BOSE-EINSTEIN CONDENSATION IN A GAS OF SODIUM ATOMS

被引:4847
作者
DAVIS, KB [1 ]
MEWES, MO [1 ]
ANDREWS, MR [1 ]
VANDRUTEN, NJ [1 ]
DURFEE, DS [1 ]
KURN, DM [1 ]
KETTERLE, W [1 ]
机构
[1] MIT, ELECTR RES LAB, CAMBRIDGE, MA 02139 USA
关键词
D O I
10.1103/PhysRevLett.75.3969
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We have observed Bose-Einstein condensation of sodium atoms. The atoms were trapped in a novel trap that employed both magnetic and optical forces. Evaporative cooling increased the phase-space density by 6 orders of magnitude within seven seconds. Condensates contained up to 5 X 10(5) atoms at densities exceeding 10(14) cm(-3). The striking signature of Bose condensation was the sudden appearance of a bimodal velocity distribution below the critical temperature of similar to 2 mu K The distribution consisted of an isotropic thermal distribution and an elliptical core attributed to the expansion of a dense condensate.
引用
收藏
页码:3969 / 3973
页数:5
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