Determination of the 133Cs and proton mass ratio using highly charged ions

被引：46

作者：

Carlberg, C

Fritioff, T

Bergström, I

机构：

[1] Stockholm Univ, Dept Phys, S-10405 Stockholm, Sweden

[2] Manne Siegbahn Lab, S-10405 Stockholm, Sweden

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 83卷 / 22期

关键词：

D O I：

10.1103/PhysRevLett.83.4506

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The ratio of the Cs-133 and proton mass has been determined by comparing the cyclotron frequencies of highly charged (about 40+) Cs,Cs-12(4+), and H-2(+) ions in a Penning trap. This ratio is determined to 131.91535591(24)(15), which is a tenfold improvement in accuracy over the previously determined value. This result may be used to improve the knowledge of the line structure constant alpha, in a way which does not require detailed QED calculations.

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页码：4506 / 4509

页数：4

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