Recoil-Ion Momentum Spectroscopy and “Reaction Microscopes”
Recoil-Ion Momentum Spectroscopy and “Reaction Microscopes”
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反冲离子动量谱和“反应显微镜”
DOI：
10.1007/978-3-662-08492-2_2
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发表时间：
2003
影响因子：
2.9
通讯作者：
H. Kollmus
中科院分区：
文献类型：
--
作者：
R. Moshammer;D. Fischer;H. Kollmus
反冲离子动量谱（RIMS）在过去十年中的快速发展无疑可以被视为研究任何类型的原子反应动力学的实验突破。每当原子或简单分子与电子、离子或光子相互作用时，与传统的电子光谱方法相比，高分辨率反冲离子测量的概念产生了额外的和补充的信息，在某些情况下，甚至可以首次收集运动学上完整的数据集。最先进的高分辨率反冲离子动量谱仪通过许多技术发展而发展，例如，冷超音速射流目标的实现，反冲离子和电子的明确电提取场的使用，以及带电粒子探测技术的快速发展。其中，利用超音速射流产生局部化良好的内冷靶（COLD靶离子动量谱COLTRIMS）可以被视为最重要的组成部分。它们允许人们实现远低于1 a.u的反冲离子动量分辨率。（原子单位），这对于室温靶是不可能的，这是由于热运动（室温氦原子的动量扩散约为3.7 u.）。另一个决定性的发展是发明了完全新颖和极其有效的电子成像概念。
The rapid and still ongoing development of recoil-ion momentum spectroscopy (RIMS) during the last ten years can undoubtedly be viewed as an experimental breakthrough for the investigation of any kind of atomic reaction dynamics. Whenever atoms or simple molecules interact with electrons, ions or photons, the concept of high—resolution recoil-ion measurements resulted in additional and complementary information compared to the traditional electron spectroscopy methods, and in some cases even kinematically complete data sets could be collected for the very first time. State—of—the—art high-resolution recoil-ion momentum spectrometers evolved through numerous technical developments like, e.g., the implementation of cold supersonicjet targets, the use of well defined electric extraction fields for recoil ions as well as for electrons and the rapid progress in charged particle detection techniques. Among them the use of supersonic jets to produce well localized and internally cold targets (COLd Target Recoil-Ion Momentum Spectroscopy COLTRIMS) can be viewed as the most important ingredient. They allowed one to achieve a recoil-ion momentum resolution far below 1 a.u. (atomic unit) that would be impossible with room-temperature targets due to the thermal motion (the momentum spread of room-temperature helium atoms is about 3.7 a. u.). Another decisive development was the invention of completely novel and extremely efficient electron—imaging concepts.