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Photostimulated Luminescence and Thermoluminescence of LSO Scintillators

Visser, R. and Melcher, C. L. and Schweitzer, J. S. and Suzuki, K. and Tombrello, T. A. (1994) Photostimulated Luminescence and Thermoluminescence of LSO Scintillators. IEEE Transactions on Nuclear Science, 41 (4). pp. 689-693. ISSN 0018-9499.

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Photostimulated luminescence (PSL) and thermoluminescence (TL) from five Lu_(2(1-x/)Ce)_(2x)/(SiO_4)O (LSO) crystals with different light outputs is reported. Optical irradiation into the Ce^(3+) absorption bands causes the appearance of a broad absorption band near 280 nn which is ascribed to Ce^(4+). In addition, a tail is observed extending beyond 700 nm. Optical irradiation into this tail (PSL) or heating of the crystal (TL) results in Ce^(3+) emission. It is shown that both PSL and TL are due to the same traps: In addition, an anti-correlation is found between the light output under gamma-ray irradiation and the trap concentration in the crystal. The nature of the recombination centers responsible for the low light output in some crystals is not clear. Annealing experiments suggest that the traps and the recombination centers may be related to oxygen vacancies.

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Visser, R.0000-0003-1775-5461
Additional Information:© 1994 IEEE. We are grateful to R.A. Manente for growing the crystals. R.A. Manente and C.A. Peterson are acknowledged for useful discussions on the subject of this paper.
Issue or Number:4
Record Number:CaltechAUTHORS:20141028-095723906
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Official Citation:Visser, R.; Melcher, C.L.; Schweitzer, J.S.; Suzuki, H.; Tombrello, T.A., "Photostimulated luminescence and thermoluminescence of LSO scintillators," Nuclear Science, IEEE Transactions on , vol.41, no.4, pp.689,693, Aug 1994 doi: 10.1109/23.322789
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:50923
Deposited By: Ruth Sustaita
Deposited On:28 Oct 2014 19:18
Last Modified:09 Mar 2020 13:19

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