Model Computations of Radon, and Radon Decay Product, Concentrations in an Open System; the Hewlett-Packard 41C Program RNSS, Version 02

摘要

Expressions for the time dependence of the nuclide concentrations of a decay series in an open system are presented. These expressions simplify considerably in the steady state situation. For the computation of steady state concentrations of radon and its short-lived decay products, an HP-41C computer program is described. The potential alpha energy concentration and the equilibrium factor are also calculated. The program is based on a model that takes into account the supply of all nuclides by the ventilation air, the emanation of radon from the surface of the system, the removal of all nuclides by the ventilation air, the removal of the short-lived decay products by deposition, and radioactive decay. Two examples of the program execution are given. The program source is listed.