DISSOCIATIVE SCATTERING OF SIZE-SELECTED$({\rm{C}}_6 {\rm{F}}_6)_n^-$(n=1–5) FROM A SILICON SURFACE

T. Tsukuda, H. Yasumatsu, T. Sugai, A. Terasaki, T. Nagata and T. Kondow
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T. Tsukuda: Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan;
H. Yasumatsu: Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan;
T. Sugai: Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan;
A. Terasaki: Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan;
T. Nagata: Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan;
T. Kondow: Department of Chemistry, School of Science, The University of Tokyo, Hongo, Bunkyo-ku, Tokyo 113, Japan;

Surface Review and Letters (SRL), 1996, vol. 03, issue 01, 875-879

Abstract: Scattering processes of a size-selected beam of$({\rm{C}}_6 {\rm{F}}_6)_n^-$(n=1–5)from a silicon surface were investigated using a Tandem time-of-flight (TOF) mass spectrometer. Anionic fragments,F−and${\rm{C}}_6 {\rm{F}}_5^-$, are produced in the collision of$({\rm{C}}_6 {\rm{F}}_6)_n^-$at a collision energy in the range of 0–150 eV. The result leads us to conclude that the anionic core of$({\rm{C}}_6 {\rm{F}}_6)_n^-$is electronically excited upon the surface collision and subsequently dissociates into the fragments. The solvent molecules influence dissociation dynamics of the electronically excited anionic core in low-energy collision.

Date: 1996
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DOI: 10.1142/S0218625X96001571

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