Title :
Observation of fast scintillation light in a PbF2:Gd crystal
Author :
Woody, C.L. ; Stoll, S.P. ; Kierstead, J.A.
Author_Institution :
Brookhaven Nat. Lab., Upton, NY, USA
fDate :
6/1/1996 12:00:00 AM
Abstract :
A weak scintillation emission has been observed in a lead fluoride crystal doped with 0.15% gadolinium (PbF2:Gd). The scintillation is produced by two emission peaks, one at ~278 nm, and another at ~311 nm, which, when combined with the Cherenkov light produced in the crystal, results in a total light yield of 4-6 photo-electrons per MeV on a bialkali photocathode phototube. This is approximately 3-4 times the intensity of the pure Cherenkov light produced in an undoped lead fluoride crystal. The decay time for the observed light output was found to be ~18 ns with no appreciable slow component. The total light yield of PbF2:Gd is comparable to that of lead tungstate, and, because of the lack of a slow component, could make it attractive for certain high rate applications
Keywords :
gadolinium; lead compounds; solid scintillation detectors; 18 ns; 278 nm; 311 nm; Cherenkov light; PbF2:Gd crystal; bialkali photocathode phototube; decay time; emission peaks; fast scintillation light; high rate applications; total light yield; weak scintillation emission; Cathodes; Electromagnetic scattering; Electromagnetic wave absorption; Electrons; Glass; Laboratories; Lead; Optical materials; Photoelectricity; Testing;
Journal_Title :
Nuclear Science, IEEE Transactions on
