Experimental characterization and modelling of the particle source in an Electron-Cyclotron wave driven toroidal plasma

The plasma particle source resulting from ionization by microwaves in the electron-cyclotron range of frequencies is investigated in the simple magnetized torus TORPEX ( Fasoli A et al 2006 Phys. Plasmas 13 055902), together with its dependence upon experimental parameters, such as the absorbed microwave power, the magnetic field configuration and the neutral gas pressure. The relative contributions to the ionization rate from thermal electrons and from suprathermal electrons accelerated at the plasma resonances are quantified through a global particle balance. An expression for the spatial profile of the particle source is derived from the experimental results and a simple numerical code.


Published in:
Plasma Physics and Controlled Fusion, 48, 8, 1053-1062
Year:
2006
ISSN:
0741-3335
ISBN:
0741-3335
Laboratories:
SPC
CRPP




 Record created 2008-04-16, last modified 2018-07-07


Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)