径向汇聚的低能量大电流电子束横截面上的能量密度分布

IF 0.4 4区 工程技术 Q4 ENGINEERING, MULTIDISCIPLINARY Instruments and Experimental Techniques Pub Date : 2024-06-28 DOI:10.1134/S0020441224700155
P. P. Kiziridi, G. E. Ozur
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引用次数: 0

摘要

摘要 使用分段式三通道量热计测量了径向汇聚的低能量(最高 25 keV)大电流电子束的能量密度分布。电子束的形成是通过一个双截面阴极组件完成的。在每个分段的半径为 4 厘米的环形阴极中,建立了 18 个由介质表面击穿触发的电阻去耦电弧等离子体源。各部分中心之间的距离为 4 厘米。测量在真空二极管模式(残余气体压力为 0.006 帕)和充气二极管模式(氩气压力为 0.08 帕)下进行。结果表明,光束中心部分的能量密度比外围部分平均高出 25-30%;这对于解决金属和合金表面改性的许多任务来说是可以接受的。阴极组件的寿命测试表明,其运行稳定性最低可达 50 000 个脉冲。
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Energy Density Distribution in the Cross Section of a Radially Converging Low-Energy High-Current Electron Beam

The energy density distribution of a radially converging low-energy (up to 25 keV) high-current electron beam has been measured using a sectioned three-channel calorimeter. The beam formation was performed using a two-sectioned cathode assembly. Eighteen resistively decoupled arc plasma sources triggered by a breakdown over the dielectric surface were built in the 4-cm-radius ring cathode of each section. The distance between the centers of sections was 4 cm. Measurements were performed both in the vacuum-diode mode (a pressure of residual gases of 0.006 Pa) and in the gas-filled diode mode (argon at a pressure of 0.08 Pa). It has been shown that the energy density in the central part of the beam is higher by 25–30% on average than in its peripheral parts; this can be acceptable for solving many tasks of surface modification of metals and alloys. Lifetime tests of the cathode assembly have shown its operation stability for 50 000 pulses in minimum.

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来源期刊
Instruments and Experimental Techniques
Instruments and Experimental Techniques 工程技术-工程:综合
CiteScore
1.20
自引率
33.30%
发文量
113
审稿时长
4-8 weeks
期刊介绍: Instruments and Experimental Techniques is an international peer reviewed journal that publishes reviews describing advanced methods for physical measurements and techniques and original articles that present techniques for physical measurements, principles of operation, design, methods of application, and analysis of the operation of physical instruments used in all fields of experimental physics and when conducting measurements using physical methods and instruments in astronomy, natural sciences, chemistry, biology, medicine, and ecology.
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