Effect of elevated backgrounds on plastic scintillator based whole body contamination monitors
Conference
·
· IEEE Trans. Nucl. Sci.; (United States)
OSTI ID:6708761
Two types of plastic scintillator contamination monitors were compared by in house and field testing. One monitor uses thick plastic scintillators with a 9 mg/cm/sup 2/ window and is sensitive to both beta and gamma radiations. The second uses a thin plastic scintillator with a 1.3 mg/cm/sup 2/ window and is sensitive to mainly beta radiation. The effects discussed include degradation of RDA with increased count rate and the variation in individual detector sensitivities and false alarm rates due to the shielding and scattering effects of the person using the monitor. The effectiveness of methods such as shielding the detectors and modifying the software to include corrections for scattering and self-shielding are highlighted.
- Research Organization:
- National Nuclear Corp., 1904 Colony Street, Mountain View, CA 94043
- OSTI ID:
- 6708761
- Report Number(s):
- CONF-861007-
- Conference Information:
- Journal Name: IEEE Trans. Nucl. Sci.; (United States) Journal Volume: NS-34:1
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
440102* -- Radiation Instrumentation-- Radiation Dosemeters
440200 -- Radiation Effects on Instrument Components
Instruments
or Electronic Systems
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BACKGROUND RADIATION
BENCH-SCALE EXPERIMENTS
BETA PARTICLES
BIOLOGICAL EFFECTS
BIOLOGICAL RADIATION EFFECTS
BUILDUP
CHARGED PARTICLES
COMPUTER CODES
CORRECTIONS
COUNTING RATES
DOSES
FIELD TESTS
MEASURING INSTRUMENTS
PHOSPHORS
PHYSICAL RADIATION EFFECTS
PLASTIC SCINTILLATION DETECTORS
PLASTIC SCINTILLATORS
RADIATION DETECTORS
RADIATION DOSES
RADIATION EFFECTS
RADIATIONS
RADIOSENSITIVITY
SCATTERING
SCINTILLATION COUNTERS
SHIELDING
SOLID SCINTILLATION DETECTORS
TESTING
WHOLE-BODY COUNTERS
440200 -- Radiation Effects on Instrument Components
Instruments
or Electronic Systems
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BACKGROUND RADIATION
BENCH-SCALE EXPERIMENTS
BETA PARTICLES
BIOLOGICAL EFFECTS
BIOLOGICAL RADIATION EFFECTS
BUILDUP
CHARGED PARTICLES
COMPUTER CODES
CORRECTIONS
COUNTING RATES
DOSES
FIELD TESTS
MEASURING INSTRUMENTS
PHOSPHORS
PHYSICAL RADIATION EFFECTS
PLASTIC SCINTILLATION DETECTORS
PLASTIC SCINTILLATORS
RADIATION DETECTORS
RADIATION DOSES
RADIATION EFFECTS
RADIATIONS
RADIOSENSITIVITY
SCATTERING
SCINTILLATION COUNTERS
SHIELDING
SOLID SCINTILLATION DETECTORS
TESTING
WHOLE-BODY COUNTERS