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Title: Physics-based parametrization of the surface impedance for radio frequency sheaths

The properties of sheaths near conducting surfaces are studied for the case where both magnetized plasma and intense radio frequency (rf) waves coexist. The work is motivated primarily by the need to understand, predict and control ion cyclotron range of frequency (ICRF) interactions with tokamak scrape-off layer plasmas, and is expected to be useful in modeling rf sheath interactions in global ICRF codes. Here, employing a previously developed model for oblique angle magnetized rf sheaths [J. R. Myra and D. A. D’Ippolito, Phys. Plasmas 22, 062507 (2015)], an investigation of the four-dimensional parameter space governing these sheath is carried out. By combining numerical and analytical results, a parametrization of the surface impedance and voltage rectification for rf sheaths in the entire four-dimensional space is obtained.
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  1. Lodestar Research Corporation, Boulder, CO (United States)
Publication Date:
Report Number(s):
DOE-ER/-54823-19; LRC-17-170
Journal ID: ISSN 1070-664X
Grant/Contract Number:
FC02-05ER54823; FG02-97ER54392
Accepted Manuscript
Journal Name:
Physics of Plasmas
Additional Journal Information:
Journal Volume: 24; Journal Issue: 7; Journal ID: ISSN 1070-664X
American Institute of Physics (AIP)
Research Org:
Lodestar Research Corp., Boulder, CO (United States)
Sponsoring Org:
USDOE Office of Science (SC), Fusion Energy Sciences (FES) (SC-24)
Country of Publication:
United States
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; radio-frequency; sheath; impedance; rectification; magnetized; ICRF; tokamak
OSTI Identifier:
Alternate Identifier(s):
OSTI ID: 1368600