The phase effect of electronic stopping power

作     者：Ma Zhong-Quan and Zheng Yu-Feng (Department of Physics, Xinjiang University, Urumqi 830046)(Department of Materials Science and Engineering, Tsinghua University, Beijing 100084) 

出 版 物：《Nuclear Science and Techniques》 (核技术（英文）)

年 卷 期：1998年第9卷第2期

页      面：86-89页

核心收录：

学科分类：08[工学] 0827[工学-核科学与技术] 082701[工学-核能科学与工程] 

主　　题：高能离子 非弹性碰撞 电子停止功率 

摘      要：A corrective factor (E,ρ)≤1) dependent on ion energy and mass density of material for energy loss has been introduced into Bethe-Bloch formula, so that the energy deposition process of fast ion penetrating through the allotropic solid films are well discussed with the two-component assumption. An analysis expression of electronic stopping power for different phase structures has been derived from the contribution of valence and core electrons. The two thirds of inelastic scattering arisen from valence electron was revealed by comparing the theoretical calculation and experimental results on both random and oriented lattice site. The corrective factor representative to the role of inner electrons increases with the projectile energy but decreases with mass density of solids.