Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5396979 | Journal of Electron Spectroscopy and Related Phenomena | 2007 | 10 Pages |
Abstract
The high-resolution absolute photoionization cross sections for Ar, Kr, Xe and N2 in the inner-shell ionization region have been measured using a multi-electrode ion chamber and monochromatized synchrotron radiation. The energy ranges of the incident photons for the target gases were as follows: Ar: 242-252Â eV (2p Rydberg excitation), Kr: 1650-1770Â eV (near the 2p ionization thresholds), Xe: 665-720Â eV (near the 3d ionization thresholds) and 880-1010Â eV (near the 3p ionization thresholds), N2: 400-425Â eV (N 1s excitation and ionization). It is the first time to measure the absolute ionization cross sections of Ar, Kr, Xe and N2 over the present energy ranges with the energy resolution of over 10,000. The natural lifetime widths of 2p3/2â14s, 2p3/2â13d, 2p3/2â14d and 2p1/2â14s resonances for Ar, 3d5/2â16p resonance for Xe, and 1sâ1Ïg*(vâ²=0) resonance for N2 have been obtained based on the cross sections determined. The ionization energies into the Ar+ (2p3/2â1), Ar+ (2p1/2â1) and Xe+ (3d5/2â1) ionic states are also determined using the Rydberg formula.
Related Topics
Physical Sciences and Engineering
Chemistry
Physical and Theoretical Chemistry
Authors
M. Kato, Y. Morishita, M. Oura, H. Yamaoka, Y. Tamenori, K. Okada, T. Matsudo, T. Gejo, I.H. Suzuki, N. Saito,