skip to main content

SciTech ConnectSciTech Connect

Title: Ion temperature gradient driven turbulence with strong trapped ion resonance

A theory to describe basic characterization of ion temperature gradient driven turbulence with strong trapped ion resonance is presented. The role of trapped ion granulations, clusters of trapped ions correlated by precession resonance, is the focus. Microscopically, the presence of trapped ion granulations leads to a sharp (logarithmic) divergence of two point phase space density correlation at small scales. Macroscopically, trapped ion granulations excite potential fluctuations that do not satisfy dispersion relation and so broaden frequency spectrum. The line width from emission due only to trapped ion granulations is calculated. The result shows that the line width depends on ion free energy and electron dissipation, which implies that non-adiabatic electrons are essential to recover non-trivial dynamics of trapped ion granulations. Relevant testable predictions are summarized.
Authors:
 [1] ;  [2] ;  [3] ;  [2] ;  [4] ;  [5] ;  [6] ;  [2] ;  [7]
  1. Institute for Advanced Study, Kyushu University, Fukuoka (Japan)
  2. (Japan)
  3. Research Center for Plasma Turbulence, Kyushu University, Fukuoka (Japan)
  4. CASS and CMTFO, University of California at San Diego, La Jolla, California 92093 (United States)
  5. (Korea, Republic of)
  6. National Institute for Fusion Science, Gifu (Japan)
  7. Research Institute for Applied Mechanics, Kyushu University, Fukuoka (Japan)
Publication Date:
OSTI Identifier:
22299662
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 10; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; CORRELATIONS; DISPERSION RELATIONS; ELECTRONS; EMISSION; FLUCTUATIONS; FREE ENERGY; GRANULATION; ION TEMPERATURE; IONS; LINE WIDTHS; PHASE SPACE; POTENTIALS; TEMPERATURE GRADIENTS; TRAPPING; TURBULENCE