Аннотация:
Longitudinal sound wave propagation has been studied in an aerogel-liquid 4He system for various porosities of aerogel. The superfluid transition was identified as the absorption peak, whose magnitude was suppressed by aerogel. The sound velocity was analyzed within a hydrodynamic theory in both normal and superfluid phases. The absorption peak due to phonon–roton interaction around 1 K was not observed even with the most porous aerogel. The low temperature sound velocity and attenuation show that direct collisions of phonons with aerogel strands plays an important role in the acoustic properties.
Образец цитирования:
K. Matsumoto, Y. Matsuyama, D. A. Tayurskii, K. Tajiri, “Porosity dependence of sound propagation in liquid 4He filled aerogel”, Письма в ЖЭТФ, 80:2 (2004), 118–123; JETP Letters, 80:2 (2004), 109–113
Matsumoto K., Ohmori K., Abe S., Kanamori K., Nakanishi K., 26th International Conference on Low Temperature Physics (Lt26), Pts 1-5, Journal of Physics Conference Series, 400, IOP Publishing Ltd, 2012, 012045
Matsumoto K., Tsuboya H., Ohmori K., Abe S., Suzuki H., Tayurskii D.A., 25th International Conference on Low Temperature Physics (Lt25), Part 3 - Quantum Gases Liquids and Solids, Journal of Physics Conference Series, 150, no. 3, 2009
Tayurskii D.A., Badrutdinov A.O., Matsumoto K., 25th International Conference on Low Temperature Physics (Lt25), Part 3 - Quantum Gases Liquids and Solids, Journal of Physics Conference Series, 150, no. 3, 2009
Matsumoto K., Tsuboya H., Yoshino K., Abe S., Tsuji H., Suzuki H., J Phys Soc Japan, 78:3 (2009), 034601
D A Tayurskii, A O Badrutdinov, K Matsumoto, J. Phys.: Conf. Ser., 150:3 (2009), 032109
Matsumoto K., Tsuboya H., Yoshino K., Abe S., Suzuki H., Tayurskii D., Journal of Low Temperature Physics, 148:5–6 (2007), 615–620
Matsumoto K., Yoshino K., Abe S., Suzuki H., Tajiri K., Low Temperature Physics, AIP Conference Proceedings, 850, no. A-B, 2006, 347–348
Kekutia S.E., Chkhaidze N.D., J Stat Mech Theory Exp, 2005, P12008
Matsumoto K., Nishikawa M., Yoshino K., Abe S., Suzuki H., Tayurskii D.A., Tajiri K., Journal of Physics and Chemistry of Solids, 66:8–9 (2005), 1486–1489
Nishikawa M., Yoshino K., Abe S., Suzuki H., Matsumoto K., Tayurskii D.A., Tajiri K., Journal of Physics and Chemistry of Solids, 66:8–9 (2005), 1506–1508