Kinetic energies of fragment ions produced in collisions of 2 MeV Si4+ with C60

被引：0

作者：

Itoh, A. ^{[1
]}

Tsuchida, H. ^{[1
]}

Miyabe, K. ^{[1
]}

Imai, M. ^{[1
]}

Imanishi, N. ^{[1
]}

机构：

[1] Kyoto Univ, Kyoto, Japan

来源：

Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms | 1997年 / 129卷 / 03期

关键词：

Energy transfer - Ion bombardment - Ionization of solids - Molecular dynamics - Silicon;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

The fragmentation of C60 induced by the impacts of 2 MeV Si4+ ions has been studied using time-of-flight techniques. From the peak profile analysis, initial kinetic energies of the fragment ions were obtained. For all the fragment ions investigated the energy distributions peaked at zero kinetic energy, and the total width of the distribution exhibited a strong dependence on the size of fragment ions. For the small fragment ions the kinetic energies decreased monotonously from 6 eV (C+) to 0.85 eV (C12+), while for the multiply ionized parent ions and their daughter ions these values were nearly constant of about 0.04 eV. The results indicate that a large energy transfer from projectiles to C60 takes place during collisions, resulting in high excitation followed by multifragmentation.

引用

页码：363 / 368