On the cascading acceleration of the quasi-thermal electrons by MHD turbulence in solar flares

Authors
Tsap, YT
Citation
Yt. Tsap, On the cascading acceleration of the quasi-thermal electrons by MHD turbulence in solar flares, SOLAR PHYS, 194(1), 2000, pp. 131-136
Citations number
24
Categorie Soggetti
Space Sciences
Journal title
SOLAR PHYSICS
ISSN journal
00380938 → ACNP
Volume
194
Issue
1
Year of publication
2000
Pages
131 - 136
Database
ISI
SICI code
0038-0938(200005)194:1<131:OTCAOT>2.0.ZU;2-A
Abstract
A model of the cascading acceleration of quasi-thermal electrons by MHD tur bulence in solar flares is considered. Analysis shows that fast magnetoacou stic wave modes with large wavenumhers (> 3 x 10(-8) cm(-1)) strongly damp due to ion viscosity for both preflare and flare conditions. The viscous da mping of fast magnetoacoustic wave modes is 10 - 100 times more efficient t han Fermi or transit-time electron acceleration.