Measurements of Energy and Angular Distributions of Secondary Electrons Produced in Electron-Impact Ionization of Helium

1972 ◽  
Vol 5 (2) ◽  
pp. 712-723 ◽  
Author(s):  
W. K. Peterson ◽  
E. C. Beaty ◽  
C. B. Opal
Keyword(s):  
Electron Impact ◽  
Impact Ionization ◽  
Electron Impact Ionization ◽  
Angular Distributions ◽  
Secondary Electrons ◽  
Energy And Angular Distributions

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

2013 ◽  
Vol 2013 ◽  
pp. 1-16 ◽  
Author(s):  
Mevlut Dogan ◽  
Melike Ulu ◽  
Zehra Nur Ozer ◽  
Murat Yavuz ◽  
Gulin Bozkurt
Keyword(s):  
Electron Impact ◽  
Cross Sections ◽  
Differential Cross ◽  
Impact Ionization ◽  
Electron Impact Ionization ◽  
Angular Distributions ◽  
Differential Cross Sections ◽  
Molecular Systems ◽  
Ionization Mechanisms ◽  
Energy And Angular Distributions

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, H2, and CH4targets 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, H2, and CH4, whereas the inelastic DCSs of He were obtained for 21P excitation level for 200 eV impact electron energy.

Energy Distribution of Secondary Electrons in Electron-Impact Ionization of Hydrogen-Like Ions

1991 ◽  
Vol 60 (5) ◽  
pp. 1565-1571 ◽  
Author(s):  
Shinobu Nakazaki ◽  
Masayuki Nakashima ◽  
Hisao Takebe ◽  
Kazuo Takayanagi
Keyword(s):  
Energy Distribution ◽  
Electron Impact ◽  
Impact Ionization ◽  
Electron Impact Ionization ◽  
Secondary Electrons

Doubly differential cross sections for electron impact ionization of atomic hydrogen

1992 ◽  
Vol 70 (12) ◽  
pp. 1309-1311 ◽  
Author(s):  
H. Ray ◽  
A. C. Roy ◽  
U. Werner
Keyword(s):  
Electron Impact ◽  
Cross Sections ◽  
Differential Cross ◽  
Atomic Hydrogen ◽  
Impact Ionization ◽  
Theoretical Calculations ◽  
Electron Impact Ionization ◽  
Differential Cross Sections ◽  
Secondary Electrons ◽  
Primary Electrons

The Glauber approximation is used to calculate doubly differential cross sections (DDC's) for electron impact ionization of atomic hydrogen at incident energies of 100, 150, and 250 eV. The angular dependences of DDC's are presented for the scattered (primary) electrons. The energies of ejected (secondary) electrons were chosen to be 5, 10, and 14 eV. A comparison is made of the present DDC's with the results of other theoretical calculations.

scholarly journals Low-energy electron-impact ionization of helium

1998 ◽  
Vol 57 (5) ◽  
pp. R3161-R3164 ◽  
Author(s):  
Igor Bray ◽  
Dmitry V. Fursa ◽  
J. Röder ◽  
H. Ehrhardt
Keyword(s):  
Electron Impact ◽  
Impact Ionization ◽  
Electron Impact Ionization ◽  
Low Energy ◽  
Energy Electron ◽  
Low Energy Electron
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