(The determination of sup 222 Rn flux from soils based on sup 210 Pb and sup 226 Ra disequilibrium)
The emanating fraction of radon in soils from the southern part of the United States is about 40% greater than in those from the northern part. The mean {sup 226}Ra activity in the southern soils is also slightly higher and as a consequence the {sup 222}Rn flux derived from the top 50 cm. is greater in the southern samples. We tentatively attribute these observations to the greater degree of weathering associated with the pre-glacial age of the parent material of many of the southern soils. The weathering has concentrated {sup 226}Ra near grain surfaces and results in an increased emanating power for {sup 222}Rn. The estimated correction in {sup 210}Pb analyses described above results in a small decrease in our estimate of the mean loss rate of {sup 222}Rn from the upper 50 cm of soils.
- Research Organization:
- Yale Univ., New Haven, CT (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG02-87ER60576
- OSTI ID:
- 5811774
- Report Number(s):
- DOE/ER/60576-4; ON: DE92006709
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
RADON 222
ENVIRONMENTAL TRANSPORT
RADON 226
RADIOECOLOGICAL CONCENTRATION
SOILS
SAMPLING
GAMMA DETECTION
LEAD 210
PROGRESS REPORT
ALPHA DECAY RADIOISOTOPES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
DAYS LIVING RADIOISOTOPES
DETECTION
DOCUMENT TYPES
ECOLOGICAL CONCENTRATION
EVEN-EVEN NUCLEI
HEAVY NUCLEI
ISOTOPES
LEAD ISOTOPES
MASS TRANSFER
MINUTES LIVING RADIOISOTOPES
NUCLEI
RADIATION DETECTION
RADIOISOTOPES
RADON ISOTOPES
YEARS LIVING RADIOISOTOPES
540211* - Environment
Terrestrial- Basic Studies- Radiometric Techniques- (1990-)