Screening effects on dynamic electron captures in nonideal plasmas

The dynamic plasma screening effects on the electron capture process are investigated in nonideal plasmas. The semiclassical version of the Bohr-Lindhard model with the impact parameter method is applied to obtain the electron capture probability in nonideal plasmas as a function of the impact parameter, debye length, thermal energy, and collision energy. The result shows that the electron capture radius and capture probability decrease with the increasing thermal energy. The dynamic screening effects on the capture probability are found to be more significant near the position of the maximum capture probability. It is also found that the electron capture radius and capture probability including the dynamic screening effects are found to be greater than those including the static screening effects. (c) 2006 American Institute of Physics.