| Autor: |
Danilkin, Mikhail, Kerikmäe, Mihkel, Kirillov, Aleksei, Lust, Aime, Ratas, Arno, Paama, Lilli, Seeman, Viktor |
| Předmět: |
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| Zdroj: |
Proceedings of the Estonian Academy of Sciences, Chemistry; Sep2006, Vol. 55 Issue 3, p123-131, 9p |
| Abstrakt: |
The false-dose effects are investigated in the thermoluminescent detectors of ionizing radiation based on Li2B4O7:Mn,Si. To reveal the mechanism of daylight sensitivity, thermoluminescence, EPR, and luminescence excitation studies and technological experiments were undertaken. A 400 nm light was shown to be most effective to store the dose and to excite the luminescence band near 600 nm. A charge-transfer complex of a casual titanium impurity is supposed to be responsible for daylight false-dose storage. Another mechanism of a false-dose storage is supposed to be caused by a thermally induced stress, which yields a high-temperature thermoluminescence of Li2B4O7:Mn,Si detectors. Increasing the temperature of the sintering of tablets eliminates both false-dose effects. Possible models of energy storage are discussed. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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