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Magnetic focusing of an intense microsecond relativistic electron beam

Published online by Cambridge University Press:  09 March 2009

V. V. Chikunov ,
B. A. Knyazev ,
V. S. Koidan ,
V. V. Konyukhov ,
S. V. Lebedev ,
K. I. Mekler ,
M. A. Shcheglov  and
S. G. Voropajev
V. V. Chikunov
Affiliation:
Institute of Nuclear Physics, Siberian Division of the USSR Academy of Sciences, 630090 Novosibirsk, USSR
B. A. Knyazev
Affiliation:
Institute of Nuclear Physics, Siberian Division of the USSR Academy of Sciences, 630090 Novosibirsk, USSR
V. S. Koidan
Affiliation:
Institute of Nuclear Physics, Siberian Division of the USSR Academy of Sciences, 630090 Novosibirsk, USSR
V. V. Konyukhov
Affiliation:
Institute of Nuclear Physics, Siberian Division of the USSR Academy of Sciences, 630090 Novosibirsk, USSR
S. V. Lebedev
Affiliation:
Institute of Nuclear Physics, Siberian Division of the USSR Academy of Sciences, 630090 Novosibirsk, USSR
K. I. Mekler
Affiliation:
Institute of Nuclear Physics, Siberian Division of the USSR Academy of Sciences, 630090 Novosibirsk, USSR
M. A. Shcheglov
Affiliation:
Institute of Nuclear Physics, Siberian Division of the USSR Academy of Sciences, 630090 Novosibirsk, USSR
S. G. Voropajev
Affiliation:
Institute of Nuclear Physics, Siberian Division of the USSR Academy of Sciences, 630090 Novosibirsk, USSR
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Abstract

Experimental results are presented on the focusing of an intense microsecond relativistic electron beam. The beam is generated in a high-voltage quasi-planar diode (E = 600–800 keV, τ = 3–5 μsec). It is then magnetically – focused by longitudinal injection into a magnetic mirror. The total energy of the beam is about 50 kJ. The focusing chamber is filled with argon under a pressure varying from 3 × 10−5 to 1 torr. The results include investigations of beam focusing under various conditions, the dynamics of the return current in the plasma as well as the influence of the reflected beam electrons on the operation of the accelerator diode. A 20-fold focused beam with a 4 cm diameter, 46 kJ energy content, and current density up to 3 kA/cm2 was obtained.

Type
Research Article
Information
Laser and Particle Beams , Volume 3 , Issue 3 , August 1985 , pp. 259 - 262
Copyright
Copyright © Cambridge University Press 1985

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