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Title
  • en Preliminary Study of Uncertainty-Driven Plasma Diffusion
Creator
    • en Oiwa, Tsuyoshi
    • en Shimazaki, Takahiro
Accessrights open access
Subject
  • Other en magnetic length
  • Other en uncertainty principle
  • Other en quantum mechanical diffusion
  • Other en anomalous diffusion
  • Other en neoclassical theory
  • NDC 427
Description
  • 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.
Publisher en Japan Society of Plasma Science and Nuclear Fusion Research
Date
    Issued2010
Language
  • eng
Resource Type journal article
Version Type VoR
Identifier HDL http://hdl.handle.net/2115/48805
Relation
  • URI http://www.jspf.or.jp/PFR/index.html
  • isIdenticalTo DOI https://doi.org/10.1585/pfr.5.S1050
Journal
    • EISSN 1880-6821
    • NCID AA12346675
      • en Plasma and Fusion Research
      • Volume Number5 Issue NumberS1050 Page StartS1050-1 Page EndS1050-4
File
Oaidate 2023-07-26