Photoionization of the 6s6p {sup 1}P{sub 1} excited state of barium: Comparison with theory in the threshold region

Journal Article · Sat May 01 04:00:00 EDT 1993 · Bulletin of the American Physical Society

OSTI ID:281449

Zhou, H L; Manson, S T; He, L W ^[1]

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1. and others

Using a combination of linear and circular polarizations of the exciting and ionizing lasers, absolute cross sections to each of the final J=0, 1, 2 states for the photoionization of the 6p electron from the 6s6p {sup 1}P, excited state of Ba have been measured. The results show marked disagreement with single particle calculations but good agreement with R-matrix calculations. Thus, it is of interest to identify the crucial additions to the single particle model. MCHF calculations using perturbation theory to include interchannel coupling have been performed. The results show the importance of the 6s6p + 6p5d initial state correlation and the (6s{epsilon}d + 6p{sup 2}) {sup 1}D interchannel coupling.

• OSTI ID: 281449
• Report Number(s): CONF-9305421--
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 3 Vol. 38; ISSN BAPSA6; ISSN 0003-0503
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
BARIUM
CROSS SECTIONS
MONTE CARLO METHOD
PHOTOIONIZATION
PHOTON-ATOM COLLISIONS
R MATRIX