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Anomalous behaviour of negative ions in He II.

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Abstract

When negative ions move through Hell under roton-emission-limited conditions in very weak electric fields: (a) their drift velocity falls below that predicted by the E1/3 law followed accurately for E > 400 V/m; (b) their effective mass apparently rises with decreasing E. The physical origins of these unexpected phenomena are not understood.

Bibliographic note

Proceedings of the 17th International Conference on Low Temperature Physics, Karlsruhe, 15-22 August 1984.