Q.-L. Yang, W. Chen, L.-M. Yu, P.-W. Shi, X.-Q. Ji, Zh.-B. Shi
{"title":"非破坏性 HL-2A 等离子体中与强撕裂模式相关的磁重联过程中高能电子群的增强","authors":"Q.-L. Yang, W. Chen, L.-M. Yu, P.-W. Shi, X.-Q. Ji, Zh.-B. Shi","doi":"10.1134/s1063780x22602127","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>Laboratory observations of enhancements of energetic-electron population are presented during magnetic reconnection associated with strong tearing mode in non-disruptive tokamak plasmas. The hard X‑ray (HXR) spectrum detected by cadmium-telluride (CdTe) scintillator detectors and the non-thermal radiation measured by the electron cyclotron emission (ECE) are used to analyze the behaviors of energetic electrons on HL-2A. A population of energetic electrons is generated by parallel electric fields <span>\\({{E}_{\\parallel }}\\)</span> during magnetic reconnection, which is evidenced by the production of hard X-rays with energy 10 keV < <i>E</i><sub>γ</sub> < 200 keV. The results could assist to better understand the acceleration mechanism of electrons in the parameter-regime of tokamak plasma. It is observed that the energetic-electrons jointly accelerated by Ohmic electric fields and parallel electric fields have significant effects on the behaviors of low frequency MHD modes, namely, which excite Alfvénic and acoustic type instabilities during strong tearing modes (TMs).</p>","PeriodicalId":735,"journal":{"name":"Plasma Physics Reports","volume":null,"pages":null},"PeriodicalIF":0.9000,"publicationDate":"2024-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Enhancement of Energetic-Electron Population During Magnetic Reconnection Associated with Strong Tearing Mode in Non-Disruptive HL-2A Plasmas\",\"authors\":\"Q.-L. Yang, W. Chen, L.-M. Yu, P.-W. Shi, X.-Q. Ji, Zh.-B. Shi\",\"doi\":\"10.1134/s1063780x22602127\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<h3 data-test=\\\"abstract-sub-heading\\\">Abstract</h3><p>Laboratory observations of enhancements of energetic-electron population are presented during magnetic reconnection associated with strong tearing mode in non-disruptive tokamak plasmas. The hard X‑ray (HXR) spectrum detected by cadmium-telluride (CdTe) scintillator detectors and the non-thermal radiation measured by the electron cyclotron emission (ECE) are used to analyze the behaviors of energetic electrons on HL-2A. A population of energetic electrons is generated by parallel electric fields <span>\\\\({{E}_{\\\\parallel }}\\\\)</span> during magnetic reconnection, which is evidenced by the production of hard X-rays with energy 10 keV < <i>E</i><sub>γ</sub> < 200 keV. The results could assist to better understand the acceleration mechanism of electrons in the parameter-regime of tokamak plasma. It is observed that the energetic-electrons jointly accelerated by Ohmic electric fields and parallel electric fields have significant effects on the behaviors of low frequency MHD modes, namely, which excite Alfvénic and acoustic type instabilities during strong tearing modes (TMs).</p>\",\"PeriodicalId\":735,\"journal\":{\"name\":\"Plasma Physics Reports\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.9000,\"publicationDate\":\"2024-01-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Plasma Physics Reports\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://doi.org/10.1134/s1063780x22602127\",\"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}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Plasma Physics Reports","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1134/s1063780x22602127","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}
Enhancement of Energetic-Electron Population During Magnetic Reconnection Associated with Strong Tearing Mode in Non-Disruptive HL-2A Plasmas
Abstract
Laboratory observations of enhancements of energetic-electron population are presented during magnetic reconnection associated with strong tearing mode in non-disruptive tokamak plasmas. The hard X‑ray (HXR) spectrum detected by cadmium-telluride (CdTe) scintillator detectors and the non-thermal radiation measured by the electron cyclotron emission (ECE) are used to analyze the behaviors of energetic electrons on HL-2A. A population of energetic electrons is generated by parallel electric fields \({{E}_{\parallel }}\) during magnetic reconnection, which is evidenced by the production of hard X-rays with energy 10 keV < Eγ < 200 keV. The results could assist to better understand the acceleration mechanism of electrons in the parameter-regime of tokamak plasma. It is observed that the energetic-electrons jointly accelerated by Ohmic electric fields and parallel electric fields have significant effects on the behaviors of low frequency MHD modes, namely, which excite Alfvénic and acoustic type instabilities during strong tearing modes (TMs).
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.
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