Hyperfine splitting, isotope shift, and level energy of the 3S states of 6,7Li -: art. no. 043004

被引：65

作者：

Bushaw, BA

Nörtershäuser, W

Ewald, G

Dax, A

Drake, GWF

机构：

[1] Pacific NW Natl Lab, Richland, WA 99352 USA

[2] Gesell Schwerionenforsch mbH, D-64291 Darmstadt, Germany

[3] Univ Windsor, Dept Phys, Windsor, ON N9B 3P4, Canada

来源：

PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 04期

关键词：

D O I：

10.1103/PhysRevLett.91.043004

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We study the 2S-3S transition of Li-6,Li-7 by high-precision laser spectroscopy using two-photon Doppler-free excitation and photoionization detection. Interferometric cross referencing to metrologic Rb 3S-5D two-photon transitions allowed measurement of the transition isotope shift and hyperfine splitting in the 3S state with precision at the 30 kHz level. The results are IS=11 453.734(30) MHz, A(3S)(Li-6)=35.263(15) MHz, and A(3S)(Li-7)=93.106(11) MHz. Combined with recent theoretical work, the isotope shift yields a new value for the change in squared nuclear charge radii DeltaR(2)=0.47(5) fm(2). This is compared with other work and some existing discrepancies are resolved.

引用

页数：4

共 26 条

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