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Wheatley, J.C. Sarwinski, Raymond Joseph 2011-05-31T16:38:51Z 2011-05-31T16:38:51Z 10000-01-01 1966 The spin-diffusion coefficient and magnetic susceptibility of dilute solutions of He3 in He4 has been measured down to about 3moK. These measurements were made on two solutions of nominal concentrations of 1.3 and 5.0% He3 in He4 under their own vapor pressures. The values of the diffusion coefficient fit T*-2 laws below about 10moK for the 1.3% and below about 30mQK for the 5.0% solutions in agreement with the Landau model of a Fermi liquid. The susceptibility is found to be constant at sufficiently low temperatures also in agreement with the Landau model. Dilute solutions of He3 in He4 are found to behave as weakly interacting Fermi systems with the advantage that the concentration, and therefore the Fermi temperature, can be varied from 0 to about 6% He3• Sirlce the system is weakly interacting, perturbation theory can be applied and the effective interaction potential between He3 particles can be deduced from measurements of the properties of these solutions at different concentrations. Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-05-31T16:38:51Z No. of bitstreams: 1 1966_sarwinski.pdf: 3768859 bytes, checksum: 81a4f91ed68bd96ab4216f34d75bdc9e (MD5) Made available in DSpace on 2011-05-31T16:38:51Z (GMT). No. of bitstreams: 1 1966_sarwinski.pdf: 3768859 bytes, checksum: 81a4f91ed68bd96ab4216f34d75bdc9e (MD5) Previous issue date: 1966 Restriction data tranferred 2014-07-01T11:14:02-05:00 Original Data Group with Access UIUC Users [automated] Release Date: none Reason: Thesis Item marked as restricted to the 'UIUC Users [automated]' Group (id=2) by Carolyn Mead (cmead2@illinois.edu) on 2011-05-31T16:38:51Z Item is restricted indefinitely. Thesis U of I Only 2008369 http://hdl.handle.net/2142/25071 en 1966 Raymond Joseph Sarwinski magnetic properties of dilute solutions liquid helium spin-diffusion coefficient magnetic susceptibility Magnetic properties of dilute solutions of liquid He³ in He⁴ at low temperatures Dissertation / Thesis text Physics Physics University of Illinois at Urbana-Champaign Dissertation Ph.D.