Cold collision frequency shift of the 1S-2S transition in hydrogen

被引：113

作者：

Killian, TC ^{[1
]}

Fried, DG

Willmann, L

Landhuis, D

Moss, SC

Greytak, TJ

Kleppner, D

机构：

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

[2] MIT, Ctr Mat Sci & Engn, Cambridge, MA 02139 USA

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.81.3807

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have observed the cold collision frequency shift of the 1S-2S transition in trapped spin-polarized atomic hydrogen. We find Delta v(1s-2s) = -3.8 +/- 0.8 x 10(-10)n Hz cm(3), where n is the sample density. From this we derive the 1S-2S s-wave triplet scattering length, a(1s-2s) = -1.4 +/- 0.3 nm, which is in fair agreement with a recent calculation. The shift provides a valuable probe of the distribution of densities in a trapped sample. [S0031-9007(98)07613-3].

引用

页码：3807 / 3810

页数：4

共 23 条

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