Second Sound in NaF
Abstract
Propagation of heat pulses in NaF has been studied to higher temperatures in a purer crystal than studied by McNelly et al. At the highest temperatures the second-sound velocity fails to level off at the theoretically predicted limiting value.
- Publication:
-
Physical Review Letters
- Pub Date:
- July 1970
- DOI:
- 10.1103/PhysRevLett.25.26
- Bibcode:
- 1970PhRvL..25...26J