Unitary scintillation detector and system

Details Unitary scintillation detector and system Unitary scintillation detector and system

1991-10-22

1994-05-31

Fields, Carolyn E.

Radiant energy

Invisible radiant energy responsive electric signalling

With or including a luminophor

250369, 2504861, G01T 120

Patent

active

053171586

ABSTRACT:
The invention is a unitary alpha, beta, and gamma scintillation detector and system for sensing the presence of alpha, beta, and gamma radiations selectively or simultaneously. The scintillators are mounted in a light-tight housing provided with an entrance window for admitting alpha, beta, and gamma radiation and excluding ambient light from the housing. Light pulses from each scintillator have different decay constants that are converted by a photosensitive device into corresponding differently shaped electrical pulses. A pulse discrimination system identifies the electrical pulses by their respective pulse shapes which are determined by decay time. The identified electrical pulses are counted in separate channel analyzers to indicate the respective levels of sensed alpha, beta, and gamma radiations.

REFERENCES:
patent: 2910592 (1959-10-01), Armistead
patent: 3032659 (1962-05-01), Bacon et al.
patent: 3988586 (1976-10-01), Stuart et al.
patent: 5006713 (1991-04-01), Miller
patent: 5149971 (1992-09-01), McElhaney et al.
M. M. Chiles, M. L. Bauer and S. A. McElhaney; "Multi-Energy Neutron Detector for Counting Thermal Neutrons, and Gamma Photons Separately"; Presented Oct. 25, 1989, IEEE/Nucl. Sci Sym., San Francisco.
S. A. McElhaney, J. A. Ramsey, M. L. Bauer, and M. M. Chiles; "A Ruggidized ZnS(Ag)Epoxy Alpha Scintillation Detector"; Presented May 21-24, 1990, 7th Sym. on Rad. Meas. & Appl., U. of Michigan, Ann Arbor.

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