LT2053 - temperature, by considering spin diusion constant...

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Vortex State of 3He-A Studied by NMR Line Width Minoru Kubota a , Yuuki Kataoka a , Minoru Yamashita b , Ken Izumina a , and Osamu Ishikawa c a Institute for Solid State Physics, the University of Tokyo, Kashiwanoha, Kashiwa, 277-8581,JAPAN b Grad School of Phys.Kyoto Univ., Kitashirakawa,Kyoto, Japan c Grad School of Phys.Osaka City Univ., Sugimotocho, Osaka, Japan Vortex state of superFuid 3 He -A under rotation has been studied most commonly by means of torsional oscillator and NMR techniques. Since the earliest NMR experiments, in addition to the appearance of vortex satellite peak, the main NMR line width in the A phase was realized to be broadened under rotation. A unique theoretical work by ±omin and Kamenskii(1982) predicted three di²erent temperature ranges where NMR line width change under rotation to show di²erent dependences on the reduced
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Unformatted text preview: temperature, by considering spin diusion constant change in the vicinity of Tc and spin wave velocity at the lowest temperature range. In between they predicted a plateau of the line width change as a function of the reduced temperature. Experimental work has been reported by Helsinki Group, see for example, Eltsov, and references therein. As is discussed by Eltsov, et. al., the most common vortex in 3 He-A is Continuously Unlocked Vortex, CUV. We report our preliminary NMR line width measurements and discuss the three distinct temperature ranges where we could obtain dierent features under rotation up to 1 rev/sec speed. Sorting category: Ab Quantum gases, Fuids and solids Keywords: superFuidity, 3 He-A, Vortex state, NMR line width LT2053...
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This note was uploaded on 12/15/2011 for the course PHY 2053 taught by Professor Buchler during the Fall '06 term at University of Florida.

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