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Title: Does the orbit-averaged theory require a scale separation between periodic orbit size and perturbation correlation length?

Abstract

With the canonical perturbation theory, we demonstrate that the orbit-averaged theory only requires a time-scale separation between equilibrium and perturbed motions and verifies the widely accepted notion that orbit averaging effects greatly reduce the microturbulent transport of energetic particles in a tokamak. Thus, a recent claim [Hauff and Jenko, Phys. Rev. Lett. 102, 075004 (2009); Jenko et al., ibid. 107, 239502 (2011)] stating that the orbit-averaged theory requires a scale separation between equilibrium orbit size and perturbation correlation length is erroneous.

Authors:
 [1];  [2]
  1. Chinese Academy of Sciences (CAS), Beijing (China); Univ. of Science and Technology of China, Hefei (China); Univ. of California, Irvine, CA (United States)
  2. Univ. of California, Irvine, CA (United States); Peking Univ., Beijing (China)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Oak Ridge Leadership Computing Facility (OLCF)
Sponsoring Org.:
USDOE Office of Science (SC), Advanced Scientific Computing Research (ASCR) (SC-21). Scientific Discovery through Advanced Computing (SciDAC); National Natural Science Foundation of China (NNSFC)
OSTI Identifier:
1565166
Resource Type:
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 20; Journal Issue: 10; Journal ID: ISSN 1070-664X
Publisher:
American Institute of Physics (AIP)
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Zhang, Wenlu, and Lin, Zhihong. Does the orbit-averaged theory require a scale separation between periodic orbit size and perturbation correlation length?. United States: N. p., 2013. Web. doi:10.1063/1.4820804.
Zhang, Wenlu, & Lin, Zhihong. Does the orbit-averaged theory require a scale separation between periodic orbit size and perturbation correlation length?. United States. doi:10.1063/1.4820804.
Zhang, Wenlu, and Lin, Zhihong. Thu . "Does the orbit-averaged theory require a scale separation between periodic orbit size and perturbation correlation length?". United States. doi:10.1063/1.4820804. https://www.osti.gov/servlets/purl/1565166.
@article{osti_1565166,
title = {Does the orbit-averaged theory require a scale separation between periodic orbit size and perturbation correlation length?},
author = {Zhang, Wenlu and Lin, Zhihong},
abstractNote = {With the canonical perturbation theory, we demonstrate that the orbit-averaged theory only requires a time-scale separation between equilibrium and perturbed motions and verifies the widely accepted notion that orbit averaging effects greatly reduce the microturbulent transport of energetic particles in a tokamak. Thus, a recent claim [Hauff and Jenko, Phys. Rev. Lett. 102, 075004 (2009); Jenko et al., ibid. 107, 239502 (2011)] stating that the orbit-averaged theory requires a scale separation between equilibrium orbit size and perturbation correlation length is erroneous.},
doi = {10.1063/1.4820804},
journal = {Physics of Plasmas},
number = 10,
volume = 20,
place = {United States},
year = {2013},
month = {10}
}

Journal Article:
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