The acceleration of back-scattered beam electrons in a return-current electric field |
| |
Authors: | Marian Karlický |
| |
Affiliation: | (1) Astronomical Institute of the Czech Academy of Sciences, 251 65 Ond ejov, Czech Republic |
| |
Abstract: | Using a 1-D hybrid model of the electron beam bombardment in a flare loop, it is demonstrated that beam electrons, back-scattered in dense layers of the solar atmosphere, are accelerated in the return-current electric field. This effect is shown in two regimes of the electron beam bombardment: (a) with a monoenergetic quasi-steady beam, and (b) with a sequence of 4 pulse beams. It is suggested that the mirroring of electrons at loop magnetic mirrors can amplify this process. The role of such acceleration for the formation of a collisionless return-current, and thus for a decrease of return-current losses, is discussed. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|