Papers by Maria Carmen Garcia
Time resolved spectroscopy of an underwater dielectric barrier discharge plasma jet
2012 Abstracts IEEE International Conference on Plasma Science, 2012
ABSTRACT form only given. Atmospheric pressure plasmas in liquid water have enjoyed much attentio... more ABSTRACT form only given. Atmospheric pressure plasmas in liquid water have enjoyed much attention recently due to their ability to create vast quantities of short-lived radicals, excited species, and many other highly oxidative particles that have the ability to sterilize contaminated water. These plasmas have been shown to exhibit several distinct characteristics over a power cycle. The varying physical differences are believed to correspond to significant changes in the production mechanics of important chemical species. The dynamic characteristics of these plasmas require dynamic analyses. Presented here are the results of time-resolved spectroscopy of an underwater dielectric barrier discharge plasma jet.
Measuring the electron density in plasmas from the difference of Lorentzian part of the widths of two Balmer series hydrogen lines
Spectrochimica Acta Part B: Atomic Spectroscopy, 2015
ABSTRACT We present an alternative optical emission spectroscopy method to measure the plasma ele... more ABSTRACT We present an alternative optical emission spectroscopy method to measure the plasma electron density from the difference of widths of two Balmer series hydrogen lines (Hα and Hβ), especially convenient for nonthermal plasmas since with this method, there is no need to know either the gas temperature or the van der Waals contribution to the Lorentzian part of the line. In this paper it has been assumed that the part of full width at half maximum due to Stark broadening can be determined with the approximation of Lorentzian line shape. The method has been applied to the determination of the electron density in an argon microwaveinduced plasma maintained at atmospheric pressure, and comparison with the results obtained using other diagnostic methods has been done.
AIP Conference Proceedings, 2007
We present an alternative optical emission spectroscopy method to measure the plasma electron den... more We present an alternative optical emission spectroscopy method to measure the plasma electron density from
the difference of widths of two Balmer series hydrogen lines (H α and H β ), especially convenient for non-
thermal plasmas since with this method, there is no need to know either the gas temperature or the van der
Waals contribution to the Lorentzian part of the line. In this paper it has been assumed that the part of full
width at half maximum due to Stark broadening can be determined with the approximation of Lorentzian line
shape. The method has been applied to the determination of the electron density in an argon microwave-
induced plasma maintained at atmospheric pressure, and comparison with the results obtained using other diag-
nostic methods has been done.
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Papers by Maria Carmen Garcia
the difference of widths of two Balmer series hydrogen lines (H α and H β ), especially convenient for non-
thermal plasmas since with this method, there is no need to know either the gas temperature or the van der
Waals contribution to the Lorentzian part of the line. In this paper it has been assumed that the part of full
width at half maximum due to Stark broadening can be determined with the approximation of Lorentzian line
shape. The method has been applied to the determination of the electron density in an argon microwave-
induced plasma maintained at atmospheric pressure, and comparison with the results obtained using other diag-
nostic methods has been done.