Calculation of RF sheath properties from surface wave-fields: a post-processing method
Abstract
In ion cyclotron range of frequency (ICRF) experiments in fusion research devices, radio frequency (RF) sheaths form where plasma, strong RF wave fields and material surfaces coexist. These RF sheaths affect plasma material interactions such as sputtering and localized power deposition, as well as the global RF wave fields themselves. RF sheaths may be modeled by employing a sheath boundary condition (BC) in place of the more customary conducting wall BC; however, there are still many ICRF computer codes that do not implement the sheath BC. In this paper we present a method for post-processing results obtained with the conducting wall BC. The post-processing method produces results that are equivalent to those that would have been obtained with the RF sheath BC, under certain assumptions. We found the post-processing method is also useful for verification of sheath BC implementations and as a guide to interpretation and understanding of the role of RF sheaths and their interactions with the waves that drive them.
- Authors:
-
[1];
[2]
- Lodestar Research Corporation, Boulder, CO (United States)
- Kyushu Inst. of Technology, Iizuka, Fukuoka (Japan)
- Publication Date:
- Research Org.:
- Lodestar Research Corp., Boulder, CO (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC); Univ. of California, Oakland, CA (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Fusion Energy Sciences (FES); Japan Society for the Promotion of Science (JSPS); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
- OSTI Identifier:
- 1593817
- Report Number(s):
- ORNL-4000158507-3; DOE-ER-54392-94; LRC-19-180
Journal ID: ISSN 0741-3335; LRC-19-180; TRN: US2102024
- Grant/Contract Number:
- AC05-00OR22725; JP16K18336; AC02- 05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Plasma Physics and Controlled Fusion
- Additional Journal Information:
- Journal Volume: 61; Journal Issue: 9; Related Information: http://doi.org/10.5281/zenodo.3255075; Journal ID: ISSN 0741-3335
- Publisher:
- IOP Science
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 70 PLASMA PHYSICS AND FUSION TECHNOLOGY; plasma; radio frequency; ICRF; sheath; tokamak
Citation Formats
Myra, J. R., and Kohno, H. Calculation of RF sheath properties from surface wave-fields: a post-processing method. United States: N. p., 2019.
Web. doi:10.1088/1361-6587/ab2f41.
Myra, J. R., & Kohno, H. Calculation of RF sheath properties from surface wave-fields: a post-processing method. United States. https://doi.org/10.1088/1361-6587/ab2f41
Myra, J. R., and Kohno, H. Tue .
"Calculation of RF sheath properties from surface wave-fields: a post-processing method". United States. https://doi.org/10.1088/1361-6587/ab2f41. https://www.osti.gov/servlets/purl/1593817.
@article{osti_1593817,
title = {Calculation of RF sheath properties from surface wave-fields: a post-processing method},
author = {Myra, J. R. and Kohno, H.},
abstractNote = {In ion cyclotron range of frequency (ICRF) experiments in fusion research devices, radio frequency (RF) sheaths form where plasma, strong RF wave fields and material surfaces coexist. These RF sheaths affect plasma material interactions such as sputtering and localized power deposition, as well as the global RF wave fields themselves. RF sheaths may be modeled by employing a sheath boundary condition (BC) in place of the more customary conducting wall BC; however, there are still many ICRF computer codes that do not implement the sheath BC. In this paper we present a method for post-processing results obtained with the conducting wall BC. The post-processing method produces results that are equivalent to those that would have been obtained with the RF sheath BC, under certain assumptions. We found the post-processing method is also useful for verification of sheath BC implementations and as a guide to interpretation and understanding of the role of RF sheaths and their interactions with the waves that drive them.},
doi = {10.1088/1361-6587/ab2f41},
journal = {Plasma Physics and Controlled Fusion},
number = 9,
volume = 61,
place = {United States},
year = {2019},
month = {7}
}
Free Publicly Available Full Text
Publisher's Version of Record
Other availability
Search WorldCat to find libraries that may hold this journalFigures / Tables:
Fig. 1: Geometry for the solution of Maxwell’s equations. The unit normal pointing from the surface into the plasma is s, and t1 is the unit vector along the surface in the x-y plane. The equilibrium magnetic field direction is b = ex.
All figures and tables
(9 total)
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.
Works referenced in this record:
Instability of the sheath-plasma resonance
journal, February 1988
- Stenzel, R. L.
