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- W46642593 abstract "In the present work we propose a macroscopic mechanism for producing low-frequency oscillations. If beam energy losses increase as a function of gas density at a rate faster than linear, then the gas temperature will increase with density and self-oscillations involving an interaction between the beam and the gas can arise. When the gas density deviates from its equilibrium value in the region where the beam is propagating, the temperature and pressure in this region change, which causes the heated gas to flow out of the heating region into the colder surrounding medium. Because of the inertia of the gas the latter overshoots the equilibrium position, and the process then goes in the opposite direction. If the rate of change of the pressure as a function of density in the region where the beam is propagating is large enough, then the equilibrium position can become unstable. Consequently, density self-oscillations develop and the beam loses energy, which will manifest itself as modulation of the current at the collector." @default.
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- W46642593 date "1992-06-01" @default.
- W46642593 modified "2023-09-24" @default.
- W46642593 title "Self-oscillations resulting from the passage of an electron beam through a neutral gas" @default.
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