
Accession Number : ADA190924
Title : Contributions of Autoionizing Resonances to the Electron Collisional Excitation Rates for BeLike Ions,
Corporate Author : MINISTERE DES ARMEES SAINTCLOUD (FRANCE) DIRECTION TECHNIQUES DES ARMEMENTS TERRESTRES
Personal Author(s) : Chen, Mau H ; Crasemann, Bernd
PDF Url : ADA190924
Report Date : 22 Sep 1987
Pagination or Media Count : 28
Abstract : The contributions of autoionizing resonances to the electronimpact excitationrate coefficients for the n = 2 to n = 2 transitions in Belike ions have been evaluated for six ions with atomic numbers Z = 30, 34, 36, 42, 47, and 54. The calculations were carried out in the isolatedresonance approximation. Interference between direct and resonance channels was neglected. The detailed Auger and radiative rates were computed using the multiconfiguration DiracFock model. Results for 45 transitions among 10 states from '1s2 2l 2l' configurations are listed. For electric dipole allowed transitions, the contributions from the autoionizing resonance are quite small. However, the autoionizing resonances can enhance the excitation rates by a factor of 24 dipole forbidden transitions.
Descriptors : *ELECTRON IMPACT SPECTRA, *AUGER ELECTRON SPECTROSCOPY, ATOMIC PROPERTIES, CHANNELS, COLLISIONS, ELECTRONS, EXCITATION, IONIZATION, IONS, MASS NUMBER, RADIATION, RATES, RESONANCE, BERYLLIUM, ELECTRON TRANSITIONS
Subject Categories : Atomic and Molecular Physics and Spectroscopy
Distribution Statement : APPROVED FOR PUBLIC RELEASE