Publications Details
Partitioning of Ionization and Displacement Kerma in Material Response Functions
Calculations of total dose (relatable to heating) and ionizing dose (relatable to electron - hole pair formation) typically rely upon material kerma response functions and an assumption of charged particle equilibrium. Traditionally, kerma functions designed for use with the Sandia ASC NuGET code were created via the HEATR module of the NJOY code system, in which a simplifying monoatomic assumption in made. The purpose of this study is to relax that approximation through the use of binary collision simulation techniques, which can take into account the co - existence of multiple elements in a material. Specifically, the total, ionization, and displacement components of kerma are evaluated in silicon, gallium arsenide, gallium nitride, and indium phosphide using the TRIM and MARLOWE codes, and are compared against the equivalent NJOY - based functions. Based on the results, a binary collision - based methodology is proposed for extracting the partial kerma components of high - importance materials.