Abstract
The propagation of the third sound in a superfluid 4 He film with wavelength of several ten µm was studied at 0.9 K by the conventional method employing narrow strips of superconducting films as an emitter and detectors. Some anomalous wave-forms which are very much different from those for long wavelength were observed. The resuls are discussed in connection with the recent theory of solitons in a superfluid 4 He film.
| Original language | English |
|---|---|
| Pages (from-to) | 721-722 |
| Number of pages | 2 |
| Journal | Journal of the Physical Society of Japan |
| Volume | 50 |
| Issue number | 3 |
| DOIs | |
| State | Published - Mar 1981 |