STABLE, TIGHTLY CONFINING MAGNETIC TRAP FOR EVAPORATIVE COOLING OF NEUTRAL ATOMS

被引:420
作者
PETRICH, W
ANDERSON, MH
ENSHER, JR
CORNELL, EA
机构
[1] NATL INST STAND & TECHNOL,JOINT INST LAB ASTROPHYS,BOULDER,CO 80309
[2] UNIV COLORADO,DEPT PHYS,BOULDER,CO 80309
关键词
D O I
10.1103/PhysRevLett.74.3352
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We describe a new type of magnetic trap whose time-averaged, orbiting potential (TOP) supplies tight and harmonic confinement of atoms. The TOP trap allows for long storage times even for cold atom samples by suppressing the loss due to nonadiabatic spin flips which limits the storage time in an ordinary magnetic quadrupole trap. In preliminary experiments on evaporative cooling of 87Rb atoms in the TOP trap, we obtain a phase-space density enhancement of up to 3 orders of magnitude and temperatures as low as 200 nK. © 1995 The American Physical Society.
引用
收藏
页码:3352 / 3355
页数:4
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