Structures in Fully Differential Cross Sections for the Single Ionization of He by 2 MeV/amu C6+ Ion
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摘要: 用修饰的库仑波(MCB)模型计算入射能量2 MeV/amu裸碳离子碰撞氦单电离的全微分截面,并将计算结果与相应的实验数据和其他理论结果进行比较，发现MCB理论在较小的电离电子能量和较大的动量转移条件下与实验结果符合得很好，在动量转移比较小时MCB理论结果binary峰的位置向大角方向发生了偏移。MCB理论和3CW(三体库仑波)理论相似，他们都比3DW-EIS(三体扭曲波程函初态近似)理论符合的好，说明了在微扰势中被动离子与入射粒子的相互作用是不可忽略的。与3CW理论相比，MCB模型在初态波函数和相互作用势中加入扭曲效应，比较发现扭曲效应会影响全微分截面的大小，但影响不是很明显。The modified coulomb born (MCB) model is applied to study the single ionization of helium by 2 MeV/amu C6+ ion. The fully differential cross sections are presented for a variety of momentum transfers and ejected-electron energies in the scattering plane. The MCB results are compared with the experimental data and other theoretical predictions. We find that the MCB results are similar to the 3CW (three-body coulomb wave) results and they are superior to the 3DW-EIS (three-body distorted wave-eikonal initial state) results. It turns out that the treatment of the passive electron is very important for the results and distorting effects are not obvious.Abstract: The modified coulomb born (MCB) model is applied to study the single ionization of helium by 2 MeV/amu C6+ ion. The fully differential cross sections are presented for a variety of momentum transfers and ejected-electron energies in the scattering plane. The MCB results are compared with the experimental data and other theoretical predictions. We find that the MCB results are similar to the 3CW (three-body coulomb wave) results and they are superior to the 3DW-EIS (three-body distorted wave-eikonal initial state) results. It turns out that the treatment of the passive electron is very important for the results and distorting effects are not obvious.
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