Electronic Resource
Springer
Journal of low temperature physics
89 (1992), S. 345-354
ISSN:
1573-7357
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The dynamic structure factor S(Q,E) for liquid4He at saturated vapor pressure has been measured by inelastic neutron scattering for wave vectors Q between 1.9 and 2.8 Å−1. The temperature dependence is studied for Q=2.3 Å−1. The sharp phonon-roton peak gradually disappears with increasing temperature, while the scattering at higher energies is nearly temperature independent. The experimental results are compared with the density-quasiparticle interpretation introduced by Glyde and Griffin, and with a model describing the hybridization with the multiparticle excitations.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00692607
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