Advanced Physics for Brachytherapy 2018

1. I need to be efficient

The iterations are needed because I do not know q scat

within the energy group

i.e. scattering events with minimal energy transfer

When do I expect delays in convergence?

Multiple scattering with minimal energy transfer that occurs in the 192 Ir energy range as well as coherent scattering that is significant at low energies and high Z materials, delay convergence

Algorithms to force convergence are used (DSA-Diffusion synthetic acceleration)