Photoionization and electron-impact ionization of Ar{sup 5+}
Journal Article
·
· Physical Review. A
- Department of Physics, MS 220, University of Nevada, Reno, Nevada 89557-0058 (United States)
Absolute cross sections for photoionization and electron-impact ionization of Ar{sup 5+} have been measured using two different interacting-beams setups. The spectra consist of measurements of the yield of products due to single ionization as a function of electron or photon energy. In addition, absolute photoionization and electron-impact ionization cross sections were measured to normalize the measured Ar{sup 6+} product-ion yield spectra. In the energy range from 90 to 111 eV, both electron-impact ionization and photoionization of Ar{sup 5+} are dominated by indirect 3s subshell excitation-autoionization. In the energy range from 270 to 285 eV, resonances due to 2p-3d excitation-autoionization are prominent in the photoionization spectrum. In the range from 225 to 335 eV, an enhancement due to 2p-nl (n>2) excitations are evident in the electron-impact ionization cross section. The electron and photon impact data show some features due to excitation of the same intermediate autoionizing states.
- OSTI ID:
- 20991147
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 75; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
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