Screening Effects on the Ion-Ion Collisions in Nonideal Dense Metal Plasmas

Abstract

The plasma screening and quantum effects on ion-ion collisions are investigated in a nonideal Al and Cu dense metal plasma. Eikonal analysis and the effective pseudopotential model of the quantum-mechanical and plasma screening effects are used to obtain the eikonal phase shift and eikonal cross section for the ion-ion collision as functions of the impact parameter, collision energy, de Broglie wavelength, and Debye length in nonideal metal plasmas. The result shows that the plasma screening effect is more important than the quantum-mechanical effect in ion collisions in nonideal metal plasmas. The result shows that the eikonal phase shift decreases with an increase in the quantum-mechanical effect. Note that the Al-Cu ion collision cross section is found to be greater than the Al-Al and Cu-Cu ion collision cross sections in a dense metal plasma. (C) 2011 The Japan Society of Applied Physics