Relativistic model of secondary-electron energy spectra in electron-impact ionization

Journal Article · Tue Oct 01 00:00:00 EDT 1991 · Physical Review A. General Physics; (United States)

DOI:https://doi.org/10.1103/PhysRevA.44.4321· OSTI ID:5102066

Miller, J H ^[1]; Manson, S T ^[2]

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1. Biology and Chemistry Department, Pacific Northwest Laboratory, Richland, Washington (USA)
2. Department of Physics and Astronomy, Georgia State University, Atlanta, Georgia (USA)

A relativistic model for differential electron-impact-ionization cross sections that allows the energy spectrum of secondary electrons to be calculated over a wide range of primary-electron energies is presented. The semiempirical method requires only experimental total ionization cross sections and optical oscillator strengths for the target species of interest, but other information, if available, can be incorporated to make the formulation still more accurate. Results for ionization of helium indicate that the lower limit on primary-electron energy for application of the model is about 100 eV. The simple analytic form of the model facilitates investigation of the regions of the secondary-electron energy spectrum where relativistic effects are important.

• DOE Contract Number: AC06-76RL01830
• OSTI ID: 5102066
• Journal Information: Physical Review A. General Physics; (United States), Vol. 44:7; ISSN 1050-2947
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
ELECTRON-ATOM COLLISIONS
IONIZATION
CALCULATION METHODS
ELECTRON EMISSION
ENERGY SPECTRA
HELIUM
OSCILLATOR STRENGTHS
RELATIVISTIC RANGE
TOTAL CROSS SECTIONS
ATOM COLLISIONS
COLLISIONS
CROSS SECTIONS
ELECTRON COLLISIONS
ELEMENTS
EMISSION
ENERGY RANGE
FLUIDS
GASES
NONMETALS
RARE GASES
SPECTRA
640304* - Atomic
Molecular & Chemical Physics- Collision Phenomena