Surface effects in magnetic microtraps -: art. no. 041604

被引：114

作者：

Fortágh, J ^{[1
]}

Ott, H ^{[1
]}

Kraft, S ^{[1
]}

Günther, A ^{[1
]}

Zimmermann, C ^{[1
]}

机构：

[1] Univ Tubingen, Inst Phys, D-72076 Tubingen, Germany

来源：

PHYSICAL REVIEW A | 2002年 / 66卷 / 04期

关键词：

D O I：

10.1103/PhysRevA.66.041604

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have investigated Bose-Einstein condensates and ultracold atoms in the vicinity of a surface of a magnetic microtrap. The atoms are prepared along copper conductors at distances to the surface between 300 mum and 20 mum. In this range, the lifetime decreases from 20 s to 0.7 s showing a linear dependence on the distance to the surface. The atoms manifest a weak thermal coupling to the surface, with measured heating rates remaining below 500 nK/s. In addition, we observe a periodic fragmentation of the condensate and thermal clouds when the surface is approached.

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页数：4

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