SOUND ABSORPTION IN LIQUID HELIUM BELOW 0.6-K

被引：17

作者：

WEHNER, RK

KLEIN, R

机构：

[1] Laboratories RCA Ltd., Zürich

来源：

PHYSICAL REVIEW LETTERS | 1969年 / 23卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.23.1372

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The temperature dependence of ultrasonic attenuation in superfluid He4 below 0.6 K is studied. It is shown that vertex corrections in the phonon self-energy improve the agreement with experiment, especially near the transition between the collisionless and collision-dominated regions. The introduction of one average lifetime for the relevant thermal phonons is critically examined. © 1969 The American Physical Society.

引用

页码：1372 / &

共 18 条

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[3] DISPERSION OF PHONONS IN HE4 [J].

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