| タイトル |
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en
Preliminary Study of Uncertainty-Driven Plasma Diffusion
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| 作成者 |
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| アクセス権 |
open access |
| 主題 |
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Other
en
magnetic length
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Other
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uncertainty principle
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Other
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quantum mechanical diffusion
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Other
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anomalous diffusion
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Other
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neoclassical theory
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NDC
427
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| 内容注記 |
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Abstract
en
Quantum mechanical plasma diffusion is studied using a semi-classical model with two different characteristic lengths; one is the average interparticle separation, and the other is the magnetic length. The diffusion coefficients D derived in this study show a dependence on several plasma parameters, such as temperature T, mass m, density n, and magnetic field B, similar to that observed experimentally. The numerical values of the diffusion coefficient D in this study are as large as that for neoclassical diffusion. We have pointed out in this study that (i) for distant encounters in typical fusion plasmas of T = 10 keV and n = 1020 m−3, the average potential energy U ∼ 30meV is as small as the uncertainty in energy ΔE ∼ 40meV, and (ii) for a magnetic field B = 3 T, the spatial size of the wavefunction in the plane perpendicular to the magnetic field is as large as B ∼ 1.4 × 10−8 m, which is much larger than the typical electron wavelength λe ∼ 10−11 m.
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| 出版者 |
en
Japan Society of Plasma Science and Nuclear Fusion Research
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| 日付 |
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| 言語 |
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| 資源タイプ |
journal article |
| 出版タイプ |
VoR |
| 資源識別子 |
HDL
http://hdl.handle.net/2115/48805
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| 関連 |
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URI
http://www.jspf.or.jp/PFR/index.html
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isIdenticalTo
DOI
https://doi.org/10.1585/pfr.5.S1050
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| 収録誌情報 |
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EISSN
1880-6821
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NCID
AA12346675
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en
Plasma and Fusion Research
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巻5
号S1050
開始ページS1050-1
終了ページS1050-4
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| ファイル |
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| コンテンツ更新日時 |
2023-07-26 |
