PHYSICS OF THE SOLID STATE. Technical Report No. 2
Technical Report
·
OSTI ID:4210164
Potassium chloride and potassium bromide crystals were exposed to x rays at 10 deg K. The optical absorption produced by this irradiation and the changes in optical absorption produced by subsequent annealing at higher temperatures were measured. The temperatures at which changes in optical absorption occurred were correlated with the temperatures at which free electrical charge appeared, and thermoluminescence was observed. The absorption band at 345 m mu , in KCl, which has been named the H band, was shown to possess a component caused by selftrapped holes. In KCl, the self-trapped hole band bleaches thermally at 43 deg K with a release of free electrical charge. H centers disappear at 56 deg K with a release of free charge. The optical absorption band of the H center was shown to have its maximum at 335 m mu . In KBr, the thermal release of free change at 30 deg K is attributed to the disappearance of H centers. No charge burst was observed in KBr which may be attributed to the destruction of self- trapped holes. (auth)
- Research Organization:
- Illinois. Univ., Urbana
- NSA Number:
- NSA-14-003857
- OSTI ID:
- 4210164
- Report Number(s):
- NP-8091
- Country of Publication:
- United States
- Language:
- English
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