a. Prediction of energy deposition spectra initiated by nuclear interaction events shall be performed by a method agreed with the customer.
NOTE Prediction of energy deposition spectra initiated by nuclear interactions event are usually performed using detailed radiation transport simulations (see ECSS-E-HB-10-12 Section 5.7). However, where simplifications in the interactions and energy deposition processes permit, simplified analytical solutions are applied, provided the combined effects of the approximations produce an error within the accepted margins defined for the project.