Accession Number : AD0608395

Title :   THE EFFECTS OF ELECTRIC FIELDS ON THE FLOW OF LIQUID HELIUM.

Descriptive Note : Research rept.,

Corporate Author : STEVENS INST OF TECH HOBOKEN N J

Personal Author(s) : Neidhardt,W. Jim ; Fajans,Jack

Report Date : MAY 1962

Pagination or Media Count : 146

Abstract : An investigation was made of the effect of electric fields on the flow of liquid helium in a narrow channel superleak whose exit was maintained at a pressure far below the vapor pressure of the liquid. Liquid helium evaporation in the channel and the resulting liquid-gas interface caused an electric pressure gradient. It was found that electric fields of magnitude 3,000,000 volts/cm did not destroy the superfluidity exhibited in the channel. The effect of the applied electric field was to increase flow above and below the lamboa point. Below the lamboa point, both the normal and the superfluid flows were increased by the applied field. At very high applied field the flow attained a limiting value which was a function of temperature.

Descriptors :   (*HELIUM, CRYOGENICS), (*LIQUEFIED GASES, FLUID DYNAMICS), ELECTRIC FIELDS, HYDRODYNAMICS, DIELECTRIC PROPERTIES, FILMS, BOUNDARY LAYER, PHASE STUDIES

Distribution Statement : APPROVED FOR PUBLIC RELEASE