Ionization and fragmentation of fullerene ions by electron impact

被引：0
|
作者：
Hathiramani, D [1 ]
Scheier, P
Arnold, W
Huber, K
Salzborn, E
机构：
[1] Univ Giessen, Inst Kernphys, D-35392 Giessen, Germany
[2] Univ Innsbruck, Inst Ionenphys, A-6020 Innsbruck, Austria
来源：
PHYSICA SCRIPTA | 2001年 / T92卷
关键词：
D O I：
10.1238/Physica.Topical.092a00153
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Absolute cross sections for the electron-impact multiple ionization and fragmentation of negatively charged fullerene ions C(n)(-) (n = 60, 70, 84) --> C(n-m)(q+) (q = 1, 2, 3 and m = 0, 2, 4) have been measured for electron energies up to 1 keV A scaling law has been observed for the magnitude of the ionization cross sections. Furthermore, the multiple ionization of a fullerene anion is found to be a sequential process. A novel ionization mechanism is proposed which can be expected to be valid also for other negatively charged molecular or cluster ions.
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页码：153 / 155
页数：3
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