| Numéro |
J. Phys. Colloques
Volume 42, Numéro C6, Décembre 1981
International Conference on Phonon Physics
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|---|---|---|
| Page(s) | C6-78 - C6-80 | |
| DOI | https://doi.org/10.1051/jphyscol:1981624 | |
International Conference on Phonon Physics
J. Phys. Colloques 42 (1981) C6-78-C6-80
DOI: 10.1051/jphyscol:1981624
1 Service Basses Températures, C.E.N.G., 85X, 38041 Grenoble Cedex, France
2 Lab. Vaste Stof- en Hoge Drukfysika, K.U. Leuven, Celestiynenlaan 200D, 3030 Leuven, Belgium
J. Phys. Colloques 42 (1981) C6-78-C6-80
DOI: 10.1051/jphyscol:1981624
THERMAL PHONON TRANSPORT STUDY OF THE DEFECTS CREATED IN QUARTZ SINGLE CRYSTALS BY DIFFERENT IRRADIATIONS (γ RAYS, ELECTRONS, NEUTRONS)
A.M. de Goër1, M. Locatelli1 et C. Laermans21 Service Basses Températures, C.E.N.G., 85X, 38041 Grenoble Cedex, France
2 Lab. Vaste Stof- en Hoge Drukfysika, K.U. Leuven, Celestiynenlaan 200D, 3030 Leuven, Belgium
Abstract
Thermal conductivity measurements have been carried out between 80 mK and 30 K in quartz after γ, electron and neutron irradiation at different doses. All the samples were natural quartz of the same origin, in order to rule out the effects of different sample state. Electron and neutrons cause an additional phonon scattering which, below 1K, can be explained by the presence of tunneling states similar as in amorphous solids but which is very different above IK, indicating the different origin of the glassy "plateau". γ-irradiation does not induce a detectable number of tunneling states.