Cosmic Rays in a Dynamical Halo. Ii Electrons

We consider the energy spectrum and spatial distribution of electrons in a dynamical halo model of cosmic-ray transport in the Galaxy. We find a gradual steepening of the electron energy spectrum, beginning at everal s0eV energy, as indicated by observations. The decrease of electron density with height in the halo depends on the particle energy and may be much steeper than that for nuclei. Our models give a halo with a scale height 3 kpc for several-0eV electrons, which is shown to be consistent with radio observations. Subject headings: cosmic rays: general galaxies: Milky way - galaxies: structure