Induced nuclear reactions: processes – systems – and elements – Testing – sensing – measuring – or detecting a fission reactor... – Fuel assay
Patent
1982-05-13
1985-02-05
Cangialosi, Sal
Induced nuclear reactions: processes, systems, and elements
Testing, sensing, measuring, or detecting a fission reactor...
Fuel assay
250362, 250391, G21C 1700, G01T 122
Patent
active
044977697
ABSTRACT:
A portable instrument for measuring induced Cerenkov radiation associated with irradiated nuclear fuel assemblies in a water-filled storage pond is disclosed. The instrument includes a photomultiplier tube and an image intensifier which are operable in parallel and simultaneously by means of a field lens assembly and an associated beam splitter. The image intensifier permits an operator to aim and focus the apparatus on a submerged fuel assembly. Once the instrument is aimed and focused, an illumination reading can be obtained with the photomultiplier tube. The instrument includes a lens cap with a carbon-14/phosphor light source for calibrating the apparatus in the field.
REFERENCES:
patent: 4389568 (1983-06-01), Dowdy
Nucl. Instr. Meth. 173, No. 2 (1980), pp. 251-257, S04700062, Nemethyl et al., "Water Cherenkov Neutrino Detector."
Dowdy Edward J.
Holt David M.
Nicholson Nicholas
Stump, Jr. Charles J.
Cangialosi Sal
Eklund William A.
Gaetjens Paul D.
The United States of America as represented by the United States
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