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Effective heating of nonadiabatic protons in magnetic reconnection with a guide field
http://hdl.handle.net/10655/00012646
http://hdl.handle.net/10655/00012646c820226b-ae8f-4d91-a26a-9a7ab16060c0
名前 / ファイル | ライセンス | アクション |
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Phys.Plasmas24_092101 (2.5 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2021-09-22 | |||||
タイトル | ||||||
タイトル | Effective heating of nonadiabatic protons in magnetic reconnection with a guide field | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
著者 |
USAMI, Shunsuke
× USAMI, Shunsuke× Horiuchi, Ritoku× OHTANI, Hiroaki |
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著者ID | ||||||
内容記述タイプ | Other | |||||
内容記述 | 0000-0003-2605-5600 | |||||
抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The mechanism of plasma heating through magnetic reconnection with a guide magnetic field is investigated by means of two-dimensional electromagnetic particle simulations. These simulations mimic the dynamics of two torus plasmas merging through magnetic reconnection in a spherical tokamak (ST) device. It is found that a large part of protons, which behave as nonadiabatic, are effectively heated in the downstream because a ring-like structure of proton velocity distribution is observed at a local point in the downstream. The characteristic features of the velocity distribution can be explained as the following proton motion. Upon entering the downstream across the separatrix, nonadiabatic protons suddenly feel the strong electromagnetic field in the downstream and move in the outflow direction while rotating mainly around the guide magnetic field. The protons gain kinetic energy not only on the separatrix but also in the downstream. This effective heating process can be interpreted as the “pickup,” which, however, was thought to be responsible for only heavy ions. In this work, it is demonstrated that the pickup of protons is compatible with the known pickup theory in the cases in which the plasma beta is much less than 1, which is satisfied in STs. | |||||
書誌情報 |
Physics of Plasmas 巻 24, p. 092101, 発行日 2017-08-10 |
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出版者 | ||||||
出版者 | AIP Publishing | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 10897674 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA10987555 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1063/1.4997453 | |||||
権利 | ||||||
権利情報 | This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Physics of Plasmas 24, 092101 (2017) and may be found at https://aip.scitation.org/doi/abs/10.1063/1.4997453. | |||||
情報源 | ||||||
関連名称 | Physics of Plasmas 24, 092101 (2017) | |||||
関連サイト | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1063/1.4997453 | |||||
関連名称 | Publisher version | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||
NAIS | ||||||
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