Physics
Scientific paper
Oct 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010phpl...17j2101d&link_type=abstract
Physics of Plasmas, Volume 17, Issue 10, pp. 102101-102101-8 (2010).
Physics
2
Pinch Effect, Plasma Collision Processes, Plasma Density, Plasma Diagnostics, Plasma Jets, Plasma Magnetohydrodynamics, Plasma Temperature, Plasma Transport Processes, Transport Properties, Magnetohydrodynamics, Plasma Dynamics And Flow, Laboratory Studies Of Space- And Astrophysical-Plasma Processes
Scientific paper
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.
Dorf L. A.
Furno Ivo
Hendryx J.
Intrator Thomas
Lapenta Giovanni
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