Measurement of the two-loop lamb shift in lithiumlike U89+ -: art. no. 233003

被引：144

作者：

Beiersdorfer, P ^{[1
]}

Chen, H ^{[1
]}

Thorn, DB ^{[1
]}

Träbert, E ^{[1
]}

机构：

[1] Lawrence Livermore Natl Lab, Dept Phys & Adv Technol, Livermore, CA 94550 USA

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 23期

关键词：

D O I：

10.1103/PhysRevLett.95.233003

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Using the SuperEBIT electron beam ion trap, we have measured the 2s(1/2)-2p(1/2) transitions in U88+ and U89+. The measured value of 280.645 +/- 0.015 eV for Li-like U89+ improves the available precision by nearly an order of magnitude and establishes a new benchmark for testing the total QED contribution to the transition energy within a fractional accuracy of 3.6x10(-4). We infer a value for the 2s two-loop Lamb shift in U89+ of -0.23 eV, from which we estimate a value of -1.27 eV for the 1s two-loop Lamb shift in U91+.

引用

页数：4

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