+$with even sizes orNa2molecules from those with odd sizes. The absolute cross section for the reaction was measured as functions of the parent-cluster size and the collision energy. The branching fractions of the daughter-ion production were also determined. These results are interpreted in a scheme of a pair interaction in jellium background.

Date: 1996
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DOI: 10.1142/S0218625X96001224

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