Resonance-induced deviations of β from 2.0 for rare gas s-subshell photoionization
Resonance-induced deviations of β from 2.0 for rare gas s-subshell photoionization
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DOI：
10.1088/0953-4075/39/21/l01
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发表时间：
2006-11
期刊：
影响因子：
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通讯作者：
S. Whitfield;R. Wehlitz;H. R. Varma;T. Banerjee;P. Deshmukh;Steven T. Manson
中科院分区：
文献类型：
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作者：
S. Whitfield;R. Wehlitz;H. R. Varma;T. Banerjee;P. Deshmukh;Steven T. Manson
We investigate the case of resonance-induced deviations of the angular distribution anisotropy parameter, β, from its nominal value of 2.0 for the Kr 4s-subshell at the 3d → mp(m ⩾ 5) excitations and the Xe 5s-subshell in the region of the 4d → mp(m ⩾ 6) excitations. We observe small but unmistakable variations of β from 2.0 at these resonances. In the case of Kr the largest deviation from 2.0 is a mere −0.030(6), β4s = 1.970(6), while in Xe it is definitively larger at −0.080(6), β5s = 1.920(6). To understand these results in more detail, we have carried out relativistic random phase and relativistic multi-channel quantum defect calculations. Our theoretical results clearly indicate deviations of β from 2.0 for these photolines in these resonance regions, although the degree of variation is predicted to be larger than what is observed.
