Direct radiation from a strong DC electric field

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view Abstract Citations (21) References (7) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Direct Radiation from a Strong DC Electric Field Wentzel, Donat G. Abstract Simulations have shown that a strong dc electric field yields, after electrostatic transients, a beam of electrons that is nearly flat in velocity distribution yet emits strong electrostatic and electromagnetic waves. Electric energy is converted 'directly' into radiation. This radiation is derived analytically in order to learn how the radiation may depend on field strength and beam density in astronomical objects. Any wave with a significant electric component along the dc electric field grows exponentially in time, with the growth rate proportional to the number of electrons in the beam. The lower limits on the dc electric field and the beam density are set by competing plasma processes. The results are related to solar millisecond radio bursts. Publication: The Astrophysical Journal Pub Date: May 1991 DOI: 10.1086/170049 Bibcode: 1991ApJ...373..285W Keywords: Direct Current; Electric Fields; Plasma Radiation; Solar Flares; Solar Radio Bursts; Analytic Functions; Electromagnetic Radiation; Electron Beams; Electrostatic Waves; Velocity Distribution; Solar Physics; PLASMAS; RADIATION MECHANISMS; SUN: FLARES; SUN: RADIO RADIATION full text sources ADS |