@article{Adamenko_Nemchenko_Wyatt_2002, place={Харків, Україна}, title={On the suprathermal distribution in an anisotropic phonon system in He II}, volume={29}, url={https://fnt.ilt.kharkov.ua/index.php/fnt/article/view/f29-0016e}, DOI={10.1063/1.1542372}, abstractNote={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.}, number={1}, journal={ФІЗИКА НИЗЬКИХ ТЕМПЕРАТУР}, author={Adamenko, I. N. and Nemchenko, K. E. and Wyatt, A. F. G.}, year={2002}, month={Лис}, pages={16–21} }