Speaker
Description
Sources of dense plasma fluxes with wide aperture
are extensively used in applied science, i.e. surface
treatment, and as a part of neutral beam injectors.
ECR discharge in a solenoidal magnetic field (i.e. with
no magnetic mirrors for plasma confinement),
sustained by a powerful radiation of modern
gyrotrons is under consideration at IAP RAS as a
possible alternative to widely used vacuum arc, RF
and helicon discharges. The use of a high frequency
radiation (37.5 GHz) allows to obtain a discharge at
lower pressure, sustain almost fully ionized plasma
with density more than 10^13 cm^-3, whereas the
power on the level of several hundreds of kW allows
one to create such a plasma in considerably large
volume. In the present work fluxes of hydrogen
plasma with the equivalent current density of 750
mA/cm2 and the total current of 5 A were obtained. A
multi-aperture multi-electrode extraction system
design capable of forming the non-divergent ion
beam was developed with the use of IBSimu code.