Measurement and modeling of a diamond deposition reactor: Hydrogen atom and electron number densities in an Ar/H 2 arc jet discharge

The gas-phase chemistry underpinning the growth of polycrystalline diamond in a dc arc jet reactor operating with a CH 4/H 2/Ar mixture was analyzed. A combination of optical emission and cavity ring-down spectroscopy (CRBS) of electronically excited hydrogen atoms and two-dimensional modeling was u...

Полное описание

Библиографические подробности
Главные авторы: Rennick, C, Engeln, R, Smith, J, Orr-Ewing, A, Ashfold, M, Mankelevich, Y
Формат: Journal article
Язык:English
Опубликовано: 2005
Описание
Итог:The gas-phase chemistry underpinning the growth of polycrystalline diamond in a dc arc jet reactor operating with a CH 4/H 2/Ar mixture was analyzed. A combination of optical emission and cavity ring-down spectroscopy (CRBS) of electronically excited hydrogen atoms and two-dimensional modeling was used. It was observed that at low F° H2, the maximum in the electron and the H(n=2) atom distributions occur in spatial regions of the plume. It was found that Stark broadening of the Balmar-β transition depended on the local electron density close to the H(n=2) atoms.