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US 4,059,765 AGranted
Gamma-ray scintillation detector
AssigneeJapan Atomic Energy Research Institute
InventorsHatsumi Tatsuta, Shigeru Kumazawa
Life of this patent
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Abstract
A plurality of independent scintillators are used to measure radiation dose rate. The opening of a light shielding shutter locating the scintillators and a photomultiplier is adjusted to maintain linear proportional relationship between the counting rate and the dose rate.
Claims2
A .gamma.-ray scintillation detector for measuring radiation dose rate comprising:
- a scintillator substratum provided with a plurality of independent scintillators,
- a photomultiplier tube facing the scintillator substratum, and
- a light shielding shutter locating between the scintillator substratum and the photomultiplier, the opening of said shutter through which light passes through being adjustable.
Dependencies are inferred from the claim text.