Radiation damage in single crystal CsI(T1) and polycrystal CsI

O. Barnouin

doi:10.1117/12.2294463

1 November 1990 Radiation damage in single crystal CsI(T1) and polycrystal CsI

O. Barnouin

Proceedings Volume 1438, Laser-Induced Damage in Optical Materials 1989; 14381I (1990) https://doi.org/10.1117/12.2294463
Event: Laser-Induced Damage in Optical Materials 1989, 1989, Boulder, CO, United States

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 Ã‚ÂµM) 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.

Citation Download Citation

O. Barnouin "Radiation damage in single crystal CsI(T1) and polycrystal CsI", Proc. SPIE 1438, Laser-Induced Damage in Optical Materials 1989, 14381I (1 November 1990); https://doi.org/10.1117/12.2294463

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