Open AccessFormation of dust in low-pressure magnetized hydrocarbon plasmas
Author(s) -
L. Laguardia,
A. Cremona,
M. De Angeli,
E. Lazzaro,
S. Ratynskaia,
M. Passoni,
David Dellasega,
G. Gervasini,
G. Grosso,
R. Schiavone,
E. Vassallo
Publication year - 2011
Publication title -
new journal of physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.584
H-Index - 190
ISSN - 1367-2630
DOI - 10.1088/1367-2630/13/6/063006
Subject(s) - physics , plasma , hydrocarbon , atomic physics , residence time (fluid dynamics) , range (aeronautics) , production rate , gas phase , nuclear physics , thermodynamics , chemistry , materials science , organic chemistry , industrial engineering , geotechnical engineering , engineering , composite material
The rapid formation of large molecules and the subsequentproduction 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