SciELO - Scientific Electronic Library Online

vol.40 issue4Vortex dynamics equation in type-II superconductors in a temperature gradientEffect of thermo-mechanical parameters on microstructure and mechanical properties of microalloyed steels author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Brazilian Journal of Physics

Print version ISSN 0103-9733


KHATUN, Hasina; SHARMA, A.K.  and  BARHAI, P.K.. Experimental study of low-pressure nitrogen dielectric barrier discharge. Braz. J. Phys. [online]. 2010, vol.40, n.4, pp.450-453. ISSN 0103-9733.

The electrical and spectral characteristics of a dielectric barrier discharge (DBD) are experimentally investigated in a sealed off coaxial cylinder filled with nitrogen at a pressure of 10 mbar. The discharge is a transient diffused glow at low frequency alternating voltage (60 Hz) and changes to a filamentary mode at high frequency alternating voltage (35 kHz). In case of pulsed voltage, the discharge is always transient diffused glow at any frequency. The intensity of a second positive system (SPS) of the nitrogen molecule has been also measured to characterize the discharge excitation. The effective vibrational temperature is estimated from the SPS vibrational band, Δv = -2. It is concluded that the intensity of the SPS of the nitrogen and the effective vibrational temperature depends upon the reduced electric field and the energy consumed per cycle by the device.

Keywords : Dielectric barrier discharge; Second positive system; effective vibrational temperature.

        · text in English     · English ( pdf epdf )


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License