- Physical Review Letters, Vol. 60, Issue 8
Self consistent radio-frequency wave propagation and peripheral direct current plasma biasing: Simplified three dimensional non-linear treatment in the “wide sheath” asymptotic regime
journal, September 2012
- Colas, L.; Jacquot, J.; Heuraux, S.
- Physics of Plasmas, Vol. 19, Issue 9
Nonlinear plasma sheath potential in the ASDEX Upgrade 3-strap antenna: a parameter scan
journal, August 2017
- Tierens, W.; Jacquot, J.; Bobkov, V.
- Nuclear Fusion, Vol. 57, Issue 11
Physics-based parametrization of the surface impedance for radio frequency sheaths
journal, July 2017
- Myra, J. R.
- Physics of Plasmas, Vol. 24, Issue 7
Radiofrequency sheaths and impurity generation by ICRF antennas
journal, April 1989
- Perkins, F. W.
- Nuclear Fusion, Vol. 29, Issue 4
ICRF-enhanced plasma potentials in the SOL of Alcator C-Mod
journal, December 2013
- Ochoukov, R.; Whyte, D. G.; Brunner, D.
- Plasma Physics and Controlled Fusion, Vol. 56, Issue 1
Radio frequency sheaths in an oblique magnetic field
journal, June 2015
- Myra, J. R.; D'Ippolito, D. A.
- Physics of Plasmas, Vol. 22, Issue 6
Experimental Observation of Convective Cell Formation due to a Fast Wave Antenna in the Large Plasma Device
journal, November 2017
- Martin, M. J.; Gekelman, W.; Van Compernolle, B.
- Physical Review Letters, Vol. 119, Issue 20
Hot spot phenomena on Tore Supra ICRF antennas investigated by optical diagnostics
journal, December 2002
- Colas, L.; Costanzo, L.; Desgranges, C.
- Nuclear Fusion, Vol. 43, Issue 1
Radio frequency wave interactions with a plasma sheath: The role of wave and plasma sheath impedances
journal, May 2019
- Myra, J. R.; Kohno, H.
- Physics of Plasmas, Vol. 26, Issue 5
Characterization and performance of a field aligned ion cyclotron range of frequency antenna in Alcator C-Mod
journal, May 2013
- Wukitch, S. J.; Garrett, M. L.; Ochoukov, R.
- Physics of Plasmas, Vol. 20, Issue 5
Progress on ion cyclotron range of frequencies heating physics and technology in support of the International Tokamak Experimental Reactor
journal, November 2014
- Wilson, J. R.; Bonoli, P. T.
- Physics of Plasmas, Vol. 22, Issue 2
Characterization of heat flux generated by ICRH heating with cantilevered bars and a slotted box Faraday screen
journal, August 2012
- Corre, Y.; Firdaouss, M.; Colas, L.
- Nuclear Fusion, Vol. 52, Issue 10
Radio-frequency wave interactions with a plasma sheath in oblique-angle magnetic fields using a sheath impedance model
journal, February 2019
- Kohno, H.; Myra, J. R.
- Physics of Plasmas, Vol. 26, Issue 2
Plasma Resonance in a Radio-Frequency Probe
journal, September 1960
- Takayama, K.; Ikegami, H.; Miyazaki, S.
- Physical Review Letters, Vol. 5, Issue 6
Ion cyclotron resonance frequency heating in JET during initial operations with the ITER-like wall
journal, June 2014
- Jacquet, P.; Bobkov, V.; Colas, L.
- Physics of Plasmas, Vol. 21, Issue 6
Edge plasma density convection during ion cyclotron resonance heating on Tore Supra
journal, June 2002
- Bécoulet, M.; Colas, L.; Pécoul, S.
- Physics of Plasmas, Vol. 9, Issue 6
Radio‐frequency‐sheath‐driven edge plasma convection and interaction with the H mode
journal, October 1993
- D’Ippolito, D. A.; Myra, J. R.; Jacquinot, J.
- Physics of Fluids B: Plasma Physics, Vol. 5, Issue 10
Radio-frequency sheaths physics: Experimental characterization on Tore Supra and related self-consistent modeling
journal, June 2014
- Jacquot, Jonathan; Milanesio, Daniele; Colas, Laurent
- Physics of Plasmas, Vol. 21, Issue 6
Power deposition in high‐density inductively coupled plasma tools for semiconductor processing
journal, June 1995
- Jaeger, E. F.; Berry, L. A.; Tolliver, J. S.
