THE LAMBDA-TRANSITION OF HE-4 IN A HEAT CURRENT AND UNDER GRAVITY

被引：12

作者：

LIU, FC ^{[1
]}

AHLERS, G ^{[1
]}

机构：

[1] UNIV CALIF SANTA BARBARA,CTR NONLINEAR SCI,SANTA BARBARA,CA 93106

来源：

PHYSICA B | 1994年 / 194卷

关键词：

D O I：

10.1016/0921-4526(94)90628-9

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We searched experimentally for hysteresis at the lambda-transition of He-4 in a heat current and in the gravitational field, and found none. With the temperature controlled by a thermometer with 3 nK (rms) resolution, the transition was crossed from below and above at ramp rates from 1.14 to 10.42nK/s in the presence of heat currents from 13.76 to 37.00muW/cm2. In all cases, the hysteresis was less than 0.1muK. This is an order of magnitude less than the theoretical estimates of 1.6 or 3.1muK.

引用

页码：597 / 598

页数：2

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