A complete particle-in-cell (PIC) simulation has, for the first time, been performed for the transport and energy deposition of an intense proton beam within a solid. In particular, for close interactions, we developed a novel Monte-Carlo binary collision model that takes into account all interactions between the incident protons and matter, e.g. proton-nuclei, proton-bound electron and proton-free electron. This includes especially also a Monte-Carlo model for the collisional ionization and electron-ion recombination as well as the depression of the ionization potential by surrounding charged particles. Moreover, we take into account collective electromagnetic effects by solving reduced Maxwell Equations. For intense proton beams, the collective electromagnetic effects ensure localized energy deposition by collimating proton beams, which would otherwise be deflected by the collisions with nucleus. This simulation model enables kinetic investigation of charged particle transport in high energy density plasmas.
|Category of your contribution||Fundamental processes in ion source, plasma|