简并电子气中的双团簇阻止
Dicluster Stopping in a Degenerate Electron Gas
摘要：
在本文中，我们报告了我们的理论研究的各个方面的相关阻止功率的两个点状离子（一个双集群）移动在接近，但在某些金属靶材料的变化，后者被模拟的简并电子气与适当的密度。在线性响应理论范围内，我们对铝和铜两种金属靶中双质子团簇的相关阻止能、邻近函数和相关量进行了全面的研究，并给出了电子气介电函数的三种近似的详细和比较结果，即无色散和有色散的等离子体极点近似以及随机相位近似。在适用的情况下，还将结果与单个射弹的结果进行了比较。
英文摘要：
In this paper we report on our theoretical studies of various aspects of the correlated stopping power of two point-like ions (a dicluster) moving in close but variable vicinity of each other in some metallic target materials the latter being modelled by a degenerate electron gas with appropriate densities. Within the linear response theory we have made a comprehensive investigation of correlated stopping power, vicinage function and related quantities for a diproton cluster in two metallic targets, aluminum and copper, and present detailed and comparative results for three approximations to the electron gas dielectric function, namely the plasmon-pole approximation without and with dispersion as well as with the random phase approximation. The results are also compared, wherever applicable, with those for an individual projectile.
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