The influence of magnetic-moment relaxation motion on second viscosity in superfluid solutions

TL;DR

This paper investigates how He-3 nuclear magnetization relaxation affects second viscosity in superfluid solutions under oscillating magnetic fields, analyzing different sound wave modes and deriving conditions for viscosity reduction.

Contribution

It introduces new expressions for second viscosity coefficients considering magnetization relaxation and explores conditions for viscosity decrease in superfluid solutions.

Findings

Magnetization relaxation influences second viscosity coefficients.

Expressions for second viscosity are derived for different sound modes.

Conditions for viscosity reduction are identified.

Abstract

The influence of He-3 nuclear magnetization relaxation on the second viscosity in quantum solutions subjected to an external oscillating magnetic field is studied. The cases of first-, second- and forth-sound waves are examined. The expressions for the second viscosity coefficients are derived and the conditions for the viscosity to be decreased are analyzed.