Double pulse phonon injection into liquid4He
โ Scribed by M.A.H. Tucker; A.F.G. Wyatt
- Publisher
- Elsevier Science
- Year
- 1994
- Tongue
- English
- Weight
- 166 KB
- Volume
- 194-196
- Category
- Article
- ISSN
- 0921-4526
No coin nor oath required. For personal study only.
๐ SIMILAR VOLUMES
The system of equations that describes the temporal and spatial evolution of low-energy phonons (l-phonons) is obtained for the cases of plane and axial symmetry. From the solutions of these equations, we discuss the time-resolved measurements of the angular distribution of lphonons. These show a ra
High energy phonons (ttw/k$lOK) and R+ rotons can be injected into liquid 4He by a thin film heater. It is shown that these excitations may interact with the large number of low energy phonons which are also emitted. The conditions for avoiding this are analysed and compared to measurements.