Attenuation measurements in neutron-irradiated quartz after heat treatment at 840ยฐC show a maximum around 10 K. This indicates that the distribution of the parameters 6 and A of the tunneling model changes after annealing. We present a modified model, with a restricted distribution for the parameter
Ultrasonic measurements of the variation of the velocity of sound in electron-irradiated quartz: A quantitative analysis to the tunneling model
โ Scribed by A. Vanelstraete; C. Laermans; V. Keppens
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 318 KB
- Volume
- 165-166
- Category
- Article
- ISSN
- 0921-4526
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model for the Hall effect in graphite is described. Theoretical curves are given for 200 and 300ยฐK relating the Hall coefficient for a single crystal to the number of electrons trapped. The density of electrons (n/cm") trapped in irradiated graphite is deduced from the observed Hall coefficient, and
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