激光产生的金属氢化物等离子体诊断研究

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 : 2024-09-14 DOI:10.1016/j.nimb.2024.165530
Xiang Wan , Pingping Gan , Huanyu Zhao , Junjie Zhang
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引用次数: 0

摘要

这项工作研究了激光产生的金属氢化物等离子体的特性。采用飞行时间技术和静电偏转方法测定了离子的电荷状态和速度。发现离子速度为超音速,数值范围在 104 至 105 m/s 之间。氢离子的比例低于钛离子。使用法拉第杯对离子发射行为进行了研究。考虑到总的集成空间,ns 脉冲激光能够产生大于 100 mA 的氢离子电流。为了了解等离子体的产生过程,我们对激光产生的等离子体和电弧等离子体进行了比较分析,还研究了激光功率密度对离子的组成和速度、金属氢化物的烧蚀特性以及氢离子发射的可维持性的影响。
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Diagnostic study on laser-produced metal hydride plasmas

The characteristics of laser-produced metal hydride plasmas have been investigated in this work. The charge state and velocity of ions were determined by employing a time-of-flight technique in conjunction with an electrostatic deflection method. The ion velocities were found to be supersonic with values in the range of 104 to 105 m/s. The proportion of hydrogen ions was found to be lower than that of titanium ions. The ion emission behavior was studied by using a Faraday cup. When the total integrated space was taken into account, the ns pulsed laser was capable of producing hydrogen ion currents greater than one hundred mA. In order to understand the plasma generation process, we performed a comparative analysis between laser-generated plasma and arc plasma, and also investigated the effect of laser power density on the composition and velocity of the ions, the ablation properties of metal hydrides, and the maintainability of hydrogen ion emission.

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来源期刊
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.
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