Akademik Veri Yönetim Sistemi
International Journal of Current Research, cilt.9, sa.10, ss.59757-59761, 2017 (Hakemli Dergi)
This paper presents the experimental characterization of an atmospheric (atm) pressure, high-power alternating-current (AC) three-phase plasmatron established in AR&TeCS Inc. by using optical emission spectroscopy (OES) method. Power of the arc plasma jet changes in the range of 590-1100 kW. At each power, emission of the jet is collected by an fiber optic spectrometer (200-1100 nm). The atm plasma is mainly dominated by the nitrogen species in the visible range. The strongest nitrogen atomic line (NII or N+-singly ionized) is detected at 510.45 nm. The others are observed at 589.32, 606.50 and 617.33 nm. The electron temperature (Te) is replaced by the excitation temperature (Text) according to the assumption of local thermodynamic equilibrium (LTE). The calculated Te is in the range of 11654-12400 K. The electron density (ne) is determined from the equation that is referred by McWhirter. The value of the density changes around 10-21 m-3. The both Te and ne increase with the arc power up to 950 kW and then a sharp decrease is clearly observed. After 1 MW power, the decrease becomes stable.