By Topic

Ion current produced by a vacuum arc carbon plasma source

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
$31 $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

5 Author(s)
Zhitomirsky, V.N. ; Fleischman Fac. of Eng., Tel Aviv Univ., Israel ; Zarchin, O. ; She-Guan Wang ; Boxman, R.L.
more authors

A vacuum arc carbon plasma source is described, in which an arc was ignited between a cathode and an anode having In aperture, by bringing the two electrodes into contact, and parting them while current was flowing. The inter-electrode gap length was varied. A focusing magnetic field was applied in the inter-electrode gap, and a toroidal magnetic field was applied to guide plasma through a toroidal duct. The influence of the arc current (Iarc), gap length (L), and focusing magnetic field (Bf) on the cathode spot motion, plasma behavior, and output ion current was studied. It was shown that with Iarc=150-250 A and relatively weak Bf, the spots moved on the cathode periphery, causing noisy arcing and fluctuation of the output ion current, while at a lower Iarc (50-100 A) and strong Bf (⩾28 mT), there were fewer spots on the cathode surface, they tended to move toward the cathode center, the arc noise decreased and the average output ion current increased. With increasing L from 2 to 18 mm, the total ion current at first rapidly increased, and then saturated at L⩾10 mm. Best performance of the carbon plasma source was obtained with an arc current chosen so that with a given field configuration, the cathode spots locate in the center of the cathode surface, and with strong magnetic fields in both the electrode and toroidal filter regions

Published in:

Plasma Science, IEEE Transactions on  (Volume:29 ,  Issue: 5 )