Double Differential Cross-Sections for Electron Impact Ionization of Atoms and Molecules

被引：19

作者：

Dogan, Mevlut ^{[1
]}

Ulu, Melike ^{[1
]}

Ozer, Zehra Nur ^{[1
]}

Yavuz, Murat ^{[1
]}

Bozkurt, Gulin ^{[1
]}

机构：

[1] Afyon Kocatepe Univ, Dept Phys, E COL Lab, TR-03200 Afyon, Turkey

来源：

JOURNAL OF SPECTROSCOPY | 2013年 / 2013卷

关键词：

LOW-ENERGY ELECTRONS; ELASTIC-SCATTERING; SECONDARY ELECTRONS; ANGULAR-DISTRIBUTION; EXCITATION-IONIZATION; INELASTIC-SCATTERING; BORN APPROXIMATION; METHANE SCATTERING; RAMSAUER MINIMUM; CH4; MOLECULES;

D O I：

10.1155/2013/192917

中图分类号：

Q5 [生物化学];

学科分类号：

071010 ; 081704 ;

摘要：

The single ionizing collision between an incident electron and an atom/molecule ends up two kinds of outgoing electrons called scattered and ejected electrons. As features of electron impact ionization, these two types of electrons are indistinguishable. Double differential cross-sections (DDCS) can be obtained by measuring the energy and angular distributions of one of the two outgoing electrons with an electron analyzer. We used He, Ar, H-2, and CH4 targets in order to understand the ionization mechanisms of atomic and molecular systems. We measured differential cross-sections (DCS) and double differential cross-sections at 250 eV electron impact energy. The elastic DCSs were measured for He, Ar, H-2, and CH4, whereas the inelastic DCSs of He were obtained for 2(1)P excitation level for 200 eV impact electron energy.

引用

页数：16

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