Title :
Time evolution in visible light emission from high-power Ar pulse-modulated induction thermal plasmas
Author :
Tanaka, Yasunori ; Taniguchi, K. ; Muroya, T. ; Uesugi, Y.
Author_Institution :
Dept. of Electr. & Electron. Eng., Kanazawa Univ., Japan
fDate :
4/1/2005 12:00:00 AM
Abstract :
Transient behavior of a 15-kW Ar pulse-modulated induction thermal plasma (PMITP) at a pressure of 31 kPa was observed using a high-speed video camera. The PMITP method is one of new techniques for controlling temperature and radical density in time-domain in high-power thermal plasmas. The adoption of a high-power metal-oxide-semiconductor field-effect transistor (MOSFET) inverter power supply makes it possible to sustain PMITPs with high power-conversion efficiency. The high-speed video pictures provide two-dimensional, time-dependent radiation intensity distributions from PMITPs, which are useful for understanding an unique transition behavior of PMITPs.
Keywords :
argon; high-speed optical techniques; plasma diagnostics; plasma pressure; plasma temperature; power MOSFET; 15 kW; 31 kPa; Ar; MOSFET inverter power supply; high power Ar pulse-modulated induction thermal plasmas; high power-conversion efficiency; high-power metal-oxide-semiconductor field-effect transistor; high-speed video camera; plasma temperature; radical density; time domain; time evolution; time-dependent radiation intensity distributions; transition behavior; two-dimensional radiation intensity distributions; visible light emission; Argon; Cameras; FETs; MOSFET circuits; Plasma density; Plasma temperature; Power MOSFET; Pulsed power supplies; Temperature control; Time domain analysis; High-speed video; inductively coupled plasma; pulse modulation; thermal plasma;
Journal_Title :
Plasma Science, IEEE Transactions on
DOI :
10.1109/TPS.2005.844994
