Enhanced Diffusion and Oscillations in Weakly Ionized Plasmas

The experiments were performed with a Reflex-type discharge in H/sub 2/, N/sub 2/, and Ar, with pressure, density, and magnetic field conditions variable. The discharge works in continuous mode. The diffusion is measured by means of the escape flux of the ions transverse.to the magnetic field Bo. The measurement is made with a probe external to the plasma, negatively polarized with regard to the plasma potential. The variation of the escape flux is plotted as a function of the magnetic field for different values of the pressure parameter. All curves show three separate regions. Relative variation of the noise-level with the magnetic field at 1000 Mc/sec is also shown. (P.C.H.)