Gamma-ray analysis of fallout samples collected in India during October 1958 to March 1960
Technical Report
·
OSTI ID:4833931
Rain water samples collected at Bombay and Srinagar after the cessation of high-yield tests in October 1958 were analyzed to determine the concentrations of Zr/sup 95/ Ce/sup 144/, Ru/sup 106/, and Cs/sup 137/, using a low-level gamma scintillation spectrometer. During the period of highest fall-out in India, i.e., December 1958 to May 1959, the average monthly deposition rate of Cs/sup 137/ was about 2.1 mc/km/sup 2/ at Srinagar. The data were used to estimate the infinity external gamma radiation dose from Zr/sup 95/, Ce/sup 144/, Ru/sup 106/ and Cs/sup 137/. The total dose from these isotopes for the period October 1958 to June 1959 was about 50 mrem. The total dose during the period July 1959 to March 1960 was only 8 mrem. The large dose during the period October 1958 to June 1959 is attributed to shorter residence time of the debris injected in the polar regions during the USSR test series of October, 1958. (auth)
- Research Organization:
- Atomic Energy Establishment, Trombay, Bombay (India)
- NSA Number:
- NSA-15-030951
- OSTI ID:
- 4833931
- Report Number(s):
- AEET/AM--20
- Country of Publication:
- India
- Language:
- English
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