Deterministic and Monte Carlo codes for multiple scattering photon transport

► Deterministic and Monte Carlo (MC) techniques are complementary. ► Three examples of photon transport illustrate the need of both approaches. ► MC algorithm of the Compton profile is refined using a deterministic model. ► A deterministic approachoutperforms MC to describethe natural line breath. ► A new improved photon kernel is defined using a MC coupled electron-photon code.