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Title: Analytical collisionless damping rate of geodesic acoustic mode

Abstract

Collisionless damping of geodesic acoustic mode (GAM) is analytically investigated by considering the finite-orbit-width (FOW) resonance effect to the 3rd order in the gyro-kinetic equations. Here, a concise and transparent expression for the damping rate is presented for the first time. Good agreement is found between the analytical damping rate and the previous TEMPEST simulation result (Xu 2008 et al Phys. Rev. Lett. 100 215001) for systematic q scans. Our result also shows that it is of sufficient accuracy and has to take into account the FOW effect to the 3rd order.

Authors:
 [1];  [2]
+ Show Author Affiliations
  1. Univ. of Science and Technology of China, Hefei (People's Republic of China)
  2. Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1566007
Report Number(s):
LLNL-JRNL-690159
Journal ID: ISSN 0029-5515; 818069; TRN: US2000954
Grant/Contract Number:  
AC52-07NA27344
Resource Type:
Accepted Manuscript
Journal Name:
Nuclear Fusion
Additional Journal Information:
Journal Volume: 56; Journal Issue: 10; Journal ID: ISSN 0029-5515
Publisher:
IOP Science
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; geodesic acoustic mode; collisionless; Landau damping

Citation Formats

Ren, H., and Xu, X. Q. Analytical collisionless damping rate of geodesic acoustic mode. United States: N. p., 2016. Web. doi:10.1088/0029-5515/56/10/106008.
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Ren, H., & Xu, X. Q. Analytical collisionless damping rate of geodesic acoustic mode. United States. https://doi.org/10.1088/0029-5515/56/10/106008
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Ren, H., and Xu, X. Q. Tue . "Analytical collisionless damping rate of geodesic acoustic mode". United States. https://doi.org/10.1088/0029-5515/56/10/106008. https://www.osti.gov/servlets/purl/1566007.
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@article{osti_1566007,
title = {Analytical collisionless damping rate of geodesic acoustic mode},
author = {Ren, H. and Xu, X. Q.},
abstractNote = {Collisionless damping of geodesic acoustic mode (GAM) is analytically investigated by considering the finite-orbit-width (FOW) resonance effect to the 3rd order in the gyro-kinetic equations. Here, a concise and transparent expression for the damping rate is presented for the first time. Good agreement is found between the analytical damping rate and the previous TEMPEST simulation result (Xu 2008 et al Phys. Rev. Lett. 100 215001) for systematic q scans. Our result also shows that it is of sufficient accuracy and has to take into account the FOW effect to the 3rd order.},
doi = {10.1088/0029-5515/56/10/106008},
journal = {Nuclear Fusion},
number = 10,
volume = 56,
place = {United States},
year = {Tue Aug 09 00:00:00 EDT 2016},
month = {Tue Aug 09 00:00:00 EDT 2016}
}
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Journal Article:
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Publisher's Version of Record
https://doi.org/10.1088/0029-5515/56/10/106008
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Works referenced in this record:

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  • Gao, Zhe; Itoh, K.; Sanuki, H.
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    Works referencing / citing this record:

    Electromagnetic effect on geodesic acoustic mode with adiabatic electrons
    journal, February 2019

    • Huang, Wenlong; Ren, Haijun; Xu, X. Q.
    • Physics of Plasmas, Vol. 26, Issue 2
    • DOI: 10.1063/1.5080271
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