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Ion trapping on vortex lines in rotating 3He-4He mixtures

Ion trapping on vortex lines in rotating 3He-4He mixtures The trapping lifetime and mobility of positive and negative ions on vortex lines in 3He-4He mixtures have been measured in the temperature range between 0.1 and 1.3 K. The binding energy of the positive ion is found to be reduced by the 3He, and the mobility of both ion species is lowered, providing evidence that the 3He condenses at the vortex core. The negative ion trapping lifetime is smaller than that of the positive ion in the region 0.3–0.5 K, indicating that the bubble structure may be modified by the presence of the condensed 3He. At 0.3 K the negative ion lifetime increases sharply, in qualitative agreement with theoretical models predicting an increase in the bubble radius at that temperature. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Low Temperature Physics Springer Journals

Ion trapping on vortex lines in rotating 3He-4He mixtures

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References (33)

Publisher
Springer Journals
Copyright
Copyright
Subject
Physics; Condensed Matter Physics; Characterization and Evaluation of Materials; Magnetism, Magnetic Materials
ISSN
0022-2291
eISSN
1573-7357
DOI
10.1007/BF00115570
Publisher site
See Article on Publisher Site

Abstract

The trapping lifetime and mobility of positive and negative ions on vortex lines in 3He-4He mixtures have been measured in the temperature range between 0.1 and 1.3 K. The binding energy of the positive ion is found to be reduced by the 3He, and the mobility of both ion species is lowered, providing evidence that the 3He condenses at the vortex core. The negative ion trapping lifetime is smaller than that of the positive ion in the region 0.3–0.5 K, indicating that the bubble structure may be modified by the presence of the condensed 3He. At 0.3 K the negative ion lifetime increases sharply, in qualitative agreement with theoretical models predicting an increase in the bubble radius at that temperature.

Journal

Journal of Low Temperature PhysicsSpringer Journals

Published: May 14, 2004

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