Accurate measurement of the 2(3)S(1)-3(3)D(1) two-photon transition frequency in helium: New determination of the 2(3)S(1) Lamb shift

被引：58

作者：

Dorrer, C

Nez, F

deBeauvoir, B

Julien, L

Biraben, F

机构：

[1] ECOLE NORMALE SUPER,LAB KASTLER BROSSEL,F-75252 PARIS 05,FRANCE

[2] UNIV PARIS 06,LAB CNRS URA 18,F-75252 PARIS 05,FRANCE

来源：

PHYSICAL REVIEW LETTERS | 1997年 / 78卷 / 19期

关键词：

D O I：

10.1103/PhysRevLett.78.3658

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have performed a precise measurement of the 2(3)S(1)-3(3)D(1) two-photon transition frequency in He-4 at 762 nm. The 2(3)S(1)-3(3)D(1) frequency is 786823850.002(56) MHz, with a relative uncertainty of 7.1 x 10(-11). The deduced 2(3)S(1) Lamb shift is 4057.276(60) MHz. This result, the most accurate at the present time, reduces the uncertainty in the 2(3)S(1) Lamb shift by 1 order of magnitude and is 100 times more precise than the theoretical prediction [4062.3(8.0) MHz].

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页码：3658 / 3661

页数：4

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