High-resolution velocity-map-imaging photoelectron spectroscopy of the O- photodetachment fine-structure transitions

被引:85
作者
Cavanagh, S. J. [1 ]
Gibson, S. T. [1 ]
Gale, M. N. [1 ]
Dedman, C. J. [1 ]
Roberts, E. H. [1 ]
Lewis, B. R. [1 ]
机构
[1] Australian Natl Univ, Res Sch Phys Sci & Engn, Canberra, ACT 0200, Australia
来源
PHYSICAL REVIEW A | 2007年 / 76卷 / 05期
关键词
D O I
10.1103/PhysRevA.76.052708
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
A high-resolution photoelectron velocity-map-imaging study is reported for the photodetachment of the atomic oxygen anion at 532 nm, where five of the six possible spin-orbit fine-structure transitions have been resolved. A resolution of Delta E/E=0.38% was achieved. Within the experimental uncertainty, each of the fine-structure transitions has the same anisotropy, the averaged beta=-0.89(1) consistent with previous, fine-structure-unresolved, experimental and theoretical determinations.
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页数:9
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