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Showing 1 to 7 of 7 for “"liquid 4He"”.
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The Longitudinal Momentum Distribution of Solid and Normal Liquid 4He: The Art of Neutron Compton Scattering
Submitted by Jenny Wong-Welch (wongwel2@illinois.edu) on 2011-11-10T18:10:16Z No. of bitstreams: 1 1992_blasdell.pdf: 11979159 bytes, checksum: 7e22939bec7d03aaa140955d4a71ed4b (MD5)
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Measurement of wall relaxation times of polarized 3He in bulk liquid 4He for the Neutron Electric Dipole Moment experiment
… 10-28 e-cm, utilizing spinpolarized 3He in bulk liquid 4He to detect neutron precession in a 10 mG magnetic field and 50 kV/cm electric field. Since depolarized 3He will produce a background, relaxation of the polarized 3He, characterized by the probability of depolarization per bounce, Pd , was …
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Many-body effects in the thermodynamic properites of Fermi liquids and the electron-phonon system and in the excitation spectrum of liquid 4HE
… effects in the thermodynamic properties of Fermi liquids and of the electron-phonon system. Using normal liquid 3He as an example, I show that the T3lnT corrections due to spin fluctuations account for the finite temperature corrections to the leading term in the specific heat. I also calculate …
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The Kapitza resistance at metal-helium interfaces
The Kapitza resistance has been measured between liquid or solid 3He or 4He and surfaces of Mg, Cu, W, and Au in the temperature range 0.03-0.3 K. The experimental data are in relatively good agreement with the acoustic mismatch theory modified so as to include phonon attenuation in the metal. …
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A coincident measurement of the three-body photodisintegration of helium-3
… cryogenic system which maintained the 3He gas at liquid 4He temperature. Protons were detected with a dE-E scintillation telescope and neutrons with a position sensitive scintillation array. The proton energy was determined from the energy deposited in a Nai crystal and the neutron energy from the …
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On the microscopic theory of liquid ⁴He
… the ground state and elementary excitations of liquid 4He is presented. The variational theory is used in conjunction with a perturbative scheme called correlated basis perturbation theory. The hypernetted-chain technique is used to calculate the various matrix elements. First, the ground state …
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Variational theory of quantum fluids
… operator wave function. The method is applied to liquid 3He and the v2-model of nuclear matter. In 3He the correlation operator gives results in much closer agreement with experiment than that with the Jastrow wave function. A new set of hypernetted chain equations are then derived to allow the …