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Title: The mixed Wentzel-Kramers-Brillouin-full-wave approach and its application to lower hybrid wave propagation and absorption

Abstract

The mixed Wentzel-Kramers-Brillouin (WKB)-full-wave approach for the calculation of the 2D mode structure in tokamak plasmas is further developed based on our previous work [A. Cardinali and F. Zonca, Phys. Plasmas 10, 4199 (2003) and Z. X. Lu et al., Phys. Plasmas 19, 042104 (2012)]. A new scheme for theoretical analysis and numerical implementation of the mixed WKB-full-wave approach is formulated, based on scale separation and asymptotic analysis. Besides its capability to efficiently investigate the initial value problem for 2D mode structures and linear stability, in this work, the mixed WKB-full-wave approach is extended to the investigation of radio frequency wave propagation and absorption, e.g., lower hybrid waves. As a novel method, its comparison with other approaches, e.g., WKB and beam tracing methods, is discussed. Its application to lower hybrid wave propagation in concentric circular tokamak plasmas using typical FTU discharge parameters is also demonstrated.

Authors:
 [1];  [2];  [2]
  1. State Key Laboratory of Nuclear Physics and Technology, School of Physics and Fusion Simulation Center, Peking University, Beijing 100871 (China)
  2. Associazione EURATOM-ENEA sulla Fusione, CP 65-00044 Frascati, Roma (Italy)
Publication Date:
OSTI Identifier:
22107666
Resource Type:
Journal Article
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 20; Journal Issue: 3; Other Information: (c) 2013 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1070-664X
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ABSORPTION; ASYMPTOTIC SOLUTIONS; LOWER HYBRID CURRENT DRIVE; LOWER HYBRID HEATING; PLASMA; PLASMA CONFINEMENT; RADIOWAVE RADIATION; TOKAMAK DEVICES; TWO-DIMENSIONAL CALCULATIONS; WAVE PROPAGATION; WKB APPROXIMATION

Citation Formats

Lu, Z. X., Associazione EURATOM-ENEA sulla Fusione, CP 65-00044 Frascati, Roma, Zonca, F., Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027, and Cardinali, A. The mixed Wentzel-Kramers-Brillouin-full-wave approach and its application to lower hybrid wave propagation and absorption. United States: N. p., 2013. Web. doi:10.1063/1.4798408.
Lu, Z. X., Associazione EURATOM-ENEA sulla Fusione, CP 65-00044 Frascati, Roma, Zonca, F., Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027, & Cardinali, A. The mixed Wentzel-Kramers-Brillouin-full-wave approach and its application to lower hybrid wave propagation and absorption. United States. https://doi.org/10.1063/1.4798408
Lu, Z. X., Associazione EURATOM-ENEA sulla Fusione, CP 65-00044 Frascati, Roma, Zonca, F., Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027, and Cardinali, A. Fri . "The mixed Wentzel-Kramers-Brillouin-full-wave approach and its application to lower hybrid wave propagation and absorption". United States. https://doi.org/10.1063/1.4798408.
@article{osti_22107666,
title = {The mixed Wentzel-Kramers-Brillouin-full-wave approach and its application to lower hybrid wave propagation and absorption},
author = {Lu, Z. X. and Associazione EURATOM-ENEA sulla Fusione, CP 65-00044 Frascati, Roma and Zonca, F. and Institute for Fusion Theory and Simulation, Zhejiang University, Hangzhou 310027 and Cardinali, A.},
abstractNote = {The mixed Wentzel-Kramers-Brillouin (WKB)-full-wave approach for the calculation of the 2D mode structure in tokamak plasmas is further developed based on our previous work [A. Cardinali and F. Zonca, Phys. Plasmas 10, 4199 (2003) and Z. X. Lu et al., Phys. Plasmas 19, 042104 (2012)]. A new scheme for theoretical analysis and numerical implementation of the mixed WKB-full-wave approach is formulated, based on scale separation and asymptotic analysis. Besides its capability to efficiently investigate the initial value problem for 2D mode structures and linear stability, in this work, the mixed WKB-full-wave approach is extended to the investigation of radio frequency wave propagation and absorption, e.g., lower hybrid waves. As a novel method, its comparison with other approaches, e.g., WKB and beam tracing methods, is discussed. Its application to lower hybrid wave propagation in concentric circular tokamak plasmas using typical FTU discharge parameters is also demonstrated.},
doi = {10.1063/1.4798408},
url = {https://www.osti.gov/biblio/22107666}, journal = {Physics of Plasmas},
issn = {1070-664X},
number = 3,
volume = 20,
place = {United States},
year = {2013},
month = {3}
}