The described plasma source is based on the RF torch discharge. The powered
RF electrode of the torch discharge plasma source is made from the thin me
tal pipe with an inner diameter of 1-2 mm and with a length of several cm.
The working gas (argon pure or with an admixture of reactive components) ho
ws through the RF electrode as the nozzle. The electrode is connected throu
gh the matching unit to the RF generator of the frequency of 13.56 MHz.
The advantage of this described plasma source consists in the fact that the
torch discharge remains stable up to the atmospherical pressure of the wor
king gas even in the liquid environments. Up to now the torch discharge has
been used only for treatment in liquid environment only for archaeological
artefacts. For further applications it is necessary to additional study of
this phenomenon. While in previous papers we presented a measurement of di
fferent temperatures from spectra emitted by plasma, there is drawn attenti
on to equintensity maps inside the nozzle.