Shell corrections in stopping powers
Shell corrections in stopping powers
复制标题
壳牌阻止本领的修正
DOI：
10.1103/physreva.65.052709
复制
发表时间：
2002
影响因子：
2.9
通讯作者：
H. Bichsel
中科院分区：
文献类型：
--
作者：
H. Bichsel
Bethe导出了快光离子的电子阻止本领S的理论。目前用于计算S的算法包括被称为平均激发能I、壳层校正、巴卡斯校正和布洛赫校正的项。这些术语在这里描述。对于壳修正的计算，使用原子模型，这是更现实的比氢近似使用至今。与类似的计算中，利用局部等离子体近似进行了比较。与实验数据的质子能量从0.3至10兆电子伏穿越铝和硅的密切协议被发现，而不需要可调参数的壳修正。
One of the theories of the electronic stopping power S for fast light ions was derived by Bethe. The algorithm currently used for the calculation of S includes terms known as the mean excitation energy I, the shell correction, the Barkas correction, and the Bloch correction. These terms are described here. For the calculation of the shell corrections an atomic model is used, which is more realistic than the hydrogenic approximation used so far. A comparison is made with similar calculations in which the local plasma approximation is utilized. Close agreement with the experimental data for protons with energies from 0.3 to 10 MeV traversing Al and Si is found without the need for adjustable parameters for the shell corrections.