EVAPORATIVE COOLING OF SODIUM ATOMS

被引：236

作者：

DAVIS, KB ^{[1
]}

MEWES, MO ^{[1
]}

JOFFE, MA ^{[1
]}

ANDREWS, MR ^{[1
]}

KETTERLE, W ^{[1
]}

机构：

[1] MIT,ELECTR RES LAB,CAMBRIDGE,MA 02139

来源：

PHYSICAL REVIEW LETTERS | 1995年 / 74卷 / 26期

关键词：

D O I：

10.1103/PhysRevLett.74.5202

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have observed evaporative cooling of magnetically trapped sodium atoms. A novel technique, rf induced evaporation, was used to reduce the temperature by a factor of 12 and increase the phase space density by more than 2 orders of magnitude. The elastic collision cross section of cold sodium atoms in the F=1, mF=-1 hyperfine state was determined to be 6×10-12 cm2, which implies a positive value of the scattering length. © 1995 The American Physical Society.

引用

页码：5202 / 5205

页数：4

共 24 条

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