用壳层局域等离子体近似计算铜对质子的理论阻止本领
Theoretical stopping power of copper for protons using the shellwise local plasma approximation
摘要：
本文对质子在固体铜中的能量损失进行了理论研究。内壳层采用从头算壳层局域等离子体近似（SLPA），价电子采用Mermin介电函数。分别计算了靶电子各子壳层的部分贡献，包括相同结合能的电子之间的屏蔽。目前的结果得到使用SLPA和已知的Hartree-Fock波函数铜。理论曲线与实验数据进行比较，并与半经验的srim 08值，在一个大的能量区域（5千电子伏-30兆电子伏）显示出非常好的协议。
英文摘要：
We present a theoretical study on the energy loss by protons in solid copper. The ab initio shellwise local plasma approximation (SLPA) is employed for the inner-shells, and the Mermin dielectric function for the valence electrons. The partial contribution of each sub-shell of target electrons is calculated separately, including the screening among the electrons of the same binding energy. Present results are obtained using the SLPA and the known Hartree-Fock wave functions for copper. The theoretical curves are compared with the experimental data available and with the semi-empirical srim08 values, showing very good agreement in a large energy region (5 keV-30 MeV).
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