Properties of the ground 3F2 state and the excited 3P0 state of atomic thorium in cold collisions with 3He

被引：2

作者：

Au, Yat Shan ^{[1
,3
]}

Connolly, Colin B. ^{[1
,3
]}

Ketterle, Wolfgang ^{[2
,3
]}

Doyle, John M. ^{[1
,3
]}

机构：

[1] Harvard Univ, Dept Phys, Cambridge, MA 02138 USA

[2] MIT, Dept Phys, Cambridge, MA 02139 USA

[3] Harvard MIT Ctr Ultracold Atoms, Cambridge, MA 02138 USA

来源：

PHYSICAL REVIEW A | 2014年 / 90卷 / 03期

关键词：

D O I：

10.1103/PhysRevA.90.032702

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Inelastic cross sections for collisions between thorium (Th) and helium (He-3) are measured. For Th[F-3(2)]-He-3, we determine the ratio of momentum transfer to Zeeman relaxation cross sections to be gamma similar to 500 at 800 mK. For Th[P-3(0)]-He-3, we find no quenching of this metastable state during 10(6) collisions. We measure the radiative lifetime of Th[P-3(0)] to be tau > 130 ms. The observed stability of Th[P-3(0)] opens up the possibility of trapping this metastable species.

引用

页数：4

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