Upper limit on the magnetic dipole contribution to the 5p-8p transition in Rb by use of ultracold atom spectroscopy

被引:9
作者
Pires, R. [1 ]
Ascoli, M. [1 ]
Eyler, E. E. [1 ]
Gould, P. L. [1 ]
Derevianko, A. [2 ]
机构
[1] Univ Connecticut, Dept Phys, Storrs, CT 06269 USA
[2] Univ Nevada, Dept Phys, Reno, NV 89557 USA
来源
PHYSICAL REVIEW A | 2009年 / 80卷 / 06期
基金
美国国家科学基金会;
关键词
ALKALI-METAL; HYPERFINE-STRUCTURE; MULTIPOLE LINES; INTERFERENCE; AMPLITUDES; E2;
D O I
10.1103/PhysRevA.80.062502
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
We report on hyperfine-resolved spectroscopic measurements of the electric-dipole-forbidden 5p(3/2)-> 8p(1/2) transition in a sample of ultracold Rb-87 atoms. The hyperfine selection rules enable the weak magnetic dipole (M1) contribution to the transition strength to be distinguished from the much stronger electric quadrupole (E2) contribution. An upper limit on the M1 transition strength is determined that is about 50 times smaller than an earlier experimental determination. We also calculate the expected value of the M1 matrix element and find that it is less than the upper limit extracted from the experiment.
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页数:7
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