SCINTILLATION CHARACTERISTICS OF PBWO4 SINGLE-CRYSTALS AT ROOM-TEMPERATURE

Authors
KOBAYASHI M ISHII M USUKI Y YAHAGI H
Citation
M. Kobayashi et al., SCINTILLATION CHARACTERISTICS OF PBWO4 SINGLE-CRYSTALS AT ROOM-TEMPERATURE, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 333(2-3), 1993, pp. 429-433
Citations number
11
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
333
Issue
2-3
Year of publication
1993
Pages
429 - 433
Database
ISI
SICI code
0168-9002(1993)333:2-3<429:SCOPSA>2.0.ZU;2-M
Abstract
Single crystals of PbWO4 at room temperature show a narrow excitation peak around 325 nm with the FWHM as small as 10 nm and a broad emissio n peak around 420-440 nm. The light output is about 4.4% of that in BG O. The luminescence is fast with the decay constant less than 10 ns fo r 84% and as fast as 40 ns for the rest. Degradation in optical transm ittance due to gamma-ray irradiation is not large up to at least 10(7) rad in the present crystals which are slightly coloured yellow. Spont aneous recovery of the radiation damage occurs to some extent with a t ime constant much shorter than 18 days. The above result indicates a p ossibility that this material may be resistive enough against radiatio n if colourless crystals could be grown.