Formation of dust in low-pressure magnetized hydrocarbon plasmas

Details Formation of dust in low-pressure magnetized hydrocarbon plasmas Formation of dust in low-pressure magnetized hydrocarbon plasmas

Jun 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011njph...13f3006l&link_type=abstract

New Journal of Physics, Volume 13, Issue 6, pp. 063006 (2011).

Physics

Scientific paper

The rapid formation of large molecules and the subsequent production of solid-state dust particles in a low-pressure discharge is unlikely, because of the low rates of the polymerization reactions and short lifetimes of the species. Here, we suggest that C dust particles can form in atypically low (10- 3 mbar)-pressure hydrocarbon plasmas if the dust charging time is much shorter than the gas residence time in the device; we present supporting experimental evidence for this. Such a condition can be obtained by the production of high-density plasmas. The results show that dust formation from the gaseous phase can occur in a much wider parameter range than is commonly assumed.

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