Experiment of Linear Turbulent Heating of Plasma

Characteristics of the linear turbulent heating are experimentally studied. From a hydrogen –occluded titanium– washer plasma source a plasma having the density of 1·10 13 ions/cc and the electron temperature of 9.5 eV was injected into a metal tube in a magnetic mirror field, and through the fully ionized plasma a discharge was successively made along the magnetic field lines with the turbulent heating. The diamagnetic measurement shows heated pressures of 1.7·10 16 eV/cc, and the hard X-rays of 20 to 70 keV energies are observed to last for 200µ sec duration. The detection of hard X-rays was found to be very sensitive to the operating condition of the plasma source. As the firing energies of the plasma source decrease, the energies of hard X-rays increase and the observed duration of them increases up to 500µ sec.