MRI/RUI Acquisition of an additional low-energy grating for the existing monochromator on the atomic and molecular physics beam line 10.0.1 at the Advanced Light Source

这个MRI奖是仪器是进一步推进洛拉斯学院和内布拉斯加州林肯大学（UNL）之间的合作努力，在先进光源的原子光电离研究。 该研究涉及将原子束与来自ALS的束线10的低能X射线交叉到单个氩原子。 离子的激发需要电子之间的相互作用，因为电离光子的能量必须在射出的光电子和剩余的激发电子之间分配。 通过分析剩余激发离子的偏振以及随后的荧光衰减的波长，研究了在此电子-电子相互作用过程中的角动量分配。 通过该奖项提供的低能量光栅将增加光束线的光谱能力。 同时，它将为洛拉斯学院的本科生提供更多的机会，让他们在国家实验室的丰富环境中参与研究。 该仪器也将成为基础设施的一部分，向所有提出光束线实验的研究人员开放。

This MRI award is for instrumentation is to further advance a collaborative effort between Loras College and the University of Nebraska-Lincoln (UNL) in research on atomic photoionization at the Advanced Light Source. The research involves crossing an atomic beam with the low-energy x-rays from beam line 10 at the ALS to singly ionize argon atoms. Excitation of the ion requires an interaction between electrons, since the energy of the ionizing photon must be partitioned between the ejected photoelectron and the residual excited electrons. Angular momentum partitioning during this electron-electron interaction is studied by analyzing the polarization as well as the wavelength of the subsequent fluorescent decay of the residual excited ion. The low-energy grating provided through this award will increase the spectral capabilities of the beam line. At the same time, it will offer additional opportunities for undergraduate students at Loras College to participate in research in the rich environment of a national laboratory. The instrumentation will also become part of the infrastructure open to all researchers proposing experiments on the beam line.