Measurement of the 7p P-2(3/2) level lifetime in atomic francium

被引：35
|
作者：
Zhao, WZ [1 ]
Simsarian, JE [1 ]
Orozco, LA [1 ]
Shi, W [1 ]
Sprouse, GD [1 ]
机构：
[1] FUDAN UNIV,SHANGHAI 200433,PEOPLES R CHINA
来源：
PHYSICAL REVIEW LETTERS | 1997年 / 78卷 / 22期
关键词：
D O I：
10.1103/PhysRevLett.78.4169
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We present the first measurement of an atomic radiative lifetime in Fr. We use a time-correlated single photon counting technique with a cold sample of Fr-210 atoms in a magneto-optic trap. The results are a precision experimental test of the atomic many-body perturbation theory applied to the heaviest alkali. The lifetime for the 7p(2)P(3/2) level of 21.02(16) ns gives a value for the reduced transition matrix element between the levels 7s(2)S(1/2) --> 7p(2)P(3/2) of 5.898(22)a(infinity) atomic units.
引用
收藏
页码：4169 / 4172
页数：4
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