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Space-charge limits in unneutralized relativistic electron beams

Published online by Cambridge University Press:  13 March 2009

M. E. Read  and
J. A. Nation
M. E. Read
Affiliation:
Laboratory of Plasma Studies and School of Electrical Engineering, Cornell University
J. A. Nation
Affiliation:
Laboratory of Plasma Studies and School of Electrical Engineering, Cornell University
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Extract

Limiting currents in annular unneutralized relativistic electron beams are calculated and compared with experiment. The limiting factor for short beams is found to be the space-charge depression of the potential due to the unneutralized beam; in longer beams self-magnetic and electric fields impose a power limit. Typical beam impedances are found to be of the order of 15 Ω with a 350 keV beam. The role of shear in the axial velocity of the beam is discussed.

Type
Articles
Information
Journal of Plasma Physics , Volume 13 , Issue 1 , February 1975 , pp. 127 - 137
Copyright
Copyright © Cambridge University Press 1975

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References

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