Laser resonance chromatography: First commissioning results and future prospects

IF 1.4 3区物理与天体物理 Q3 INSTRUMENTS & INSTRUMENTATION Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms Pub Date : 2024-07-15 DOI:10.1016/j.nimb.2024.165461

EunKang Kim , Biswajit Jana , Aayush Arya , Michael Block , Sebastian Raeder , Harry Ramanantoanina , Elisabeth Rickert , Elisa Romero Romero , Mustapha Laatiaoui

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Abstract

We report first results obtained during the commissioning of the Laser Resonance Chromatography (LRC) apparatus, which is conceived to enable atomic structure investigations in the region of the heaviest elements beyond nobelium. In our studies we first established optimum conditions for the operation of the different components of the setup, including the radio-frequency quadrupole ion buncher and the cryogenic drift tube, which was operated with helium buffer gas at relatively low electric fields. We used laser ablated hafnium, lutetium, and ytterbium cations to assess the chromatography performance of the drift tube at a gas temperature of 295 K. Arrival time distributions of singly charged lutetium revealed two distinct ion mobilities of this ion in the ground and metastable state in helium with a relative difference of about 19%. By using ²¹⁹Rn ions from a ²²³Ra recoil source the overall efficiency of the apparatus is found to be $(0.6 \pm 0.1)$ %. The findings help to establish LRC on lutetium, which is the lighter chemical homolog of lawrencium.

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激光共振色谱法：首次试运行结果和未来展望

我们报告了激光共振色谱（LRC）仪器调试期间取得的初步结果，该仪器的设计目的是在锘以外的最重元素区域进行原子结构研究。在研究中，我们首先确定了该装置不同组件的最佳运行条件，包括射频四极离子束器和低温漂移管，该漂移管在相对较低的电场下使用氦缓冲气运行。我们使用激光烧蚀的铪、镥和镱阳离子来评估漂移管在 295 K 气体温度下的色谱性能。单电荷镥的到达时间分布显示，该离子在氦气中的基态和逸散态有两种不同的离子迁移率，相对差异约为 19%。通过使用来自 223Ra 反冲源的 219Rn 离子，发现该仪器的总体效率为 (0.6±0.1)%。这些发现有助于在镥（铹的较轻化学同系物）上建立 LRC。

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来源期刊

Nuclear Instruments & Methods in Physics Research Section B-beam Interactions With Materials and Atoms 物理-核科学技术

CiteScore

2.80

自引率

7.70%

发文量

231

审稿时长

1.9 months

期刊介绍： Section B of Nuclear Instruments and Methods in Physics Research covers all aspects of the interaction of energetic beams with atoms, molecules and aggregate forms of matter. This includes ion beam analysis and ion beam modification of materials as well as basic data of importance for these studies. Topics of general interest include: atomic collisions in solids, particle channelling, all aspects of collision cascades, the modification of materials by energetic beams, ion implantation, irradiation - induced changes in materials, the physics and chemistry of beam interactions and the analysis of materials by all forms of energetic radiation. Modification by ion, laser and electron beams for the study of electronic materials, metals, ceramics, insulators, polymers and other important and new materials systems are included. Related studies, such as the application of ion beam analysis to biological, archaeological and geological samples as well as applications to solve problems in planetary science are also welcome. Energetic beams of interest include atomic and molecular ions, neutrons, positrons and muons, plasmas directed at surfaces, electron and photon beams, including laser treated surfaces and studies of solids by photon radiation from rotating anodes, synchrotrons, etc. In addition, the interaction between various forms of radiation and radiation-induced deposition processes are relevant.