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Ferroelectric plasma cathode with a control grid

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4 Author(s)
Dunaevsky, A. ; Department of Physics, Technion-Israel Institute of Technology, 32000 Haifa, Israel ; Krasik, Y.E. ; Felsteiner, J. ; Sternlieb, A.

Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.1425422 

Experimental results of high-current electron beam generation in a planar diode with a ferroelectric plasma cathode and a control grid are presented. The plasma is formed as a result of noncomplete discharge on the surface of a BaTiO3 sample when a driving pulse is applied to its rear electrode. This noncomplete surface discharge leads also to the appearance of fast plasma flows which fill the anode–cathode gap prior to the application of the accelerating electric field. The measured plasma densities and flow velocities allow us to estimate the bias potential of the control grid which is needed for the suppression of the plasma flows. The dependence of the plasma density on the grid potential is presented. Using the control grid, operation of the diode with the ferroelectric plasma cathode is achieved with negligible plasma prefilling of the anode–cathode gap. © 2002 American Institute of Physics.

Published in:

Journal of Applied Physics  (Volume:91 ,  Issue: 3 )

Date of Publication:

Feb 2002

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