Limiting values for radionuclide concentration in the soil from remote spectrometer measurements
Spectrometers that remotely sense ..gamma..-rays in the soil are usually oriented with the normal to a planar surface perpendicular to the air-soil interface. When this is the case, and when the thickness of the detector is not greater than the linear dimensions that determine the aforementioned surface area, simple assumptions can be made to calculate high and low limits for factors that convert from photopeak count rates in the spectrometer to soil concentrations. An H.P. 65 calculator program is developed to calculate these two conversion factors as a function of detector altitude, counting rates from a single measurement with a point calibration source, shielding on the surface of the detector, and depth of activity in the soil. The assumption of an exponential decrease with depth allows the previously reported results of Beck et al to be applied to convert from soil concentration to dose rate at 1 m above the ground.
- Research Organization:
- EG and G, Inc., Las Vegas, NV (USA)
- OSTI ID:
- 5935725
- Report Number(s):
- EGG-1183-1716; TRN: 79-018673
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
RADIATION MONITORS
SENSITIVITY
SOILS
RADIOACTIVITY
AERIAL MONITORING
AIR
AMERICIUM 241
CESIUM 137
COBALT 60
DATA COMPILATION
DOSE RATES
GAMMA SPECTROSCOPY
GRAPHS
INTEGRAL EQUATIONS
INTERFACES
REMOTE SENSING
TABLES
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALKALI METAL ISOTOPES
ALPHA DECAY RADIOISOTOPES
AMERICIUM ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CESIUM ISOTOPES
COBALT ISOTOPES
DATA
DATA FORMS
EQUATIONS
FLUIDS
GASES
HEAVY NUCLEI
INFORMATION
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MEASURING INSTRUMENTS
MINUTES LIVING RADIOISOTOPES
MONITORING
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
ODD-ODD NUCLEI
RADIOISOTOPES
SPECTROSCOPY
YEARS LIVING RADIOISOTOPES
510300* - Environment
Terrestrial- Radioactive Materials Monitoring & Transport- (-1989)