Optical properties of organic material produced in a dusty plasma

Ahmed Mahjoub (1) , Nathalie Carrasco (1) , Pierre-Richard Dahoo (1) , Thomas Gautier (1) , Cyril Szopa (1) , Guy Cernogora (1)

1 PLANETO - LATMOS

Thin films of organic material produced in a dusty plasma in N2-CH4 mixtures are deposited on silicon substrates. The real (n) and imaginary (k) parts of the complex refractive index are determined using the spectroscopic ellipsometry technique in the 370-1000 nm wavelength range. The optical index depend strongly on the methane concentrations: k values decreases with initial CH4 concentration, while the real optical index (n) increases. Thanks to Mid-infrared spectra recorded for thin films, the larger absorption in the visible range is explained by an increase of the secondary and primary amines signatures.

Domaines: Planétologie et astrophysique de la terre [astro-ph.EP]; Planétologie et astrophysique de la terre [astro-ph.EP]; Physique des plasmas [physics.plasm-ph]

Ahmed Mahjoub, Nathalie Carrasco, Pierre-Richard Dahoo, Thomas Gautier, Cyril Szopa, et al.. Optical properties of organic material produced in a dusty plasma. ESCAMPIG 2012 (Europhysics Conference on the Atomic and Molecular Physics of Ionized Gases), Jul 2012, Viana do Castelo, Portugal. 2 p. ⟨hal-00741827⟩