Title :
A study of the optical and radiation damage properties of lead tungstate crystals
Author :
Woody, C.L. ; Kierstead, J.A. ; toll, S. P S ; Zhu, R.Y. ; Ma, D.A. ; Newman, H.B.
Author_Institution :
Brookhaven Nat. Lab., Upton, NY, USA
fDate :
6/1/1996 12:00:00 AM
Abstract :
A study has been made of the optical and radiation damage properties of undoped and niobium doped lead tungstate crystals. Data were obtained on the optical absorbance, the intensity and decay time of the scintillation light output, and the radioluminescence and photoluminescence emission spectra. Radiation damage was studied in several undoped and niobium doped samples using 60Co gamma ray irradiation. The change in optical absorption and observed scintillation light output was measured as a function of dose up to total cumulative doses on the order of 800 krad. The radiation induced phosphorescence and thermoluminescence was also measured, as well as recovery from damage by optical bleaching and thermal annealing. An investigation was also made to determine trace element impurities in several samples
Keywords :
annealing; gamma-ray effects; lead compounds; niobium; optical saturable absorption; solid scintillation detectors; 60Co gamma ray irradiation; PbWO4; PbWO4:Nb; lead tungstate crystals; optical bleaching; optical properties; photoluminescence; radiation damage properties; radioluminescence; recovery; scintillation light output; thermal annealing; trace element impurities; Collision mitigation; Contracts; Crystals; Electromagnetic wave absorption; Magnetic materials; Niobium; Optical scattering; Photoluminescence; Stimulated emission; Wavelength measurement;
Journal_Title :
Nuclear Science, IEEE Transactions on
