Amplitude saturation and non-linearity of pulsed third sound on a class substrate

Authors
Wang, S Ketola, KS Lemaire, P Hallock, RB
Citation
S. Wang et al., Amplitude saturation and non-linearity of pulsed third sound on a class substrate, J L TEMP PH, 119(5-6), 2000, pp. 645-675
Citations number
39
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
JOURNAL OF LOW TEMPERATURE PHYSICS
ISSN journal
00222291 → ACNP
Volume
119
Issue
5-6
Year of publication
2000
Pages
645 - 675
Database
ISI
SICI code
0022-2291(200006)119:5-6<645:ASANOP>2.0.ZU;2-7
Abstract
The amplitude of third sound has been measured as a function of the amplitu de and width of a pulsed thermal drive for He-4 film thickness values in th e range 3-20 layers at T = 1.11, 1.35 and 1.50 K. Saturation of the third s ound amplitude and non-linearity were measured for large drive powers. The critical velocity of film flow is estimated from the saturated amplitude.