Electron affinity of Li: A state-selective measurement

被引：78

作者：

Haeffler, G

Hanstorp, D

Kiyan, I

Klinkmuller, AE

Ljungblad, U

Pegg, DJ

机构：

[1] CHALMERS UNIV TECHNOL, S-41296 GOTHENBURG, SWEDEN

[2] UNIV TENNESSEE, DEPT PHYS, KNOXVILLE, TN 37996 USA

[3] RUSSIAN ACAD SCI, INST GEN PHYS, MOSCOW 117942, RUSSIA

来源：

PHYSICAL REVIEW A | 1996年 / 53卷 / 06期

关键词：

D O I：

10.1103/PhysRevA.53.4127

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have investigated the threshold of photodetachment of Li- leading to the formation of the residual Li atom in the 2p(2)P state. The excited residual atom was selectively photoionized via an intermediate Rydberg state and the resulting Li+ ion was detected. A collinear laser-ion beam geometry enabled both high resolution and sensitivity to be attained. We have demonstrated the potential of this state-selective photodetachment spectroscopic method by improving the accuracy of Li electron affinity measurements an order of magnitude. From a fit to the Wigner law in the threshold region, we obtained a Li electron affinity of 0.618 049(20) eV.

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页码：4127 / 4131

页数：5

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