Background-subtract adjustment for plutonium continuous alpha air monitors using /sup 252/Cf
Technical Report
·
OSTI ID:5653576
We investigated a method to make optimum adjustments to the electronic background-subtract circuit of a continuous air monitor (CAM) by using a californium source instead of a background air sample. We observed spectra of detected alpha particles emitted by radon-thoron daughters and a californium source on a multichannel analyzer connected to a CAM to determine their effect on the behavior of the subtract circuit. The californium source alpha energy spectrum simulates the spectra of /sup 218/Po and /sup 212/Bi, the radon-thoron daughters most likely to cause spurious CAM alarms. This simulation was the basis for deriving an empirical method using californium to adjust the background-subtract circuit.
- Research Organization:
- Los Alamos National Lab., NM (USA)
- DOE Contract Number:
- W-7405-ENG-36
- OSTI ID:
- 5653576
- Report Number(s):
- LA-9642; ON: DE84002287
- Country of Publication:
- United States
- Language:
- English
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·
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Related Subjects
440101* -- Radiation Instrumentation-- General Detectors or Monitors & Radiometric Instruments
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
500300 -- Environment
Atmospheric-- Radioactive Materials Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ACTINIDES
ALPHA DECAY RADIOISOTOPES
ALPHA DETECTION
CALIBRATION
CALIFORNIUM 252
CALIFORNIUM ISOTOPES
CHARGED PARTICLE DETECTION
DAUGHTER PRODUCTS
DETECTION
ELEMENTS
EVEN-EVEN NUCLEI
FLUIDS
GASES
HEAVY NUCLEI
ISOTOPES
MEASURING INSTRUMENTS
METALS
MONITORS
NONMETALS
NUCLEI
PLUTONIUM
RADIATION DETECTION
RADIATION MONITORS
RADIOISOTOPES
RADON
RARE GASES
TRANSURANIUM ELEMENTS
YEARS LIVING RADIOISOTOPES
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
500300 -- Environment
Atmospheric-- Radioactive Materials Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ACTINIDES
ALPHA DECAY RADIOISOTOPES
ALPHA DETECTION
CALIBRATION
CALIFORNIUM 252
CALIFORNIUM ISOTOPES
CHARGED PARTICLE DETECTION
DAUGHTER PRODUCTS
DETECTION
ELEMENTS
EVEN-EVEN NUCLEI
FLUIDS
GASES
HEAVY NUCLEI
ISOTOPES
MEASURING INSTRUMENTS
METALS
MONITORS
NONMETALS
NUCLEI
PLUTONIUM
RADIATION DETECTION
RADIATION MONITORS
RADIOISOTOPES
RADON
RARE GASES
TRANSURANIUM ELEMENTS
YEARS LIVING RADIOISOTOPES