Low-energy charge transfer for collisions of Si3+ with atomic hydrogen
Low-energy charge transfer for collisions of Si3+ with atomic hydrogen
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DOI：
10.1103/physreva.77.064702
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发表时间：
2008-06-01
影响因子：
2.9
通讯作者：
Havener, C. C.
中科院分区：
文献类型：
--
作者：
Bruhns, H.;Kreckel, H.;Havener, C. C.
在橡树岭国家实验室的多电荷离子研究设施中，用合并束技术研究了Si ~（3+）离子与氢原子在碰撞能量为40-2500 eV/u时的电荷转移截面。数据跨越的能量范围内，分子轨道紧密耦合（MOCC）和经典轨迹蒙特卡罗（CTMC）计算。在我们的结果中清楚地看到了MOCC预测的离子核的量子力学效应的影响。然而，我们的实验和MOCC的结果之间的差异朝着更高的碰撞能量进行观察。在能量高于1000 eV/u的良好协议，发现与CTMC的结果。
Cross sections of charge transfer for Si3+ ions with atomic hydrogen at collision energies of approximate to 40-2500 eV/u were carried out using a merged-beam technique at the Multicharged Ion Research Facility at Oak Ridge National Laboratory. The data span an energy range in which both molecular orbital close coupling (MOCC) and classical trajectory Monte Carlo (CTMC) calculations are available. The influence of quantum mechanical effects of the ionic core as predicted by MOCC is clearly seen in our results. However, discrepancies between our experiment and MOCC results toward higher collision energies are observed. At energies above 1000 eV/u good agreement is found with CTMC results.