ELECTRON-AFFINITY OF HELIUM (1S2S)-S-3

被引：51

作者：

BUNGE, AV ^{[1
]}

BUNGE, CF ^{[1
]}

机构：

[1] UNIV NACL AUTONOMA MEXICO,INST FIS,MEXICO CITY 20,MEXICO

来源：

PHYSICAL REVIEW A | 1979年 / 19卷 / 02期

关键词：

D O I：

10.1103/PhysRevA.19.452

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A configuration-interaction calculation with a carefully optimized orbital basis gives an upper bound Eu=-2.178040 a.u. (He) for the nonrelativistic energy Enr of the (1s2s2p)P04 metastable state of the He negative ion. Extensive studies of patterns of convergence for the energy show that Enr=-2.178074(10), which together with Pekeris' accurate Enr He (1s2s)S3 yields a nonrelativistic electron affinity Anr=77.4(3) meV. It is argued that the true electron affinity should not differ from Anr by more than 0.2 meV. Good agreement with the less-precise experimental values is obtained. The present results, by allowing a recalibration of the experiments, will permit a significant increase in the accuracy of future experimental determinations of electron affinities below 300 meV. © 1979 The American Physical Society.

引用

页码：452 / 456

页数：5

共 23 条

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