APPARATUS FOR THE MEASUREMENT OF MICROACTIVITIES: GAMMA SCINTILLATION COUNTERS (in French)
Journal Article
·
· Bull. Inform. Sci. Tech. (Paris)
OSTI ID:4696740
The construction of scintillation counters of the microactivity type is reduced to a determination of the origin of contamination of the various detector constituents and to as great a reduction as possible in these contaminations so as to obtain the lowest possible self-pulse. The contamination of scintillation counters is discussed with a consideration of the sources of extraneous radiation in the photomultiplier, the NaI(Tl) scintiilator, and the accessories (reflector, scintillator shield, and photomultiplier shield). The selfpulse of four scintillation counters is analyzed in order to make evident the results of the study of the contamination sources. The calculation of the measurement threshold is illustrated. (J.S.R.)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-17-025612
- OSTI ID:
- 4696740
- Journal Information:
- Bull. Inform. Sci. Tech. (Paris), Journal Name: Bull. Inform. Sci. Tech. (Paris) Vol. Vol: No. 67
- Country of Publication:
- Country unknown/Code not available
- Language:
- French
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Related Subjects
CARBON DIOXIDE
CARBON MONOXIDE
CONTAMINATION
DECOMPOSITION
FORMIC ACID
GAMMA DETECTION
HEATING
INSTRUMENTS AND INSTRUMENTATION
MEASURED VALUES
METHANE
OXALATES
PHOTOMULTIPLIERS
QUANTITATIVE ANALYSIS
RADIOACTIVITY
REACTION KINETICS
SALTS
SCANDIUM COMPOUNDS
SCANDIUM OXIDES
SCINTILLATION COUNTERS
SODIUM IODIDES
THALLIUM
VACUUM
WATER
CARBON MONOXIDE
CONTAMINATION
DECOMPOSITION
FORMIC ACID
GAMMA DETECTION
HEATING
INSTRUMENTS AND INSTRUMENTATION
MEASURED VALUES
METHANE
OXALATES
PHOTOMULTIPLIERS
QUANTITATIVE ANALYSIS
RADIOACTIVITY
REACTION KINETICS
SALTS
SCANDIUM COMPOUNDS
SCANDIUM OXIDES
SCINTILLATION COUNTERS
SODIUM IODIDES
THALLIUM
VACUUM
WATER