Radiative accelerations through photoionization and bremsstrahlung; autoionization

École Normale Supérieure de Lyon, CRAL (UMR CNRS No. 5574), 69364 Lyon Cedex 07, France

Abstract

Whereas transition probabilities needed for the computation of radiative forces due to bound-bound absorptions are generally available photoionisation and bremsstrahlung require going one step further than the dipolar approximation in treating the radiation matter interaction. I will try to give an overview of the current status on both theoretical and practical points.
Autoionization resonances deserve further investigation: though they can dominate photoionization cross sections very little is known on how they might impact radiative forces. I will show through recent literature that specific atomic calculations have to be performed.