Observation of (. omega. ,. omega. ) backward-wave phonon echoes in quartz crystals after neutron irradiation, electrodiffusion, and annealing
Journal Article
·
· Phys. Rev. B: Condens. Matter; (United States)
We have studied (..omega..,..omega..) backward-wave phonon echoes at 9.3 GHz in quartz crystals which are induced by neutron irradiation, electrodiffusion in vacuum, and heating in vacuum. It is argued that the backward-wave phonon echoes in the electrodiffused and annealed samples are due to impurity atoms present in the quartz crystal and which undergo a migration by this treatment. In the neutron-irradiated samples experimental evidence is found that there are two mechanisms present for the echo generation: two-level systems and impurity atoms, the latter being displaced by the irradiation.
- Research Organization:
- Laboratorium voor Vaste Stof- en Hoge Drukfysika, Departement Natuurkunde, Katholieke Universiteit Leuven, Celestijnenlaan 200D, B-3030 Leuven, Belgium
- OSTI ID:
- 5219180
- Journal Information:
- Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 37:15; ISSN PRBMD
- Country of Publication:
- United States
- Language:
- English
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