Kinetics for evaporative cooling of a trapped gas

被引：18

作者：

BergSorensen, K ^{[1
]}

机构：

[1] ROWLAND INST SCI INC, CAMBRIDGE, MA 02142 USA

来源：

PHYSICAL REVIEW A | 1997年 / 55卷 / 02期

关键词：

D O I：

10.1103/PhysRevA.55.1281

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We discuss the kinetic theory for evaporative cooling of a dilute collisional gas in a trap. The analysis in O.J. Luiten et al, Phys. Rev. A 53, 381 (1996) is extended to incorporate a time-dependent trap strength and truncation energy. We employ the equations obtained to predict the efficiency of evaporative cooling of sodium atoms in a Ioffe trap and realize that a time-dependent trap strength can be crucial for the cooling. The calculations are classical in the sense that no effects of quantum statistics are taken into account: nevertheless the results of the calculations are useful in order to reveal experimental routes towards a Bose-Einstein condensate of sodium atoms.

引用

页码：1281 / 1287

页数：7

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