title: Scattering of magnetic mirror trapped fast electrons by a shear Alfvén wave.
abstract: Laboratory observations of enhanced loss of fast electrons trapped in a magnetic mirror geometry irradiated by shear Alfvén waves (SAW) are reported. A population of runaway electrons generated by second harmonic electron-cyclotron-resonance heating, as evidenced by the production of hard x rays with energy up to 3 MeV, is subjected to SAW launched with a rotating magnetic field antenna. It is observed that the SAW dramatically affect the trapped fast electrons and scatter them out of the magnetic mirror despite any obvious resonance. The results could have implications on the techniques of artificial reduction of energetic electrons in the inner radiation belt.
authors.affiliation: Department of Physics and Astronomy, University of California-Los Angeles, Los Angeles, California 90095, USA.
authors.forename: Yuhou
authors.initials: Y
authors.lastname: Wang
authors.forename: Walter
authors.initials: W
authors.lastname: Gekelman
authors.forename: Patrick
authors.initials: P
authors.lastname: Pribyl
authors.forename: Konstantinos
authors.initials: K
authors.lastname: Papadopoulos