Photomultiplier used in liquid scintillation counting with speci

Details Photomultiplier used in liquid scintillation counting with speci Photomultiplier used in liquid scintillation counting with speci

1984-10-15

1987-08-18

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

313532, H01J 4014

Patent

active

046879218

ABSTRACT:
A photomultiplier used in liquid scintillation counting has an envelope, a base, an anode, a curved dynode structure and a photocathode. A specimen is inserted in a measuring area of the envelope for liquid scintillation counting. The photocathode has a concave surface, so that the specimen is encircled by the photocathode as completely as possible. The photocathode is positioned at a concave window of the envelope, so that a maximum number of photons directly impinge on the photocathode.

REFERENCES:
patent: 3515872 (1970-06-01), Patzelt et al.
patent: 3924132 (1975-12-01), Koslow
patent: 3944832 (1976-03-01), Kalish
patent: 4341955 (1982-07-01), Mulder et al.

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