Flow phenomena of superfluid helium through porous-plug phase seoarator.
نویسندگان
چکیده
منابع مشابه
Excitations of superfluid helium in porous media
The elementary excitations of superfluid He, characterised by the phonon-roton dispersion curve, have been studied in great detail over the last forty years since the first observation of the roton in a pioneering neutron-scattering experiment in Stockholm in 1957 [1]. The interest today is turning towards the effect of disorder and confinement on these excitations, when e.g. helium is immersed...
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Institute for Research in Electronics and Applied Physics, University of Maryland, College Park, MD 20742, U.S.A. Department of Physics, University of Maryland, College Park, MD 20742, U.S.A. Institute for Physical Science and Technology, University of Maryland, College Park, MD 20742, U.S.A. International Centre for Theoretical Physics, Trieste 34014, Italy Department of Geology, University of...
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1. EXPERIMENT We-have observed that the critical velocity of the _ flow of superfluid 4He through a submicron aperture exhibits fluctuations which increase with temperature. We have analyzed these fluctuations in order to gain information about the velocity dependence of the probability of occurrence of dissipative phase-slip events. These measurements were made with the same apparatus and duri...
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ژورنال
عنوان ژورنال: TEION KOGAKU (Journal of Cryogenics and Superconductivity Society of Japan)
سال: 1987
ISSN: 0389-2441,1880-0408
DOI: 10.2221/jcsj.22.104