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Quantum desorption of 3He atoms from negative ions in He II.

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Measurements have been made of the rate nu at which negative ions nucleate vortex rings in ultradilute 3He/4He solutions. It is deduced that, in strong electric fields, the average number of bound 3He per ion is controlled by a new type of quantum desorption process; and that nu0 = 10^-3 nu1 = 10^-6 nu2, where nu0, nu1 and nu2 are respectively the rates characteristic of ions with zero, one, or two bound 3He atoms.

Bibliographic note

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