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Ultrasonic attenuation near the lambda transition in NH4Cl at high pressures

✍ Scribed by C.W. Garland; D.D. Snyder


Book ID
107812899
Publisher
Elsevier Science
Year
1970
Tongue
English
Weight
474 KB
Volume
31
Category
Article
ISSN
0022-3697

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Anharmonic effects in ultrasonic propaga
✍ H. Kwun; A. Hikata; C. Elbaum πŸ“‚ Article πŸ“… 1980 πŸ› Springer US 🌐 English βš– 324 KB

Anharmonic effects are studied by measuring the temperature dependence of second harmonics of a IO-MHz ultrasonic wave generated near the A transition of pressurized liquid 4He. The anharmonic coupling coefficient C between the fundamental wave and the second harmonic is found to diverge as -[t[-1/t