SUMMARY Laser Thomson scattering (LTS) was applied to arc discharges generated in the atmosphere to measure electron density (n e ) and electron temperature (T e ). The electrode gap was 0.8 mm, and the electrode diameter was 1 mm. The applied voltage was 6 kV, the peak current was 600 A, and the decay time of the voltage and current was 25 μs. The spatiotemporal evolution of n e and T e was measured 10, 30, and 50 μs after discharge initiation. At these times, the obtained values of n e and T e were estimated to be in the ranges of (0.8 to 2.0) × 10 23 m -3 and 1.0 to 2.2 eV, respectively. These values were consistent with those evaluated using Saha's thermodynamic equation at 1 atm. It was also found that the decay of the arc discharge produced using the tungsten-copper electrodes was much faster than that produced using the tungsten electrodes.
|Number of pages||8|
|Journal||Electrical Engineering in Japan (English translation of Denki Gakkai Ronbunshi)|
|Publication status||Published - Jan 1 2014|
All Science Journal Classification (ASJC) codes
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering