The new external dose rate factor generator of the GENII-LIN health physics code

In environmental radiation protection, when external exposure is considered, it is common practice to refer to simplified and idealized exposure geometries: submersion in a semi-infinite cloud, exposure to ground surface contamination and exposure to soil contaminated to an infinite depth. In this vein, the GENII-LIN code offers pre-built dose rate factor libraries for commonly used standard geometries. For all scenarios where these generalized geometries are to be considered not adequate, the GENII-LIN software system provides its own external dose rate factor generator that allows for the creation of special dose rate factors for arbitrarily shaped sources. The GENII-LIN external dose rate factor generator is a modified and enhanced version of the well known shielding code ISOSHLD. In this work, we want to describe its latest development and its improved capabilities.