Improved atomic data for electron-transport predictions by the codes TIGER and TIGERP. I. Inner-shell ionization by electron collision

Technical Report · Sat Jan 01 04:00:00 EST 1983

DOI:https://doi.org/10.2172/5992262· OSTI ID:5992262

Peek, J M; Halbleib, J A

The inner-shell ionization data for electron-target collisions now in use in the TIGER and TIGERP electron-transport codes are extracted and compared with other data for these processes. The TIGER cross sections for K-shell ionization by electron collisions are found to be seriously in error for large-Z targets and incident electron energies greater than 1 MeV. A series of TIGER and TIGERP runs were carried out with and without improved K-shell electron ionization cross section data replacing that now in use. The relative importance of electron-impact and photon ionization of the various subshells was also extracted from these runs. In general, photon ionization dominated in the examples studied so the sensitivity of many predicted properties to errors in the electron-impact subshell ionization data was not large. However, some differences were found and, as all possible applications were not covered in this study, it is recommended that these electron-impact data now in TIGER and TIGERP be replaced. Cross section data for the processes under study are reviewed and those that are most suitable for this application are identified. 19 references, 9 figures, 2 tables.

• Research Organization: Sandia National Labs., Albuquerque, NM (USA)
• DOE Contract Number: AC04-76DP00789
• OSTI ID: 5992262
• Report Number(s): SAND-82-2887; ON: DE84014308
• Country of Publication: United States
• Language: English

Related Subjects

640301* -- Atomic
Molecular & Chemical Physics-- Beams & their Reactions
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BREMSSTRAHLUNG
CHARGED-PARTICLE TRANSPORT
COLLISIONS
CROSS SECTIONS
DATA
ELECTROMAGNETIC RADIATION
ELECTRON COLLISIONS
ELECTRONIC STRUCTURE
ELEMENTS
ENERGY RANGE
ENERGY SPECTRA
EXPERIMENTAL DATA
GOLD
INFORMATION
INNER-SHELL IONIZATION
IONIZATION
K SHELL
METALS
MEV RANGE
NUMERICAL DATA
RADIATION TRANSPORT
RADIATIONS
SPECTRA
SPECTROSCOPY
TANTALUM
TRANSITION ELEMENTS
X-RAY SPECTROSCOPY