Low Temperature Physics: 33, 774 (2007); https://doi.org/10.1063/1.2781503 (6 pages)
Физика Низких Температур: Том 33, Выпуск 9 (Сентябрь 2007), c. 1016-1022    ( к оглавлению , назад )

Charged snowball in nonpolar liquid

I. Chikina

DRECAM/SCM/LIONS CEA-Saclay, 91191 Gif-sur-Yvette Cedex, France

V. Shikin

Institute of Solid State Physics RAS, Chernogolovka, Moscow District, 142432, Russia
E-mail: shikin@issp.ac.ru

A. Varlamov

INFM-CNR, COHERENTIA, via del Politecnico, 1, I-00133 Rome, Italy

Received November 29, 2006


The problem of correct definition of the charge carrier effective mass in superfluid helium is revised. It is demonstrated that the effective mass M of a such quasiparticle can be introduced without use of the Atkins’s idea concerning the solidification of liquid He in the close vicinity of ion. The two-liquid scenario of the «snowball» mass formation is investigated. The normal fluid contribution to the total snowball effective mass, the physical reasons of its singularity and the way of corresponding regularization procedure are discussed. Within of two-liquid model the existence of two different effective snowball radiuses: Rid for superfluid flow component and Rn for the normal one, Rn > Rid is demonstrated. Agreement of the theory with the available experimental data is found.

PACS: 67.40.–w Boson degeneracy and superfluidity of 4He;
PACS: 72.20.Jv Charge carriers: generation, recombination, lifetime, and trapping.

Key words: superfluid helium, two-liquid model, ion–dipole interaction.