Beam-plasma discharge in the propagation of a long-pulse relativistic electron beam in a medium-pressure rarefied gas |
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Authors: | M V Gladyshev M G Nikulin |
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Institution: | (1) Radio Engineering Institute, Russian Academy of Sciences, 113519 Moscow, Russia |
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Abstract: | A theoretical model is given, along with a numerical analysis of the evolution of beam-plasma discharge in the propagation
of a long-pulse relativistic electron beam in a rarefied gas at medium pressure. It is shown that the self-stabilization of
beam-plasma discharge as a result of longitudinal inhomogeneity of the density of the discharge plasma makes it possible for
the beam to traverse the beam chamber with relatively low total energy losses, including ionization losses and energy losses
in the generation of oscillations. During the dissociative recombination of electrons and ions of the discharge-driven plasma,
heat is released and spent in raising the temperature of the gas. The investigated collective-discharge mechanism underlying
heating of the gas for a relativistic beam can be more efficient than the classical heating mechanism due to ionization losses
of the beam in pair collisions of its electrons with gas particles.
Zh. Tekh. Fiz. 67, 94–98 (May 1997) |
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