| Автор | R A Sherlock |
| Автор | N G Mills |
| Автор | A F G Wyatt |
| Дата выпуска | 1975-02-07 |
| dc.description | For pt.I see ibid., vol.8, 289 (1975). Detailed measurements of the angular distribution of phonons radiated from the cleaved (100) faces of sodium fluoride crystals pulse heated to 0.9K<or approximately=T<sub>1</sub><or approximately=3.2K into <sup>4</sup>He at T approximately 0.1K are presented for the first time. The angular distributions can be resolved into two components, a narrow central peak and a broad background, the shape of the central peak being explicable on a modified acoustic mismatch theory where surface damping in the solid is taken into account. The background component accounts for the majority (>or approximately=85%) of the energy flux across the interface at all source temperatures, and its variation with source temperature T<sub>1</sub> corresponds well to the temperature dependence of the excess Kapitza conductance observed in steady heat flow experiments for a wide variety of materials. This temperature dependence is consistent with a threshold energy for transmission into the background of approximately 5K. |
| Формат | application.pdf |
| Издатель | Institute of Physics Publishing |
| Название | The angular distribution of phonons radiated from a heated solid surface into liquid <sup>4</sup>He. II. Cleaved sodium fluoride (100) faces |
| Тип | paper |
| DOI | 10.1088/0022-3719/8/3/009 |
| Print ISSN | 0022-3719 |
| Журнал | Journal of Physics C: Solid State Physics |
| Том | 8 |
| Первая страница | 300 |
| Последняя страница | 315 |
| Аффилиация | R A Sherlock; Univ. Nottingham, UK |
| Аффилиация | N G Mills; Univ. Nottingham, UK |
| Аффилиация | A F G Wyatt; Univ. Nottingham, UK |
| Выпуск | 3 |
