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- W57616681 abstract "A formula is derived theoretically for the atmospheric diffusion of contamination taking into account the correct boundary conditions and half lives. The radioactive gases are characterized by the boundary condition that they are not adsorbed at all on the surface, whereas the aerosols are adsorbed on the ground at least in some degree. The solution of the diffusion equation is given with the proper boundary conditions by successive Hankel and Laplace transformations in an analytic form for the case of an impulse-form discharge of contamination from the chimney. The concentration value thus obtained is supplied by the factor taking into account the half life and then irtegrated for a given program of the discharge of the chimney (e.g., for constant operating). In the nonadsorbing case the contamination piled up on the ground is given by the value of the concentration, while in the adsorbing case the contamination per unit surface is given by the time integral of the contamination current directed toward the surface taking into account the half life. The effect of the wind can be taken into account by considering the co-ordinate-system to be moved downwind with the speed of the wind before the evaluations of the timemore » integrals and carrying out the integration only after this change in the formulas. Some relations are derived on this basis for the design of reactor stacks. The only uncertain parameter in the formulas is the effective diffusion constant of the contamination, which can be determined by the evaluation of certain measurements. (auth)« less" @default.
- W57616681 created "2016-06-24" @default.
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- W57616681 date "1958-07-01" @default.
- W57616681 modified "2023-09-24" @default.
- W57616681 title "ATMOSPHERIC DIFFUSION OF RADIOACTIVE CONTAMINATION FROM THE STACK OF A REACTOR" @default.
- W57616681 hasPublicationYear "1958" @default.
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