Fano effect in the photoionization cross section of Pb
- Los Alamos National Lab., NM (United States)
We report on pseudo-relativistic calculations of the photoionization cross-section of Pb near the 6s{sup 2}6p {sup 2}p{sub 3/2} threshold. We have studied the interactions between the following configurations: 6p{sub 3/2}nd * 6p{sub 3/2}ns * 6p{sub 1/2}{sup {epsilon}d} and show that the structure observed by Griessmann et al. is accounted for by inclusion of the 6s6p{sup 3} configuration which introduces a Fano minimum in the calculated photoabsorption cross-section between the lowest ionization thresholds. Thus we support the suggestion by Griesmann et al. that the dramatic change in the course of the photoionization cross-section is due to a Fano type interference effect and that the uppermost levels of 6s6p{sup 3} are responsible for it. Progress in the ab initio calculation of autoionization widths and profiles of some of these odd parity J=1 resonances will be reported.
- OSTI ID:
- 281500
- Report Number(s):
- CONF-9305421-; ISSN 0003-0503; TRN: 96:019424
- Journal Information:
- Bulletin of the American Physical Society, Vol. 38, Issue 3; Conference: 1993 American Physical Society annual meeting on atomic, molecular, and topical physics, Reno, NV (United States), 16-19 May 1993; Other Information: PBD: May 1993
- Country of Publication:
- United States
- Language:
- English
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