Ionization cross sections of C60 by fast electron impact

被引：24

作者：

Itoh, A ^{[1
]}

Tsuchida, H ^{[1
]}

Miyabe, K ^{[1
]}

Majima, T ^{[1
]}

Imanishi, N ^{[1
]}

机构：

[1] Kyoto Univ, Dept Nucl Engn, Kyoto 6068501, Japan

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 1999年 / 32卷 / 02期

关键词：

D O I：

10.1088/0953-4075/32/2/011

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

By means of a time-of-flight technique, we have measured cross sections for production of C-60(1-3+) and C-58.56(2+) ions from a gas-phase C-60 target bombarded by 0.4-5.0 keV electrons. The results were in fairly good agreement with other data at overlapping energies below 1 keV. Semiclassical calculations of the single-ionization cross sections were also performed up to 10 keV using the Deutsch-Mark formula proposed for the C-60 molecule. A fairly good agreement between the experimental and theoretical cross sections was obtained both in magnitude and in energy dependence. It was found that the double and triple ionization cross sections both decrease monotonically and exhibit no hump structure, indicating that the inner-shell ionization does not play an important role in electron-impact multiple ionization of C-60.

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收藏

页码：277 / 286

页数：10

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