Radiant energy – Invisible radiant energy responsive electric signalling – Neutron responsive means
Patent
1982-01-25
1984-11-13
Howell, Janice A.
Radiant energy
Invisible radiant energy responsive electric signalling
Neutron responsive means
G01T 306
Patent
active
044828080
ABSTRACT:
An apparatus for measuring neutrons and gamma rays is disclosed in which after pulses generated by neutrons are discriminated from pulses generated by gamma rays, two different counted values are obtained for either the pulses generated by neutrons or the pulses generated by gamma rays to control a discriminating circuit between the pulses by neutrons and the pulses by gamma rays so that a ratio between the different counted values is kept constant, and further two different counted values are obtained for either the pulses by neutrons or the pulses by gamma rays in a manner the same as the above-mentioned to control the output of a detector so that a ratio between the counted values is kept constant.
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B. Machai, "Automatic Gain Control Circuit for Scintillation Probe with Plastic Scintillator", Nuclear Instruments and Methods, vol. 118, No. 1, (1974), pp. 231-235.
P. Sperr, H. Spieler, M. R. Maier and D. Evers, "A Simple Pulse-Shape Discrimination Circuit", Nuclear Instruments and Methods, No. 116, (1974), pp. 55-59.
S. Kinbara and T. Kumahara, "A General Purpose Pulse Shape Discriminating Circuit", Nuclear Instruments and Methods, No. 70, (1969), pp. 173-182.
Horiuchi Shoichi
Sase Yoshihiro
Tominaga Hiroshi
Hannaher Constantine
Hitachi , Ltd.
Howell Janice A.
Japan Atomic Energy Research Institute
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