Observation of vibration-dependent electron anisotropy in O-2(-) photodetachment

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Author list: Mabbs R, Mbaiwa F, Wei J, Van Duzor M, Gibson ST, Cavanagh SJ, Lewis BR

Publisher: American Physical Society

Place: COLLEGE PK

Publication year: 2010

Journal: Physical Review A (1050-2947)

Journal acronym: PHYS REV A

Volume number: 82

Issue number: 1

Number of pages: 4

ISSN: 1050-2947

eISSN: 1094-1622

Languages: English-Great Britain (EN-GB)

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Abstract

Photoelectron angular distributions (PADs) recorded for the O-2(X-3 Sigma(-)(g)) <- O-2(-) (X-2 Pi(g)) band show significant vibrational dependence. Experimental evidence of vibrational influence on the PAD has, to date, been sparse. Consequently, little attention has been paid to vibrational effects in the consideration of direct detachment processes by recent theoretical treatments. The results presented here demonstrate the sensitivity of the PAD to vibronic coupling in the anion ground electronic state, a phenomenon which is usually neglected in direct molecular anion photodetachment. These results provide the essential data for the evaluation and refinement of existing theoretical models.

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