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Heat flush and mobility of electric charges in liquid helium

II. — Turbulent flow

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Il Nuovo Cimento (1955-1965)

Summary

The effect of a counterflow of normal and superfluids in liquid helium II on a beam of ions across a wide channel is studied. When a critical value of the heat current is reached a beam of negative ions is strongly affected. This is ascribed to turbulence in the superfluid component and to a strong interaction between the negative ions and the vorticity as vortex lines. The positive ions are instead almost unaffected. The different behaviour of the two types of ions is discussed in terms of their structures.

Riassunto

È stato studiato l’effetto di un controflusso di fluido normale e di superfluido in elio liquido II su un fasico di ioni in un canale largo. Quando si raggiunge un valore critico della corrente di calore un fascio di ioni negativi ne è fortemente affetto. Questo è imputato a turbolenza nel superfluido e ad una forte interazione tra ioni negativi e linee vorticali. Gli ioni positivi risentono molto meno il cambiamento di regime. Si discute il diverso comportamento dei due tipi di ioni in termini della loro struttura.

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References

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Careri, G., Scaramuzzi, F. & Thomson, J.O. Heat flush and mobility of electric charges in liquid helium. Nuovo Cim 18, 957–966 (1960). https://doi.org/10.1007/BF02733036

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  • DOI: https://doi.org/10.1007/BF02733036

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