OBSERVATION OF RADIOACTIVE AIR-BORNE DUSTS
Journal Article
·
· Ann. Rept. Radiation Center Osaka Prefect
OSTI ID:4829340
Radioactivity measurements on air-borne dusts are reported for the period after the beginning of the Russian nuclear explosions in Sept. 1961. The debris from nuclear explosions was detected by counting the samples 4 and 10 days after sampling. Debris was first detected in Osaka on Sept. 12, and two abnormal activity increases were observed on Oct. 30 and Nov. 7-8. Autoradiographs of air-bonne dusts collected on large filter papers showed that strongly radioactive particles were present and that the dust activities were non- uniform. Autoradiographs of wild arrowroot leaves and a polyvinyl chloride sheet left outdoors are also reported. Gamnta spectrum studies indicated that the nadioactive elements in the dusts are almost the same as those produced in past H- bomb explosions. The decay characteristics of the dust samples of Oct. 30 and Nov. 7-8 indicate that their activities were produced by the explosions of Oct. 23 and 30, respectively. (D.L.C.)
- Research Organization:
- Originating Research Org. not identified
- NSA Number:
- NSA-16-020122
- OSTI ID:
- 4829340
- Journal Information:
- Ann. Rept. Radiation Center Osaka Prefect, Journal Name: Ann. Rept. Radiation Center Osaka Prefect Vol. Vol: 2
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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