Precision calculation of fine structure in helium and Li

The fine structure constant α can be extracted from high-precision spectroscopy of the 2^3 P J fine structure splittings in helium and light helium-like ions. In this work, the 2^3 P J fine structure splittings of helium and Li^＋ ion are calculated,including relativistic and QED corrections of order...

Full description

Saved in:
Bibliographic Details
Published inChinese physics B Vol. 24; no. 3; pp. 111 - 117
Main Author 张佩佩 钟振祥 严宗朝 史庭云
Format Journal Article
LanguageEnglish
Published 01.03.2015
Subjects
Constants
Fine structure
Helium
Mathematical analysis
Operators
QED
Spectroscopy
Splitting
氦
物理学
相对论
精细结构常数
计算
锂
高精度
Online AccessGet full text
ISSN1674-1056
2058-3834
1741-4199
DOI10.1088/1674-1056/24/3/033101

Cover

More Information
Summary:The fine structure constant α can be extracted from high-precision spectroscopy of the 2^3 P J fine structure splittings in helium and light helium-like ions. In this work, the 2^3 P J fine structure splittings of helium and Li^＋ ion are calculated,including relativistic and QED corrections of order mα^4, mα^4（m/M）, mα^5, mα^5（m/M）, and Douglas–Kroll operators of mα^6 and mα^6（m/M）, which provide an independent verification for the previous calculations performed by Drake [Can.J. Phys. 80 1195（2002）] and by Pachucki and Yerokhin [Phys. Rev. A 79 062516（2009）; Phys. Rev. Lett. 104 070403（2010）; Can. J. Phys. 89 1139（2011）]. The results of the three groups agree with each other.
Bibliography:The fine structure constant α can be extracted from high-precision spectroscopy of the 2^3 P J fine structure splittings in helium and light helium-like ions. In this work, the 2^3 P J fine structure splittings of helium and Li^＋ ion are calculated,including relativistic and QED corrections of order mα^4, mα^4（m/M）, mα^5, mα^5（m/M）, and Douglas–Kroll operators of mα^6 and mα^6（m/M）, which provide an independent verification for the previous calculations performed by Drake [Can.J. Phys. 80 1195（2002）] and by Pachucki and Yerokhin [Phys. Rev. A 79 062516（2009）; Phys. Rev. Lett. 104 070403（2010）; Can. J. Phys. 89 1139（2011）]. The results of the three groups agree with each other.
Zhang Pei-Pei, Zhong Zhen-Xiang, Yan Zong-Chao, and Shi Ting-Yun（ a）Division of Theoretical and Interdisciplinary Research, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, and Center for Cold Atom Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China; b） University of Chinese Academy of Sciences, Beijing 100049, China;c）Department of Physics, University of New Brunswick, Fredericton, New Brunswick E3B 5A3, Canada
11-5639/O4
fine structure,helium,Li^＋ ion,QED theory
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1674-1056
2058-3834
1741-4199
DOI:10.1088/1674-1056/24/3/033101