Effect of light flash on photocathodes

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We have measured the discharge of the bi-alkali (high resistivity) photocathode of the 2 inch diameter Hamamatsu photomultiplier type R1828-01 when its surface is uniformly illuminated with 5 x 10(8) photons. The gain of the tube (when operated at - 1800 V) is reduced by 7% immediately after the flash, and recovers with a time constant of about 50 mu s. Time delays are also affected, Photomultipliers with multi-alkali (low resistivity) photocathodes do not show these effects.
Publisher
ELSEVIER SCIENCE BV
Issue Date
1997-07
Language
English
Article Type
Article
Citation

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, v.394, no.1-2, pp.7 - 12

ISSN
0168-9002
DOI
10.1016/S0168-9002(96)00925-4
URI
http://hdl.handle.net/10203/256163
Appears in Collection
PH-Journal Papers(저널논문)
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