Abstract
The instability of a decelerating electron flow injected into a planar diode has been studied using the results of experiments and the exact solution of a system of inhomogeneous hydrodynamic equations formulated in the first-order approximation of the theory of stability. A dispersion equation is obtained that relates the frequencies and increments (decrements) of the arising electromagnetic oscillations to the electron flux parameters and the diode characteristics. A solution of this dispersion equation shows that a diode, in which the decelerating electron flow is propagating, features a previously undescribed instability of oscillations in the microwave range. This instability takes place in cases where no potential minimum is formed in the diode in a stationary state. The development of the instability of oscillations with theoretically predicted frequencies and increments has been confirmed in experiments.
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A. V. Pashchenko and B. N. Rutkevich, Fiz. Plazmy, No. 3, 774 (1977) [Plasma Phys. Rep., No. 3, 437 (1977).
I. I. Magda, V. E. Novikov, A. V. Pashchenko, S. S. Romanov, and I. M Shapoval, Vopr. Atom. Nauki Tekh. 6, 167 (2003).
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Original Russian Text © A.V. Pashchenko, V.M. Zalkind, Yu.F. Lonin, O.G. Melezhik, S.S. Romanov, D.A. Sitnikov, I.K. Tarasov, M.I. Tarasov, I.N. Shapoval, V.E. Novikov, V.A. Yatsyshin, 2008, published in Pis’ma v Zhurnal Tekhnicheskoĭ Fiziki, 2008, Vol. 34, No. 24, pp. 83–89.
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Pashchenko, A.V., Zalkind, V.M., Lonin, Y.F. et al. Instability of decelerating electron flow injected into a planar diode. Tech. Phys. Lett. 34, 1079–1081 (2008). https://doi.org/10.1134/S1063785008120274
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DOI: https://doi.org/10.1134/S1063785008120274