Plasma production by toroidal bounded whistler waves

In a toroidal plasma device bounded whistler waves are excited to produce the high density plasma. This wave is a toroidal counterpart of well known helicon waves. Our experimental results clearly indicate the difference between helicon modes in cylinder and toroidal bounded whistler modes. In the presence of 1.5 kW of radio frequency power at 8.2 MHz and 600 G of maximum toroidal magnetic field, plasma is produced with 5.0 1012 per cc peak electron density and 16 eV average electron temperature. A non-conventional method to drive the plasma current with the same input radio frequency power is discussed. Apart from this, our experimental results on the behavior of time evolution of discharge and optimization of background conditions to get the best efficiency of this non-conventional plasma source for required toroidal plasma applications is also discussed