与惰性气体碰撞时 Rh-、Ir- 的单电子脱离实验研究

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 : 2024-11-18 DOI:10.1016/j.nimb.2024.165580

Siming Wang , Yifei Yang , Rong Yang , Xuemei Zhang

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引用次数: 0

摘要

在 10 keV ≤ E ≤ 30 keV 的能量范围内，采用生长率法测量了 Rh-、Ir- 与 He、Ne、Ar、Kr、Xe 碰撞时的单电子脱离（SED）截面。基于多通道板（MCP）的位置敏感探测器用于测量未分离的负离子和产生的中性离子。SED 截面随着入射速度的增加而增大。这些数据与我们之前关于钴和铱与 Kr 和 Xe 碰撞的实验数据进行了比较。尽管 Co-、Rh-、Ir- 的基态电子构型都是 d8s2，但发现 Rh- 的 SED 截面远远低于 Co- 和 Ir-。

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Experimental study of single-electron detachment for Rh−, Ir− in collision with noble gases

The single electron detachment (SED) cross sections for Rh⁻, Ir⁻ in collision with He, Ne, Ar, Kr, Xe in the energy range of 10 keV ≤ E ≤ 30 keV are measured by using the growth rate method. A position sensitive detector based on Multi-Channel plate (MCP) is used to measure undetached negative ions and produced neutrals. The SED cross sections increase as the incident velocity increases. These data are compared with our previous experimental data of Co⁻ and Ir⁻ colliding with Kr and Xe. Although the ground state electron configurations of Co⁻, Rh⁻, Ir⁻ are all d⁸s², the SED cross sections of Rh⁻ are found to be much lower than those of Co⁻ and Ir⁻.

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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.