Measurement of the He ground state lamb shift via the two-photon 11S-21S transition

被引：104
|
作者：
Bergeson, SD [1 ]
Balakrishnan, A
Baldwin, KGH
Lucatorto, TB
Marangos, JP
McIlrath, TJ
O'Brian, TR
Rolston, SL
Sansonetti, CJ
Wen, J
Westbrook, N
Cheng, CH
Eyler, EE
机构：
[1] Natl Inst Stand & Technol, Gaithersburg, MD 20899 USA
[2] Univ Connecticut, Dept Phys, Storrs, CT 06269 USA
来源：
PHYSICAL REVIEW LETTERS | 1998年 / 80卷 / 16期
关键词：
D O I：
10.1103/PhysRevLett.80.3475
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We have extended two-photon Doppler-free spectroscopy to the vacuum ultraviolet spectral region, to accurately measure the He 1 S-1-2 S-1 transition at 120 nm. Our result is 4984872315(48) MHz. This yields a ground state Lamb shift of 41104(48) MHz, in fair agreement with theory and other experiments. This approach has the potential for significantly better accuracy once improvements in the laser and the wavelength metrology are implemented.
引用
收藏
页码：3475 / 3478
页数：4
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