Title :
Spectroscopoic research of plasma formed in nanosecond high pressure gas discharge
Author :
Yatom, Shurik ; Krasik, Yakov E. ; Stambulchik, Evgeniy
Author_Institution :
Dept. of Phys., Technion - Israel Inst. of Technol., Haifa, Israel
Abstract :
Summary form only given. Plasma parameters in nanosecond discharge in He gas at pressure of 105 Pa, initiated by high-voltage pulse with amplitude up to 160 kV and duration of 5 ns at Full Width at Half Maximum, were studied employing visible spectroscopy. Total of 7 of He I spectral lines in the visible range were investigated with time resolution of 1 ns and spatial resolution of 1 mm. Using the Stark broadening analysis of spectral lines, the plasma electron density evolution was calculated along with peak line opacities and low-frequency electric field presenting in the plasma. The results imply a complex structure of the discharge channel with regions of different plasma densities.
Keywords :
Stark effect; discharges (electric); helium; opacity; plasma density; plasma diagnostics; spectral line broadening; He; Stark broadening analysis; discharge channel complex structure; full width at half maximum; high-voltage pulse; low-frequency electric field; nanosecond high pressure gas discharge; peak line opacities; plasma electron density evolution; plasma formation; plasma parameters; pressure 100000 Pa; spatial resolution; spectral lines; spectroscopic research; time 5 ns; time resolution; visible spectroscopy; voltage 160 kV; Discharges (electric); Electric fields; Physics; Plasma density; Spatial resolution; Spectroscopy;
Conference_Titel :
Plasma Science (ICOPS), 2013 Abstracts IEEE International Conference on
Conference_Location :
San Francisco, CA
DOI :
10.1109/PLASMA.2013.6633443
