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Title: Transition from thermal to turbulent equilibrium with a resulting electromagnetic spectrum

A recent paper [Ziebell et al., Phys. Plasmas 21, 010701 (2014)] discusses a new type of radiation emission process for plasmas in a state of quasi-equilibrium between the particles and enhanced Langmuir turbulence. Such a system may be an example of the so-called “turbulent quasi-equilibrium.” In the present paper, it is shown on the basis of electromagnetic weak turbulence theory that an initial thermal equilibrium state (i.e., only electrostatic fluctuations and Maxwellian particle distributions) transitions toward the turbulent quasi-equilibrium state with enhanced electromagnetic radiation spectrum, thus demonstrating that the turbulent quasi-equilibrium discussed in the above paper correctly describes the weakly turbulent plasma dynamically interacting with electromagnetic fluctuations, while maintaining a dynamical steady-state in the average sense.
Authors:
 [1] ;  [2] ;  [3] ;  [1] ;  [4] ;  [5]
  1. Instituto de Física, UFRGS, Porto Alegre, RS (Brazil)
  2. Institute for Physical Science and Technology, University of Maryland, College Park, Maryland 20742 (United States)
  3. (Korea, Republic of)
  4. (Brazil)
  5. Instituto de Física e Matemática, UFPel, Pelotas, RS (Brazil)
Publication Date:
OSTI Identifier:
22252120
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physics of Plasmas; Journal Volume: 21; Journal Issue: 1; 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; ELECTROMAGNETIC RADIATION; FLUCTUATIONS; PLASMA; SPECTRA; STEADY-STATE CONDITIONS; THERMAL EQUILIBRIUM; TURBULENCE