Measurements of velocity shear and ion viscosity profile in a magnetohydrodynamic plasma jet
- 1. Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
Description
Time-dependent, two-dimensional profiles of the axial flow velocity, density, electron temperature, and magnetic field components are measured at two axial locations in a screw pinch plasma column of the reconnection scaling experiment. The results show that the ion momentum flux for a given column radius is dissipated by the ion-ion Coulomb scattering viscosity due to a significant radial shear of the axial velocity. By comparing the terms of the magnetohydrodynamic momentum balance equation, radial profile of ion viscosity is determined. Chord-integrated ion temperature measurements performed at several radial locations using Doppler broadening spectroscopy show ion temperature of about 1 eV. Measured ion viscosity agrees within a factor of 2 with the classical Braginskii expectations.
Additional details
Identifiers
- DOI
- 10.1063/1.3478422;
Publishing Information
- Journal Title
- Physics of Plasmas
- Journal Volume
- 17
- Journal Issue
- 10
- Journal Page Range
- p. 102101-102101.8
- ISSN
- 1070-664X
- CODEN
- PHPAEN
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 42015623
- Subject category
- S70: PLASMA PHYSICS AND FUSION TECHNOLOGY;
- Descriptors DEI
- COULOMB SCATTERING; DOPPLER BROADENING; ELECTRON TEMPERATURE; ION TEMPERATURE; IONS; MAGNETIC FIELDS; MAGNETOHYDRODYNAMICS; PLASMA; PLASMA DENSITY; PLASMA DIAGNOSTICS; PLASMA JETS; SCREW PINCH; SHEAR; TIME DEPENDENCE; TWO-DIMENSIONAL CALCULATIONS; VELOCITY; VISCOSITY
- Descriptors DEC
- BASIC INTERACTIONS; CHARGED PARTICLES; ELASTIC SCATTERING; ELECTROMAGNETIC INTERACTIONS; FLUID MECHANICS; HYDRODYNAMICS; INTERACTIONS; LINE BROADENING; MECHANICS; PINCH EFFECT; SCATTERING
Optional Information
- Notes
- (c) 2010 American Institute of Physics