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

Автор(и)

  • I. N. Adamenko V. N. Karazin Kharkov National University, 4 Svobody Sq., Kharkov 61077, Ukraine
  • K. E. Nemchenko V. N. Karazin Kharkov National University, 4 Svobody Sq., Kharkov 61077, Ukraine
  • A. F. G. Wyatt School of Physics, University of Exeter, Exeter EX4 4QL, UK

DOI (Low Temperature Physics):


https://doi.org/10.1063/1.1542372

Ключові слова:

PACS: 67.40.Db, 67.40.Fd

Анотація

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.

Downloads

Опубліковано

2003-11-29

Як цитувати

(1)
I. N. Adamenko, K. E. Nemchenko, and A. F. G. Wyatt, On the suprathermal distribution in an anisotropic phonon system in He II, Low Temp. Phys. 29, 11–15, (2003) [Fiz. Nizk. Temp. 29, 16-21, (2003)] DOI: https://doi.org/10.1063/1.1542372.

Номер

Том 29 № 1 (2003)

Розділ

Квантові рідини та квантові кристали

Завантаження

Дані завантаження ще не доступні.