On the influence of a finite relative velocity on first sound propagation in liquid 4He II

被引：0
|
作者：
Adamenko, I. N. [1 ]
Nemchenko, K. E. [1 ]
Slipko, V. A. [1 ]
Wyatt, A. F. G. [2 ]
机构：
[1] Kharkov Natl Univ, UA-61077 Kharkov, Ukraine
[2] Univ Exeter, Sch Phys, Exeter EX4 4QL, Devon, England
来源：
JOURNAL OF MOLECULAR LIQUIDS | 2010年 / 151卷 / 01期
基金：
英国工程与自然科学研究理事会;
关键词：
Superfluid helium; Sound modes; Thermal expansion coefficient; SUPERFLUID;
D O I：
10.1016/j.molliq.2009.11.004
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The system of equations that describes the sound propagation in superfluid helium at arbitrary values of the relative velocity of the normal and superfluid component is obtained. By using the general dispersion relation of this system, we analyze the influence of a finite relative velocity on the first sound velocity. We find that the change in the first sound velocity is determined by the small value of the thermal expansion coefficient. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：60 / 61
页数：2
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