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U.S. Department of Energy
Office of Scientific and Technical Information

Device for light flux attenuation, especially for additional quenching of scintillations at radionuclide activity determination

Patent ·
OSTI ID:5553290
Apparatus for light flux attenuation particularly for additional quenching of scintillations in the determination of radionuclide activity comprising a body provided with a counting chamber containing a counting vial which is optically coupled with photomultipliers and between which is disposed a cylindrical spring. The opposite ends of the spring are secured in the body and the spring extends in surrounding relation with a rotatable bush mounted in the body. The bush is provided with a ring having a hole through which the cylindrical spring passes such that the ring divides the spring into a first portion surrounding the counting vial and a second portion surrounding the rotatable bush.
Assignee:
Instytut Badan Jadrowych (Poland)
Patent Number(s):
US 4205231
OSTI ID:
5553290
Country of Publication:
United States
Language:
English