| Numéro |
J. Phys. Colloques
Volume 39, Numéro C6, Août 1978
The XVth International Conference on low temperature physicsQuantum Fluids and Solids Superconductivity |
|
|---|---|---|
| Page(s) | C6-242 - C6-243 | |
| DOI | https://doi.org/10.1051/jphyscol:19786106 | |
The XVth International Conference on low temperature physics
Quantum Fluids and Solids
Superconductivity
J. Phys. Colloques 39 (1978) C6-242-C6-243
DOI: 10.1051/jphyscol:19786106
Physyk-Department E 10, Technische Universität München, 8046 Garching, West-Germany.
Quantum Fluids and Solids
Superconductivity
J. Phys. Colloques 39 (1978) C6-242-C6-243
DOI: 10.1051/jphyscol:19786106
PHONON PULSE REFLECTION FROM FRESHLY CLEAVED INTERFACES BETWEEN SOLIDS AND LIQUID HELIUM
J. Weber, W. Sandmann, W. Dietsche and H. KinderPhysyk-Department E 10, Technische Universität München, 8046 Garching, West-Germany.
Résumé
Les impulsions de phonons à 290 GHz ont été réfléchies des surfaces solides dans l'hélium liquide. Pour la première fois les surfaces ont été clivées (fraiches) à 1K. Il est surprenant d'observer des coefficients de réflection non loin de 100 % pour ces surfaces presque idéales.
Abstract
Phonon pulses of 290 GHz were reflected from solid surfaces in contact with liquid helium. The surfaces were freshly cleaved at 1K, for the first time. Surprisingly, the reflection coefficient was nearly 100 % on these almost ideal surfaces.