Electron density profile measurements from hydrogen line intensity ratio method in Versatile Experiment Spherical Torus

2016 ◽  
Vol 87 (11) ◽  
pp. 11E540
Author(s):  
YooSung Kim ◽  
Yue-Jiang Shi ◽  
Jeong-hun Yang ◽  
SeongCheol Kim ◽  
Young-Gi Kim ◽  
...  
Keyword(s):  
Electron Density ◽  
Density Profile ◽  
Line Intensity ◽  
Intensity Ratio ◽  
Electron Density Profile ◽  
Ratio Method ◽  
Spherical Torus ◽  
Hydrogen Line ◽  
Line Intensity Ratio

scholarly journals Estimation of electron temperature in atmospheric pressure dielectric barrier discharge using line intensity ratio method

2013 ◽  
Vol 8 (2) ◽  
pp. 37-42 ◽  
Author(s):  
R Shrestha ◽  
RB Tyata ◽  
DP Subedi
Keyword(s):  
Electron Temperature ◽  
Dielectric Barrier Discharge ◽  
Line Intensity ◽  
Atmospheric Pressure ◽  
Intensity Ratio ◽  
Barrier Discharge ◽  
Emission Spectra ◽  
Ratio Method ◽  
Dielectric Barrier ◽  
Line Intensity Ratio

Dielectric Barrier Discharge was produced by applying high voltage AC source of frequency (10-30 KHz) and potential difference of (0-20) kV across two parallel plate electrodes with glass as dielectric barrier. Optical emission spectroscopy was used for the characterization of the discharge produced at atmospheric pressure. The emission spectra in the range of 200 nm to 850 nm have been analyzed to estimate the electron temperature by line intensity ratio method. The results showed that the electron temperature is about 0.9 eV. Kathmandu University Journal of Science, Engineering and Technology Vol. 8, No. II, December, 2012, 37-42 DOI: http://dx.doi.org/10.3126/kuset.v8i2.7323

scholarly journals Electron Density Enhancement During an UV Explosive Event

2001 ◽  
Vol 203 ◽  
pp. 407-409
Author(s):  
M. S. Madjarska ◽  
J. G. Doyle ◽  
L. Teriaca
Keyword(s):  
High Resolution ◽  
Electron Density ◽  
Line Intensity ◽  
Intensity Ratio ◽  
Mhd Simulations ◽  
Line Intensity Ratio ◽  
Density Enhancement ◽  
Sensitive Line ◽  
Clear Increase ◽  
Explosive Event

High resolution temporal observations performed with the SUMER spectrometer on SoHO provide us the opportunity to investigate the electron density variations in the solar mid-transition region due to explosive event-like phenomena. The O IV 1401.16/1404.81 density sensitive line intensity ratio shows a clear increase during a strong explosive event, corresponding to an electron density enhancement of a factor of ~ 3 with respect to pre-event values. This is consistent with recent MHD simulations (2.5 D).

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