Viscosity and ultrasonic attenuation in ⁴He below 0.6 K

• Published in: Физика низких температур
• Date: 1997
• Main Authors: Chung-ln Um, Soo-Young Lee, George, T.F., Pandey, L.N., Adamenko, I.N.
• Format: Article
• Language: English
• Published: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 1997
• Subjects: Квантовые жидкости и квантовые кpисталлы
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/175461
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Viscosity and ultrasonic attenuation in ⁴He below 0.6 K / Chung-In Um, Soo-Young Lee, Sahng-Kyoon Yoo, T.F. George, L.N. Pandey and I.N. Adamenko // Физика низких температур. — 1997. — Т. 23, № 5-6. — С. 537-545. — Бібліогр.: 15 назв. — англ.

Through a treatment of three-phonon processes, the wide-angle scattering rates and the absorption rates of phonons, which characterize viscosity and ultrasonic attenuation, respectively, are calculated for ⁴He below 0.6 K. These rates are obtained from the collision matrix which is constructed appro...