By Topic

Influence of an axial magnetic field on the electron temperature in a vacuum arc plasma

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$33 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

4 Author(s)
M. Galonska ; Gesellschaft fur Schwerionenforschung mbH, Darmstadt, Germany ; R. Hollinger ; I. A. Krinberg ; P. Spaedtke

The influence of an axial magnetic field on the electron temperature of a vacuum arc plasma was studied experimentally and theoretically for moderate discharge currents of 400-600 A, magnetic flux densities of 0-50 mT, and various cathode materials such as uranium, titanium, and carbon. Experiments were performed using the vacuum arc ion source (VARIS) and the electron energy spectra were measured with a 127° electrostatic cylinder spectrometer. The electron temperature in the inter-electrode gap of a vacuum arc was calculated from an energy balance equation that was supplemented by an magnetohydrodynamic approach of the plasma flow. The plasma flow is constricted by an external axial magnetic field instead of the free spherical plasma flow in its absence, leading to an increase in the electron temperature. The influence of different input parameters such as the magnetic flux density, arc current, the ion to arc current ratio, the initial plasma jet radius, and the distance from the cathode on the electron temperature was studied and compared with the experimental results.

Published in:

IEEE Transactions on Plasma Science  (Volume:33 ,  Issue: 5 )