On the suprathermal distribution in an anisotropic phonon system in He II

dc.contributor.author	Adamenko, I.N.
dc.contributor.author	Nemchenko, K.E.
dc.contributor.author	G.Wyatt, A.F.
dc.date.accessioned	2018-01-13T19:49:20Z
dc.date.available	2018-01-13T19:49:20Z
dc.date.issued	2003
dc.identifier.citation	On the suprathermal distribution in an anisotropic phonon system in He II / I.N. Adamenko, K.E. Nemchenko, A.F. G. Wyatt // Физика низких температур. — 2003. — Т. 29, № 1. — С. 16-21. — Бібліогр.: 28 назв. — англ.	uk_UA
dc.identifier.issn	0132-6414
dc.identifier.other	PACS: 67.40.Db, 67.40.Fd
dc.identifier.uri	http://dspace.nbuv.gov.ua/handle/123456789/128779
dc.description.abstract	The equation that describes the suprathermal distribution of high-energy phonons (h phonons) created in anisotropic phonon systems in superfluid helium is obtained. The solution of this equation enables the derivation of the value of suprathermal ratio S as the ratio of the actual distribution to the Bose-Einstein one, its dependences on the momentum of the h phonons, the anisotropy parameters, and the temperature of the low-energy phonons from which the h phonons are created. We analyze this equation to obtain an estimate of the value of the ratio between the h-phonon number density in anisotropic and isotropic phonon systems and draw conclusions about the dependence of S on the relevant parameters.	uk_UA
dc.description.sponsorship	We express our gratitude to EPSRC of the UK (grant GR/N18796 and GR/N20225), and to GFFI of Ukraine (grant N02.07/000372) for support for this work.	uk_UA
dc.language.iso	en	uk_UA
dc.publisher	Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України	uk_UA
dc.relation.ispartof	Физика низких температур
dc.subject	Квантовые жидкости и квантовые кpисталлы	uk_UA
dc.title	On the suprathermal distribution in an anisotropic phonon system in He II	uk_UA
dc.type	Article	uk_UA
dc.status	published earlier	uk_UA