Low-temperature physics - Condensate forced out of hiding

被引：5
|
作者：
Griffin, A [1 ]
机构：
[1] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada
来源：
NATURE | 1998年 / 391卷 / 6662期
关键词：
D O I：
10.1038/34058
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
The phenomenon of Bose-Einstein condensation has been thought to underlie superfluidity in liquid helium since 1938. Now at last direct evidence for the condensate has been found, by knocking atoms out of the surface of liquid helium using a beam of photons. The atoms all come out at the same angle — a clear sign that they started out with zero momentum parallel to the surface. This experiment is in effect a type of atom laser.
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页码：25 / 26
页数：2
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