Author/Authors :
Aurelian Buzaianu، نويسنده , , Madalina D. and Makarov، نويسنده , , Vladimir I. and Morell، نويسنده , , Gerardo and Weiner، نويسنده , , Brad R.، نويسنده ,
Abstract :
The SH and CS radicals produced during sulfur-assisted hot filament chemical vapor deposition (HFCVD) were studied by cavity ringdown spectroscopy (CRDS) by detecting the A(0) ← X(0) transition near 323 and 259 nm, for SH and CS, respectively. CRDS is a non-intrusive spectroscopic diagnostic tool suitable for measuring trace amounts of gas species in hostile, reactive environments such as that of chemical vapor deposition (CVD). The SH and CS radicals are thought to play important roles in the gas-phase and heterogeneous chemistry of sulfur-assisted HFCVD synthesis of nano-structured carbon-based materials. A detailed analysis of the rotationally resolved SH and CS spectra led to an estimate of their effective rotational temperature and number density.
