Title :
Scintillation losses due to radiation damage in long-size CsI(Tl) crystals
Author :
Gektin, A.V. ; Globus, M.E. ; Shepelev, O.A. ; Shiran, N.V. ; Shpilinskaya, L.N.
Author_Institution :
Inst. for Single Crystals, Kharkov, Ukraine
Abstract :
Basing on both experimental and calculated data, the radiation-stimulated losses of scintillation efficiency in long-size CsI(Tl) crystals are shown to be caused by at least two physical mechanisms. There are the transparency decrease in irradiated crystals on the emission wavelength and a decrease of the luminescence efficiency due to coincidence of hole color centers absorption bands with the luminescence excitation spectrum of CsI(Tl). Therewith, the latter mechanism is turned out to be prevailing one
Keywords :
caesium compounds; colour centres; radiation effects; solid scintillation detectors; thallium; CsI:Tl; emission wavelength; hole color centers absorption bands; long-size CsI(Tl) crystals; luminescence efficiency; luminescence excitation spectrum; radiation damage; radiation-stimulated losses; scintillation efficiency; scintillation losses; transparency decrease; Charge carrier processes; Crystalline materials; Crystals; Electromagnetic radiation; Electromagnetic wave absorption; Luminescence; Radiation detectors; Solid scintillation detectors; Stability; Testing;
Conference_Titel :
Nuclear Science Symposium, 1996. Conference Record., 1996 IEEE
Print_ISBN :
0-7803-3534-1
DOI :
10.1109/NSSMIC.1996.591482
