Electron capture of Xe 54 + in collisions with H 2 molecules in the energy range between 5.5 and 30.9 MeV/u
Electron capture of Xe 54 + in collisions with H 2 molecules in the energy range between 5.5 and 30.9 MeV/u
复制标题
Xe 54 在与 H 2 分子碰撞时在 5.5 至 30.9 MeV/u 能量范围内的电子捕获
DOI：
10.1103/physreva.102.042825
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发表时间：
2020
影响因子：
2.9
通讯作者：
Kröger F
中科院分区：
文献类型：
--
作者：
Kröger F
研究了达姆施塔特GSI实验储存环（ESR）内气体靶与分子碰撞的电子俘获过程。电子俘获到激发射弹态的截面值是从观测到的类氢离子俘获靶电子后发射的莱曼辐射的发射截面推导出来的，通过应用ESR的减速模式，离子束能量范围在5.5 ~ 30.9 MeV/u之间变化。因此，电子捕获数据记录在中间，特别是低碰撞能量制度，远远低于必要的束能量产生裸氙离子。所获得的数据被认为是在合理的定性协议与理论方法，而一个常用的经验公式显着高估了实验结果。
The electron-capture process was studied forcolliding withmolecules at the internal gas target of the Experimental Storage Ring (ESR) at GSI, Darmstadt. Cross-section values for electron capture into excited projectile states were deduced from the observed emission cross section of Lyman radiation, being emitted by the hydrogenlike ions subsequent to the capture of a target electron. The ion beam energy range was varied between 5.5 and 30.9 MeV/u by applying the deceleration mode of the ESR. Thus, electron-capture data were recorded at the intermediate and, in particular, the low-collision-energy regime, well below the beam energy necessary to produce bare xenon ions. The obtained data are found to be in reasonable qualitative agreement with theoretical approaches, while a commonly applied empirical formula significantly overestimates the experimental findings.