Abstract
We report a study of heat pulse propagation in solid 3He as a function of temperature (between .05K and .5K) and molar volume (24.5 cm3/mole to 23.7 cm3/mole). We use the fast heat pulse technique(1) and present data which shows the transition from ballistic flow to second sound. We present evidence for unusual behaviour in the temperature dependence of the velocity and intensity of the slow transverse phonon (propagating close to [110]). The implication of these measurements for specific heat data(2) are discussed.
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References
See for example R J von Gutfeld, in Physical Acoustics, edited by W P Mason (Academic, New York, 1968 ), Vol 5, p 233.
S H Castles and E D Adams, Phys Rev Lett 30, 1125 (1973).
D S Greywall, Phys Rev B11, 1070 (1975).
R Orbach and L A Vredevoe, Physics 1, 91 (1964).
P C Kwok, Physics 3, 221 (1967).
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© 1976 Plenum Press, New York
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Narayanamurti, V., Dynes, R.C. (1976). Ballistic Phonons and the Transition to Second Sound in Solid 3He. In: Challis, L.J., Rampton, V.W., Wyatt, A.F.G. (eds) Phonon Scattering in Solids. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-4271-7_24
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DOI: https://doi.org/10.1007/978-1-4613-4271-7_24
Publisher Name: Springer, Boston, MA
Print ISBN: 978-1-4613-4273-1
Online ISBN: 978-1-4613-4271-7
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