Negative Ion Mobility in Superfluid 3He Under High Magnetic Field: Proceedings of the Symposium on Quantum Fluids and Solids, QFS2003

Author： Yamaguchi Akira   Tajima Taro   Obara Ken   Ishimoto Hidehiko  

Publisher： Springer Publishing Company

ISSN： 0022-2291

Source： Journal of Low Temperature Physics, Vol.134, Iss.1-2, 2004-01, pp. : 643-648

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Abstract

The negative ion mobility has been measured in superfluid 3He at pressures above 20 bar under high magnetic field up to 14 Tesla. It does not depend on the temperature in the normal phase, followed by a rapid increase below the superfluid transition in both A1 and A2 phase. The isothermal mobility is found to be independent of the magnetic field in the normal and A2 phase, while it decreases with increasing magnetic field in the A1 phase. This field dependence is explained by taking account of the field dependence of the transition temperature (T_{A_1}) between the normal and the A1 phase. Therefore the scattering cross section between, the negative ion and the 3He quasiparticles has no magnetic field dependence both in the superfluid and the normal phase.

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