Physics
Scientific paper
Aug 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986soph..106..379d&link_type=abstract
Solar Physics (ISSN 0038-0938), vol. 106, Aug. 1986, p. 379-395.
Physics
1
Electron Energy, Microwave Emission, Neutral Sheets, Particle Acceleration, Solar Oscillations, Solar Radio Bursts, Distribution Functions, Magnetohydrodynamic Stability, Plasma Dynamics, Stellar Models
Scientific paper
This paper suggests that fast periodic oscillations in the neutral sheet occur after it is perturbed strongly. An analytic solution of the oscillation process, of which the period T is about 1 ms, is obtained on the basis of the snow-plow model. This dynamical process causes the periodic appearance and disappearance of a diffusive region in the sheet. A time interval δt, during which the diffusive region exists, is about 10-2 - 10-3T. Under the assumption of a relatively weak electric field and the spectrum index ν = 1 of Langmuir turbulence, an analytic solution is obtained of the quasi-linear equation of the distribution function of particles with a periodic electric field. The authors show that the combined acceleration by the electric field and turbulence can produce the periodic streams of energetic electrons. Their energy can reach about 50 keV. These periodic streams of electrons could produce the microwave millisecond spike emission.
Ding Jiu-Ping
Li Hong-Wei
Zhang Cheng-Yue
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