Spoke-Type Structures in an Ion Diode with Magnetic Insulation of Electrons

IF 0.9 4区物理与天体物理 Q4 PHYSICS, FLUIDS & PLASMAS

Plasma Physics Reports Pub Date : 2024-11-05 DOI:10.1134/S1063780X2460083X

A. I. Pushkarev, X. P. Zhu, S. S. Polisadov, P. Tang, Z. Yang, M. K. Lei

{"title":"Spoke-Type Structures in an Ion Diode with Magnetic Insulation of Electrons","authors":"A. I. Pushkarev, X. P. Zhu, S. S. Polisadov, P. Tang, Z. Yang, M. K. Lei","doi":"10.1134/S1063780X2460083X","DOIUrl":null,"url":null,"abstract":"<p>The article presents the results concerning the cross-sectional energy density distribution of a pulsed ion beam for two types of diodes with electron open drift: with external magnetic insulation (250 kV, 80 ns, 0.6 T) and with self-magnetic insulation of electrons (250–300 kV, 120 ns, 0.8 T). Anode plasma is formed using a breakdown along the surface of the anode dielectric coating (single-pulse mode) or explosive electron emission (with double opposite-polarity pulses). It was found that, when the energy density of the ion beam exceeds ≈0.4 J/cm<sup>2</sup>, periodic spoke-type structures with a step of 3–6 cm in the beam cross section are formed. The processes of formation of such a structure—nonuniform density of anode plasma and self-organization of anode and/or cathode plasma in crossed electric and magnetic fields—are analyzed. It is shown that the formation of local plasma regions in the anode–cathode gap of an ion diode can cause the formation of a periodic structure of the cross-sectional energy density distribution.</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":"50 10","pages":"1238 - 1249"},"PeriodicalIF":0.9000,"publicationDate":"2024-11-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1134/S1063780X2460083X.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Plasma Physics Reports","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1134/S1063780X2460083X","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"PHYSICS, FLUIDS & PLASMAS","Score":null,"Total":0}

引用次数: 0

Abstract

The article presents the results concerning the cross-sectional energy density distribution of a pulsed ion beam for two types of diodes with electron open drift: with external magnetic insulation (250 kV, 80 ns, 0.6 T) and with self-magnetic insulation of electrons (250–300 kV, 120 ns, 0.8 T). Anode plasma is formed using a breakdown along the surface of the anode dielectric coating (single-pulse mode) or explosive electron emission (with double opposite-polarity pulses). It was found that, when the energy density of the ion beam exceeds ≈0.4 J/cm², periodic spoke-type structures with a step of 3–6 cm in the beam cross section are formed. The processes of formation of such a structure—nonuniform density of anode plasma and self-organization of anode and/or cathode plasma in crossed electric and magnetic fields—are analyzed. It is shown that the formation of local plasma regions in the anode–cathode gap of an ion diode can cause the formation of a periodic structure of the cross-sectional energy density distribution.

查看原文本刊更多论文

离子二极管中的电子磁绝缘辐条式结构

文章介绍了两种电子开放漂移二极管脉冲离子束横截面能量密度分布的结果：外磁绝缘（250 kV，80 ns，0.6 T）和电子自磁绝缘（250-300 kV，120 ns，0.8 T）。阳极等离子体是通过阳极电介质涂层表面的击穿（单脉冲模式）或爆炸性电子发射（双反极性脉冲）形成的。研究发现，当离子束的能量密度超过 ≈0.4 J/cm2 时，就会形成周期性的辐条型结构，其横截面的步长为 3-6 厘米。分析了这种结构的形成过程--阳极等离子体密度不均匀以及阳极和/或阴极等离子体在交叉电场和磁场中的自组织。研究表明，在离子二极管的阳极-阴极间隙中形成局部等离子体区域会导致横截面能量密度分布形成周期性结构。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Plasma Physics Reports 物理-物理：流体与等离子体

CiteScore

1.90

自引率

36.40%

发文量

104

审稿时长

4-8 weeks

期刊介绍： Plasma Physics Reports is a peer reviewed journal devoted to plasma physics. The journal covers the following topics: high-temperature plasma physics related to the problem of controlled nuclear fusion based on magnetic and inertial confinement; physics of cosmic plasma, including magnetosphere plasma, sun and stellar plasma, etc.; gas discharge plasma and plasma generated by laser and particle beams. The journal also publishes papers on such related topics as plasma electronics, generation of radiation in plasma, and plasma diagnostics. As well as other original communications, the journal publishes topical reviews and conference proceedings.