Worldwide dose commitment from radioactive fallout from nuclear tests prior to 1970

Worldwide dose commitment from radioactive fallout from nuclear tests prior to 1970

Table
Worldwide dose commitment from radioactive fallout from nuclear tests prior to 1970*
source isotope half-life due to bone surfaces (mGy)
external radiation short lived
(e.g., iodine-131) 8 days    360
longer lived
(e.g., cesium-137) 30 years    360
internal radiation strontium-89 and -90 50 days 1,310
cesium-137 28 years    210
carbon-14** 5,730 years    160
total 2,400
*North temperate zones; doses calculated for bone surface.
**Calculated to year 2000 only.
See as table:

* * *


Universalium. 2010.

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