TY - JOUR
T1 - On the Destabilization of Metastable Solid 4He
AU - Souris, F.
AU - Qu, A.
AU - Dupont-Roc, J.
AU - Grucker, J.
AU - Jacquier, Ph
N1 - Publisher Copyright:
© 2014, Springer Science+Business Media New York.
PY - 2015/6/1
Y1 - 2015/6/1
N2 - Recently, a metastable state of solid 4He 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.
AB - Recently, a metastable state of solid 4He 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.
KW - Experimental localization in time
KW - Metastable solid helium-4
KW - Unexpected instability
UR - https://www.scopus.com/pages/publications/84929061383
U2 - 10.1007/s10909-013-1037-9
DO - 10.1007/s10909-013-1037-9
M3 - 文章
AN - SCOPUS:84929061383
SN - 0022-2291
VL - 179
SP - 390
EP - 395
JO - Journal of Low Temperature Physics
JF - Journal of Low Temperature Physics
IS - 5-6
ER -