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Proceedings Paper

Radiation damage in single crystal CsI(T1) and polycrystal CsI
Author(s): O. Barnouin
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Paper Abstract

Radiation damage in single crystal CsI(T1) and polycrystal CsI was assessed by measuring the changes in radioluminescent intensity caused by successive neutron and gamma ray pulses from a TRIGA nuclear reactor. The radioluminescent intensity from the single crystal decreases within nine pulses by 30% in the near infrared range (0.7-4.5 µM) and by 25% in the visible range (0.2-1 pm) before staying constant. For the polycrystal CsI, the emission in the visible range decreases by 60% within 6 pulses and then remains constant, whereas no measurable emission is observed in the infrared. Finally, a heating and cooling cycle is shown to repair the damage for both crystals.

Paper Details

Date Published: 1 November 1990
PDF: 8 pages
Proc. SPIE 1438, Laser-Induced Damage in Optical Materials 1989, 14381I (1 November 1990); doi: 10.1117/12.2294463
Show Author Affiliations
O. Barnouin, Univ. of Illinois at Urbana-Champagne (United States)

Published in SPIE Proceedings Vol. 1438:
Laser-Induced Damage in Optical Materials 1989
Harold E. Bennett; Lloyd L. Chase; Arthur H. Guenther; Brian Emerson Newnam; M. J. Soileau, Editor(s)

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