The COLTRIMS Reaction Microscope—The Spyhole into the Ultrafast Entangled Dynamics of Atomic and Molecular Systems,Annalen Der Physik

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The COLTRIMS Reaction Microscope—The Spyhole into the Ultrafast Entangled Dynamics of Atomic and Molecular Systems
Annalen Der Physik ( IF 2.2 ) Pub Date : 2021-07-28 , DOI: 10.1002/andp.202100134
Horst Schmidt‐Böcking ₁ , Joachim Ullrich ₂ , Reinhard Dörner ₁ , Charles Lewis Cocke ₃

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The COLTRIMS Reaction Microscope C-REMI can image the momentum vectors of all emitted charged fragments in an atomic or molecular reactions similar to the bubble chamber in high energy particle physics. C-REMI can detect fragments with “zero” kinetic energy in an ultrahigh vacuum environment by projecting them with weak electromagnetic fields onto position-sensitive detectors. Geometrically a nearly 4π collection solid angle and a nearly 50% efficiency for a fivefold multi-coincidence can be achieved. Measuring time-of-flight and detector position the momenta of the fragments can be measured with excellent resolution (<0.01 a.u.; see A1 in the Appendix). Thus, multivector correlations in momentum space are measured, which provide insight into the entangled dynamics of atomic and molecular quantum systems. From these vector-correlations phases and energies can be deduced which allow for relative time measurements even in the zeptosecond range. C-REMI provides a “spyhole” into the secrets of ultrafast dynamics of atomic and molecular processes. It is applied today around the globe in numerous research projects in physics and chemistry. The purpose for writing this article is to demonstrate the universal application possibilities of C-REMI, and its high multi-coincidence efficiency and high momentum resolution. This paper will not give a review on all milestone experiments performed with C-REMI.

中文翻译：

COLTRIMS 反应显微镜——原子和分子系统超快纠缠动力学的窥视孔

COLTRIMS 反应显微镜 C-REMI 可以对原子或分子反应中所有发射带电碎片的动量矢量进行成像，类似于高能粒子物理学中的气泡室。C-REMI 可以通过将带有弱电磁场的碎片投射到位置敏感的探测器上，从而在超高真空环境中检测具有“零”动能的碎片。在几何上，可以实现接近 4π 的收集立体角和接近 50% 的五重多重符合效率。测量飞行时间和探测器位置，可以以极好的分辨率（<0.01 au；见附录 A1）测量碎片的动量。因此，可以测量动量空间中的多向量相关性，从而深入了解原子和分子量子系统的纠缠动力学。从这些矢量相关性可以推导出相位和能量，即使在 zeptosecond 范围内也可以进行相对时间测量。C-REMI 为了解原子和分子过程的超快动力学秘密提供了一个“间谍”。如今，它在全球范围内应用于众多物理和化学研究项目中。写这篇文章的目的是展示 C-REMI 的普遍应用可能性，以及它的高多重符合效率和高动量分辨率。本文不会对使用 C-REMI 进行的所有里程碑实验进行回顾。如今，它在全球范围内应用于众多物理和化学研究项目中。写这篇文章的目的是展示 C-REMI 的普遍应用可能性，以及它的高多重符合效率和高动量分辨率。本文不会对使用 C-REMI 进行的所有里程碑实验进行回顾。如今，它在全球范围内应用于众多物理和化学研究项目中。写这篇文章的目的是展示 C-REMI 的普遍应用可能性，以及它的高多重符合效率和高动量分辨率。本文不会对使用 C-REMI 进行的所有里程碑实验进行回顾。

更新日期：2021-09-13

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