A novel application of the multi-group method: Coupled neutron–gamma–electron cross-section library

A multi-group neutron–gamma cross-section library in DTF-IV format is supplemented with electron production matrix to generate a coupled neutron–gamma–electron library. This is realized by estimating the contributions from Compton scattering, pair production and photoelectric effect to the electron production cross-sections. A novel application of this new library, which involves transport of neutrons, gammas and electrons, for estimating the Compton current due to a pulse of radiation in air is discussed.