Energy spectra of particles accelerated in a reconnecting current sheet with the guiding magnetic field

摘要: Electron and proton acceleration by a super-Dreicer electric field is investigated in the nonneutral reconnecting current sheet (RCS) with non-zero longitudinal component of magnetic (‘guiding field’). The guiding assumed parallel to direction constant within an RCS. other two components, transverse tangential, are considered vary distances from X null point electron energy spectra calculated numerically motion equation using test particle approach for model RCSs variable densities. In presence strong or moderate field, protons were found fully partially separated electrons at ejection RCS into opposite, ‘electron’ ‘proton’, semiplanes. case weak both ejected symmetrically equal proportions as neutral beams. particles very have power-law spectral indices about 1.5 2.0 electrons. For opposite semiplanes mixed, i.e. ‘electron-dominated’ semiplane thermal-like protons, while ‘proton’ they