低速分子离子在固体电子气中的散射与能量损失

SCATTERING AND ENERGY LOSS FOR SLOW MOLECU-LAR IONS IN ELECTRON GASES IN SOLIDS

利用量子力学中的电子分子散射理论，研究了低速双原子分子离子在固体电子气中的散射与能量损失，重点讨论了两离子之间的干扰效应对能量损失的影响。根据原子的ｉｎｄｅｐｅｎｄａｎｔｐａｒｔｉｃｌｅ－ｍｏｄｅｌ（ＩＰＭ）势和变相法，确定了单原子离子的散射相移和阻止本领，并与非线性密度泛函理论的结果进行了比较。

With the theory of electron-molecule scattering, we have investigated the scat-tering and energy loss for slow diatomic molecular ions in electron gases in solidsand discussed the influence of the coherence effects between two ions to the energyloss.The scattering phase shifts are calculated using atomic IPM potential and thevariable phase method.The stopping powers for atomic ions are compared with theresults given by the nonlinear density-functional theory.