Gas temperature effect on the time for onset of particle nucleation in   argon diluted acetylene plasma
  In our work we are focused on study of powder formation in C2H2/Ar plasmas. In this scope we used a combination of FTIR and mass spectroscopy, which are the mostly used experimental techniques for plasma powder formation diagnostics. To test the proposed mechanism for particle nucleation delay we measured the particle nucleation under different plasma conditions: firstly we increased the gas temperature and secondly we changed the background gas from argon to helium. 
Ilija Stefanovic, Eva Kovacevic, Johannes Berndt, Jorg Winter