Semiclassical electron captures by protons from hydrogenic ions in nonideal classical plasmas

Abstract

Electron capture processes by protons from hydrogenic ions in nonideal classical plasmas are investigated in accordance with a semiclassical version of the Bohr–Lindhard model using the impact parameter method. The screened electron capture radius is obtained by using the effective pseudopotential model, taking into account the plasma screening effect and the collective effect. The scaled semiclassical electron capture probability is obtained as a function of the impact parameter, nonideal plasma parameter, Debye length, and projectile velocity. The nonideal plasma effect on the scaled semiclassical capture probability for the intermediate energy projectile is found to be more significant than that for the high energy projectile. The maximum position of the electron capture probability is getting close to the target ion as the nonideal plasma parameter increases.