Strong correlation and alignment near the Be 1s photoionization threshold.
Strong correlation and alignment near the Be 1s photoionization threshold.
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Be 1s 光电离阈值附近具有强相关性和对准性。
DOI：
10.1103/physrevlett.59.2736
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发表时间：
1987
影响因子：
8.6
通讯作者：
Caldwell Cd
中科院分区：
文献类型：
--
作者：
K. Mo;Caldwell Cd
详细研究了铍原子在1 s阈值附近的光电离。多重激发到1 s（2s 2 p/sup 1，3/P）状态，即，共轭振荡，被发现是异常强大的，40%的单激发。随着光子能量的增加，/sup 3/P分量迅速失去强度，而/sup 1/P分量持续存在。1 s2 s2 p态是高度对齐的，如俄歇电子角分布所示。A/sub 2/值为-0.65意味着d波贡献为0.39。我们的研究结果表明，固态光吸收的共振报告的原子起源。
Photoionization in atomic beryllium has been studied in detail near the 1s threshold. Multiple excitation to the 1s(2s2p /sup 1,3/P) states, i.e., conjugate shakeup, is found to be unusually strong, 40% of single excitation. The /sup 3/P component rapidly loses strength with increasing photon energy, while the /sup 1/P component persists. The 1s2s2p states are highly aligned, as shown by the Auger-electron angular distribution. The A/sub 2/ value of -0.65 implies a d-wave contribution of 0.39. Our results indicate that resonances reported for the solid-state photoabsorption are of atomic origin.