On the Destabilization of Metastable Solid 4He

被引：0

作者：

Souris, F. ^{[1
]}

Qu, A. ^{[2
]}

Dupont-Roc, J. ^{[2
]}

Grucker, J. ^{[2
]}

Jacquier, Ph ^{[2
]}

机构：

[1] Univ Paris Diderot, Univ Paris 06, Ecole Normale Super, CNRS,UMR 8550,Lab Phys Stat, F-75005 Paris, France

[2] Univ Paris 06, Ecole Normale Super, Lab Kastler Brossel, CNRS,UMR 8552, F-75005 Paris, France

来源：

JOURNAL OF LOW TEMPERATURE PHYSICS | 2015年 / 179卷 / 5-6期

关键词：

Metastable solid helium-4; Unexpected instability; Experimental localization in time; HELIUM;

D O I：

10.1007/s10909-013-1037-9

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Recently, a metastable state of solid He has been produced by locally lowering the density of the solid below the melting density using a focused acoustic wave pulse. An unexpected instability of the solid has been found about 4 bar below the melting line. This paper reports on experiments precisely localizing in time the instability birth within the acoustic pulse. It is found that, as expected, the instability always appears during a depression swing of the wave. However a metastability pressure limit does not emerge clearly. Total stress duration seems also to play a role in the instability triggering, suggesting a fatigue effect.

引用

页码：390 / 395

页数：6

共 8 条

[1]

ANDREEV AF, 1969, SOV PHYS JETP-USSR, V29, P1107

[2] X-RAY MEASUREMENTS OF THERMAL VACANCIES IN HCP HE-4 [J].