Binding energy of the metastable He{sup {minus}} ion
Binding energy of the metastable He{sup {minus}} ion
复制标题
亚稳态 He{sup {minus}} 离子的结合能
DOI：
10.1103/physreva.55.978
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发表时间：
1997
影响因子：
2.9
通讯作者：
K. T. Chung
中科院分区：
文献类型：
--
作者：
P. Kristensen;U. Pedersen;V. Petrunin;T. Andersen;K. T. Chung
This paper presents theoretical {ital ab initio} calculations and experimental measurements of the binding energy of the metastable He{sup {minus}}1s2s2p{sup 4}P ion. The calculated 77.518{plus_minus}0.011 meV and the measured 77.516{plus_minus}0.006 meV values for the binding energy are in excellent agreement and they represent a significant improvement in the accuracy compared to previous studies. The experimental technique is based on the determination of the {epsilon}s-wave Wigner threshold associated with detachment to the 1s3s{sup 3}S state of the neutral He atom. The yield of the 1s3s{sup 3}S He level was monitored by applying resonant ionization spectroscopy. {copyright} {ital 1997} {ital The American Physical Society}
This paper presents theoretical {ital ab initio} calculations and experimental measurements of the binding energy of the metastable He{sup {minus}}1s2s2p{sup 4}P ion. The calculated 77.518{plus_minus}0.011 meV and the measured 77.516{plus_minus}0.006 meV values for the binding energy are in excellent agreement and they represent a significant improvement in the accuracy compared to previous studies. The experimental technique is based on the determination of the {epsilon}s-wave Wigner threshold associated with detachment to the 1s3s{sup 3}S state of the neutral He atom. The yield of the 1s3s{sup 3}S He level was monitored by applying resonant ionization spectroscopy. {copyright} {ital 1997} {ital The American Physical Society}