Method of, and apparatus for, monitoring radioactivity

Details Method of, and apparatus for, monitoring radioactivity Method of, and apparatus for, monitoring radioactivity

1979-06-22

1981-11-03

Willis, Davis L.

Radiant energy

Automatic/serial detection of similar sources

250361R, 250367, G01T 100, G01T 120

Patent

active

042987962

ABSTRACT:
The radioactivity of discrete areas of radioactive material on a surface region of a support layer is monitored by converting the radioactivity emitted by these areas into light emissions with the use of a suitable scintillant, and scanning the surface region with at least one photodetector in a plurality of discontinuous steps. Each step places the support layer and the or each photodetector in relative positions in which the or each photodetector detects at least a proportion of the light emissions activated by a respective one of the areas of radioactive material over a finite interval of time. A plurality of output signals are therefore produced by the photodetector(s), each of which is proportional to the radioactivity of a respective one of the areas of radioactive material.

REFERENCES:
patent: 3855473 (1974-12-01), Burgess et al.
patent: 3931520 (1976-01-01), Bell et al.
patent: 4005292 (1977-01-01), Oesterlin et al.
patent: 4071761 (1978-01-01), Horrocks

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