The accumulation of natural radionuclides on aerosol particles and precipitation elements in the atmospher (in German)
The attachment of Rn- and Tn-decay-products to the atmospheric aerosol is discussed, taking into account diffusion and electrostatic forces. The computed size distribution of the produced radioactive aerosol agrees with the results of diffusion measurements. The activation of cloud and rain droplets with short-lived decay products is chiefly due to the diffusion of fresh, carrier- free RaA-atoms. The collection efficiency of falling rain droplets for RaA and ThB was measured in model experiments; it is small compared to the activation of cloud elements. A method for the continuous measurement of RaB- and RaC-activity during rainfall is described: the measured, mean specific activity of 3 x 10-5 mu c/cm3 can be explained by the theory of activation processes.
- Research Organization:
- Hahn-Meitner-Institut fur Kernforschung, Berlin
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-16-033288
- OSTI ID:
- 4765760
- Journal Information:
- Pure and Applied Geophysics, Journal Name: Pure and Applied Geophysics Journal Issue: 1 Vol. 50; ISSN 0033-4553
- Country of Publication:
- Country unknown/Code not available
- Language:
- German
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