Scintillation Detector for Measuring Unknown $beta$ Emitters Deposited on Large-Surface Filters; DETECTEUR A SCINTILLATION POUR LA DOSIMETRIE D'EMETTEURS BETA INCONNUS DEPOSES SUR FILTRE DE GRANDE SURFACE
Technical Report
·
OSTI ID:4078284
An apparatus is described for direct counting, using a plastic scintillator, of unknown emitters occurring in atmospheric samples collected on large-surface filters (10 cm diameter). The quality of the apparatus depends largely on the uniformity of the photocathode in the photomultiplier used. The counter which was built had a countirg efficiency for a 10 cm diameter source of 30% for S/sup 35/, 88% for P/sup 32/, 45% for unknown emitters and a background noise of 56 cpm. (auth)
- Research Organization:
- France. Commissariat a l'Energie Atomique. Centre d'Etudes Nucleaires, Saclay
- NSA Number:
- NSA-18-014203
- OSTI ID:
- 4078284
- Report Number(s):
- CEA-2356
- Country of Publication:
- France
- Language:
- English
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Related Subjects
ATMOSPHERE
BACKGROUND
CARRIERS
CATHODES
CURIE POINT
CURIE- WEISS LAW
DISTRIBUTION
ELECTRIC CHARGES
ELECTRIC CONDUCTIVITY
ENERGY
FILTERS
GERMANIUM
HYDROGEN
IMPURITIES
INSTRUMENTATION
INTERACTIONS
MAGNESIUM
MATHEMATICS
PERFORMANCE
PHOSPHORS
PHOSPHORUS 32
PHOTOMULTIPLIERS
POLYMERS
RADIOISOTOPES
SAMPLING
SCINTILLATION COUNTERS
SEMICONDUCTORS
SILICON
SULFUR 35
SURFACES
SUSCEPTIBILITY
TEMPERATURE
BACKGROUND
CARRIERS
CATHODES
CURIE POINT
CURIE- WEISS LAW
DISTRIBUTION
ELECTRIC CHARGES
ELECTRIC CONDUCTIVITY
ENERGY
FILTERS
GERMANIUM
HYDROGEN
IMPURITIES
INSTRUMENTATION
INTERACTIONS
MAGNESIUM
MATHEMATICS
PERFORMANCE
PHOSPHORS
PHOSPHORUS 32
PHOTOMULTIPLIERS
POLYMERS
RADIOISOTOPES
SAMPLING
SCINTILLATION COUNTERS
SEMICONDUCTORS
SILICON
SULFUR 35
SURFACES
SUSCEPTIBILITY
TEMPERATURE