Description
Electron-impact excitation and ionization processes in a nonextensive plasma are examined within the framework of Tsallis q-entropy. The ionization probability is evaluated as a function of the impact parameter by employing a semiclassical trajectory method. The analysis shows that the presence of Tsallis q-entropy leads to a reduction in the electron-impact ionization cross section. The magnitude of this effect decreases with increasing electron-to-ion temperature ratio, whereas it becomes more significant as the projectile-electron energy increases. In addition, the location of the peak ionization probability is found to shift outward from the target center with increasing values of the q-parameter.
Authors
Myoung-Jae Lee
(Hanyang University)
Prof.
Young-Dae Jung
(Hanyang University)