Feq++ H, H2and He Electron Loss and He2++ H(n= 1,2) Electron Capture Cross Sections: Processes of Interest in Fusion Plasmas

Cross sections have been calculated utilizing the classical trajectory Monte Carlo method for collisional processes of special interest to plasma fusion research. Specifically, H, H 2 and He total electron loss cross sections for the impact by Fe q + (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 He 2+ impact are tabulated as function of final n -level, yielding information for neutral beam heating models.