Wigner Crystals of 229Th for Optical Excitation of the Nuclear Isomer

被引：118

作者：

Campbell, C. J. ^{[1
]}

Radnaev, A. G. ^{[1
]}

Kuzmich, A. ^{[1
]}

机构：

[1] Georgia Inst Technol, Sch Phys, Atlanta, GA 30332 USA

来源：

PHYSICAL REVIEW LETTERS | 2011年 / 106卷 / 22期

基金：

美国国家科学基金会;

关键词：

HYPERFINE-STRUCTURE; ENERGY; TRANSITION; STATES;

D O I：

10.1103/PhysRevLett.106.223001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have produced laser-cooled Wigner crystals of Th-229(3+) in a linear Paul trap. The magnetic dipole (A) and electric quadrupole (B) hyperfine constants for four low-lying electronic levels and the relative isotope shifts with respect to Th-232(3+) for three low-lying optical transitions are measured. Using the hyperfine B constants in conjunction with prior atomic structure calculations, a new value of the spectroscopic nuclear electric quadrupole moment Q = 3: 11(16) eb is deduced. These results are a step towards optical excitation of the low-lying isomer level in the Th-229 nucleus.

引用

页数：4

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