Application of a metallic-magnetic calorimeter for high-resolution X-ray spectroscopy of Fe at an EBIT

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-03-15 DOI:10.1088/1361-6455/ad34a2

M. O. Herdrich, D. Hengstler, S. Allgeier, Marvin Friedrich, A. Fleischmann, C. Enss, Sonja Bernitt, T. Morgenroth, S. Trotsenko, Reinhold Schuch, Thomas Stöhlker

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Abstract

In this work, we present an experiment conducted at the S-EBIT-I ion trap of GSI. It involved the study of ion-electron collisions of Fe and Ba ions in various charge states with the electron beam. Characteristic X-ray radiation emitted during the continuous interaction was recorded utilizing an energy-dispersive maXs-30 detector based on metallic-magnetic calorimeter (MMC) technology. Optimizations to the applied gain-drift correction and energy calibration procedures significantly improved the achieved energy resolution compared to previous applications of a similar detector. This made it possible to individually resolve and identify overlapping X-ray lines of iron and barium in a wide spectral range. As a demonstration of the outstanding detector performance, we used the recorded spectral data to extract an estimate of the charge state distribution of Fe ions in the trap. This experiment campaign marks an important milestone in the ongoing effort to enable the deployment of MMC detectors for future high-precision measurements in fundamental physics experiments.

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应用金属磁性量热计对 EBIT 中的铁进行高分辨率 X 射线光谱分析

在这项工作中，我们介绍了在 GSI 的 S-EBIT-I 离子阱中进行的一项实验。该实验研究了不同电荷状态的铁离子和钡离子与电子束发生的离子-电子碰撞。利用基于金属磁性量热计（MMC）技术的能量色散 maXs-30 探测器记录了连续相互作用过程中发出的特征 X 射线辐射。与以前使用的类似探测器相比，对增益漂移校正和能量校准程序的优化大大提高了能量分辨率。这使得在宽光谱范围内单独分辨和识别铁和钡的重叠 X 射线成为可能。为了证明探测器的卓越性能，我们利用记录的光谱数据提取了阱中铁离子电荷状态分布的估计值。这次实验活动标志着一个重要的里程碑，我们正在努力部署 MMC 探测器，用于未来基础物理实验中的高精度测量。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.