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Title: Spitzer or neoclassical resistivity: A comparison between measured and model poloidal field profiles on PBX-M

Abstract

Direct measurements of the radial profile of the magnetic field line pitch on PBX-M (Phys. Fluids B {bold 2}, 1271 (1990)), coupled with model predictions of these profiles allow a critical comparison with the Spitzer and neoclassical models of plasma parallel resistivity. The measurements of the magnetic field line pitch are made by motional Stark effect polarimetry, while the model profiles are determined by solving the poloidal field diffusion equation in the TRANSP transport code using measured plasma profiles and assuming either Spitzer or neoclassical resistivity. The measured field pitch profiles were available for only seven cases, and the model profiles were distinguishable from each other in only three of those cases due to finite resistive diffusion times. The data in two of these three were best matched by the Spitzer model, especially in the inner-half of the plasma. Portions of the measured pitch profiles for these two cases and the full profiles for other cases, however, departed significantly from both the Spitzer and neoclassical models, indicating a plasma resistivity profile different from either model.

Authors:
; ; ; ; ; ; ;  [1]
  1. Princeton Plasma Physics Laboratory, Princeton University, Princeton, New Jersey 08543 (United States)
Publication Date:
OSTI Identifier:
7205659
DOE Contract Number:  
AC02-76CH03073
Resource Type:
Journal Article
Journal Name:
Physics of Fluids B; (United States)
Additional Journal Information:
Journal Volume: 4:3; Journal ID: ISSN 0899-8221
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; PDX DEVICES; NEOCLASSICAL TRANSPORT THEORY; BALLOONING INSTABILITY; CURRENT DENSITY; DIFFUSION; HYDROGEN; MAGNETIC FIELD CONFIGURATIONS; MAGNETOHYDRODYNAMICS; PLASMA CONFINEMENT; PLASMA INSTABILITY; POLARIMETRY; SPITZER THEORY; STARK EFFECT; TOKAMAK DEVICES; TOROIDAL CONFIGURATION; ANNULAR SPACE; CLOSED CONFIGURATIONS; CLOSED PLASMA DEVICES; CONFIGURATION; CONFINEMENT; ELEMENTS; FLUID MECHANICS; HYDRODYNAMICS; INSTABILITY; MECHANICS; NONMETALS; PLASMA MACROINSTABILITIES; SPACE; THERMONUCLEAR DEVICES; TRANSPORT THEORY; 700330* - Plasma Kinetics, Transport, & Impurities- (1992-); 700370 - Plasma Fluid & MHD Properties- (1992-)

Citation Formats

Kaye, S M, Levinton, F M, Hatcher, R, Kaita, R, Kessel, C, LeBlanc, B, McCune, D C, and Paul, S. Spitzer or neoclassical resistivity: A comparison between measured and model poloidal field profiles on PBX-M. United States: N. p., 1992. Web. doi:10.1063/1.860263.
Kaye, S M, Levinton, F M, Hatcher, R, Kaita, R, Kessel, C, LeBlanc, B, McCune, D C, & Paul, S. Spitzer or neoclassical resistivity: A comparison between measured and model poloidal field profiles on PBX-M. United States. https://doi.org/10.1063/1.860263
Kaye, S M, Levinton, F M, Hatcher, R, Kaita, R, Kessel, C, LeBlanc, B, McCune, D C, and Paul, S. 1992. "Spitzer or neoclassical resistivity: A comparison between measured and model poloidal field profiles on PBX-M". United States. https://doi.org/10.1063/1.860263.
@article{osti_7205659,
title = {Spitzer or neoclassical resistivity: A comparison between measured and model poloidal field profiles on PBX-M},
author = {Kaye, S M and Levinton, F M and Hatcher, R and Kaita, R and Kessel, C and LeBlanc, B and McCune, D C and Paul, S},
abstractNote = {Direct measurements of the radial profile of the magnetic field line pitch on PBX-M (Phys. Fluids B {bold 2}, 1271 (1990)), coupled with model predictions of these profiles allow a critical comparison with the Spitzer and neoclassical models of plasma parallel resistivity. The measurements of the magnetic field line pitch are made by motional Stark effect polarimetry, while the model profiles are determined by solving the poloidal field diffusion equation in the TRANSP transport code using measured plasma profiles and assuming either Spitzer or neoclassical resistivity. The measured field pitch profiles were available for only seven cases, and the model profiles were distinguishable from each other in only three of those cases due to finite resistive diffusion times. The data in two of these three were best matched by the Spitzer model, especially in the inner-half of the plasma. Portions of the measured pitch profiles for these two cases and the full profiles for other cases, however, departed significantly from both the Spitzer and neoclassical models, indicating a plasma resistivity profile different from either model.},
doi = {10.1063/1.860263},
url = {https://www.osti.gov/biblio/7205659}, journal = {Physics of Fluids B; (United States)},
issn = {0899-8221},
number = ,
volume = 4:3,
place = {United States},
year = {Sun Mar 01 00:00:00 EST 1992},
month = {Sun Mar 01 00:00:00 EST 1992}
}