Enhanced axial loss of electrons from a tandem mirror induced by an Alfvenion cyclotron wave

Increases in the flux and temperature of end-loss electrons are observed fo llowing excitation of an Alfven ion cyclotron (AIC) mode in the GAMMA 10 ta ndem mirror. Electron loss power carried to an end wall becomes more than t wice as large as that without the AIC mode. The increases in the electron f lux and temperature are observed only when the parallel phase velocity of t he AIC mode matches with the electron thermal velocity, strongly suggesting that the parallel electron acceleration is due to electron Landau damping of the AIC mode. [S0031-9007(98)08365-3].