Total and elastic cross-sections of electron and positron scattering from C3H4 molecules (allene and propyne)

被引：35

作者：

Makochekanwa, C

Kawate, H

Sueoka, O

Kimura, M ^{[1
]}

Kitajima, M

Hoshino, M

Tanaka, H

机构：

[1] Yamaguchi Univ, Grad Sch Sci & Engn, Ube, Yamaguchi 7558611, Japan

[2] Sophia Univ, Dept Phys, Tokyo 1028854, Japan

来源：

CHEMICAL PHYSICS LETTERS | 2003年 / 368卷 / 1-2期

基金：

日本学术振兴会;

关键词：

D O I：

10.1016/S0009-2614(02)01823-7

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Total cross-sections (TCSs) for electron and positron scattering from C3H4 isomers (allene and propyne) were measured using the linear transmission method in the range of 0.8-600 eV for electrons and 0.7-600 eV for positrons. Elastic cross-sections for electron scattering were also measured by a crossed-beam experiment in the range of 2-100 eV. Sharp resonance-like peaks were observed in the electron TCSs for propyne around 3.6 and 8 eV, and 2.5 and 11 eV for allene. The positron TCSs for these molecules were found to be smaller and much smoother than the electron TCSs. Clear differences in resonance positions and magnitudes between the two isomers can be viewed as an isomer effect. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：82 / 86

页数：5

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