Model for calculating energy absorption in environmental objects from incorporated sources of monoenergetic electrons

Model is suggested to calculating energy absorption in organisms of various geometry from incorporated sources of monoenergetic electrons. The effectiveness of the approach was demonstrated for spheres, ellipsoids, and cylinders by comparison of analytical values with large international testing data. Model equations are free of any fitting parameters; computer approximating procedures are not employed. The method allows to make correct express-calculations of internal absorbed doses in various biological objects from beta emitting radionuclides; the calculations are performed without Monte Carlo codes. The model may be used in the internal radiation dosimetry for non-human biota, and in environmental radiation protection.