- Physics of Plasmas, Vol. 2, Issue 6
Characterization of SOL plasma flows and potentials in ICRF-heated plasmas in Alcator C-mod
journal, August 2017
- Hong, R.; Wukitch, S. J.; Lin, Y.
- Plasma Physics and Controlled Fusion, Vol. 59, Issue 10
Quantitative modeling of ICRF antennas with integrated time domain RF sheath and plasma physics
conference, January 2014
- Smithe, David N.; D'Ippolito, Daniel A.; Myra, James R.
- RADIOFREQUENCY POWER IN PLASMAS: Proceedings of the 20th Topical Conference, AIP Conference Proceedings
The role of rectified currents in far-field RF sheaths and in SOL losses of HHFW power on NSTX
journal, August 2017
- Perkins, R. J.; Hosea, J. C.; Jaworski, M. A.
- Nuclear Materials and Energy, Vol. 12
Spatial proximity effects on the excitation of sheath RF voltages by evanescent slow waves in the ion cyclotron range of frequencies
journal, January 2017
- Colas, Laurent; Lu, Ling-Feng; Křivská, Alena
- Plasma Physics and Controlled Fusion, Vol. 59, Issue 2
The interaction between waves in the ion cyclotron range of frequencies and the plasma boundary
journal, November 1993
- Noterdaeme, J. -M; Oost, G. Van
- Plasma Physics and Controlled Fusion, Vol. 35, Issue 11
Faraday screen sheaths and impurity production during ion cyclotron heating
journal, May 1990
- Myra, J. R.; D'Ippolito, D. A.; Gerver, M. J.
- Nuclear Fusion, Vol. 30, Issue 5
Radio-frequency sheath-plasma interactions with magnetic field tangency points along the sheath surface
journal, August 2013
- Kohno, H.; Myra, J. R.; D'Ippolito, D. A.
- Physics of Plasmas, Vol. 20, Issue 8
Numerical analysis of radio-frequency sheath-plasma interactions in the ion cyclotron range of frequencies
journal, January 2012
- Kohno, H.; Myra, J. R.; D’Ippolito, D. A.
- Physics of Plasmas, Vol. 19, Issue 1
Making ICRF power compatible with a high-Z wall in ASDEX Upgrade
journal, October 2016
- Bobkov, V.; Aguiam, D.; Bilato, R.
- Plasma Physics and Controlled Fusion, Vol. 59, Issue 1
A post-processing method to simulate the generalized RF sheath boundary condition
journal, January 2017
- Myra, James R.; Kohno, Haruhiko
- EPJ Web of Conferences, Vol. 157
A radio-frequency sheath boundary condition and its effect on slow wave propagation
journal, October 2006
- D’Ippolito, D. A.; Myra, J. R.
- Physics of Plasmas, Vol. 13, Issue 10
A finite element procedure for radio-frequency sheath–plasma interactions based on a sheath impedance model
journal, November 2017
- Kohno, H.; Myra, J. R.
- Computer Physics Communications, Vol. 220
ICRF-enhanced plasma potentials in the SOL of Alcator C-Mod
conference, January 2014
- Ochoukov, R.; Whyte, D. G.; Brunner, D.
- RADIOFREQUENCY POWER IN PLASMAS: Proceedings of the 20th Topical Conference, AIP Conference Proceedings
A Post-Processing Method To Simulate The Generalized Rf Sheath Boundary Condition
text, January 2017
- Myra, J. R.; Kohno, H.
- Zenodo
Radio-frequency wave interactions with a plasma sheath in oblique-angle magnetic fields using a sheath impedance model
text, January 2018
- Kohno, H.; Myra, J. R.
- Zenodo
Radio frequency wave interactions with a plasma sheath: the role of wave and plasma sheath impedances
text, January 2018
- Myra, J. R.; Kohno, H.
- Zenodo
Spatial proximity effects on the excitation of Sheath RF Voltages by evanescent Slow Waves in the Ion Cyclotron Range of Frequencies
text, January 2017
- Colas, Laurent; Lu, Ling-Feng; Křivská, Alena
- arXiv
Figures / Tables found in this record:
Figures/Tables have been extracted from DOE-funded journal article accepted manuscripts.