Observation of quasicondensate in two-dimensional atomic hydrogen

被引：173

作者：

Safonov, AI ^{[1
]}

Vasilyev, SA

Yasnikov, IS

Lukashevich, II

Jaakkola, S

机构：

[1] Univ Turku, Dept Phys, Wihuri Phys Lab, Turku 20014, Finland

[2] Kurchatov Inst, ISSSP, Lab Metastable Quantum Syst, Moscow 123182, Russia

来源：

PHYSICAL REVIEW LETTERS | 1998年 / 81卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.81.4545

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have performed magnetic compression experiments with the two-dimensional gas of hydrogen atoms on liquid (4)He at T = 120-200 mK. For 2D phase-space densities higher than 3, the probability of three-body dipole recombination is observed to decrease gradually by an order of magnitude in comparison to its low-density value K(bbb) = 8.4(3.5) X 10(-25) cm(4) s(-1). This is attributed to local coherence developing in a 2D quasicondensate. We have also determined the value U/k = 5.1(5) X 10(-15) K cm(2) for the mean-field energy of the gas. [S0031-9007(98)07787-4].

引用

页码：4545 / 4548

页数：4

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