Fe^<i>q</i>++ H, H₂and He Electron Loss and He²⁺+ H(<i>n</i>= 1,2) Electron Capture Cross Sections: Processes of Interest in Fusion Plasmas

Abstract

Cross sections have been calculated utilizing the classical trajectory Monte Carlo method for collisional processes of special interest to plasma fusion research. Specifically, H, H2 and He total electron loss cross sections for the impact by Feq+ (1 < q < 26) impurity ions, in the energy range of 50 to 500 keV/u, are presented. These results illustrate a clear departure for low charge states (q < 10) from scaling of the cross section with projectile charge (q). Further, cross sections for electron capture from both the ground and n = 2 states of H by 30 to 100 keV/u He2+ impact are tabulated as function of final n-level, yielding information for neutral beam heating models.