DocumentCode
1008689
Title
Absolute light yield measurements on BaF2 crystals and the quantum efficiency of several photomultiplier tubes
Author
Dorenbos, P. ; de Haas, J.T.M. ; Visser, R. ; van Eijk, C.W.E. ; Hollander, R.W.
Author_Institution
Dept. of Appl. Phys., Delft Univ. of Technol., Netherlands
Volume
40
Issue
4
fYear
1993
fDate
8/1/1993 12:00:00 AM
Firstpage
424
Lastpage
430
Abstract
The quantum efficiency curves of five Philips XP2020Q photomultiplier tubes (PMTs), one Hamamatsu R2059 PMT, and a Na-salicylate coated glass window are determined using a calibrated Thorn EMI 9426 PMT as a reference. The QE of XP2020Q PMTs at wavelengths smaller than 230 nm appears much better than the values specified by the manufacturer. Consequently, the often reported photon yield of 2000 photons/MeV for the fast component of the scintillation pulses from pure BaF2 crystals determined with this tube is overestimated. The authors´ results, obtained by means of calibrated equipment and using 662-keV γ-rays, yield a value of 1400 photons/MeV
Keywords
barium compounds; photoluminescence; photomultipliers; scintillation; scintillation counters; γ-rays; 230 nm; 662 keV; BaF2 crystals; Hamamatsu R2059; Na-salicylate coated glass window; Philips XP2020Q photomultiplier tubes; absolute light yield; photon yield; quantum efficiency curves; Crystalline materials; Glass; Manufacturing; Optical coupling; Optical materials; Photodiodes; Photomultipliers; Photonic crystals; Physics; Windows;
fLanguage
English
Journal_Title
Nuclear Science, IEEE Transactions on
Publisher
ieee
ISSN
0018-9499
Type
jour
DOI
10.1109/23.256593
Filename
256593
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