Experimental study of the modified Paschen's law: glow discharge of Ethanol (CH_(3)CH_(2)OH), Methanol (CH_(3)OH) and its mixture

• J.C. Palomares ^[1] ; P.G, Reyes ^[1] ; A. Gómez ^[1] ; M.J. Rodríguez ; C. Torres ^[2] ; J. Vergara ^[2] ; H. Martínez ^[3]
  1. [1] Universidad Autónoma del Estado de México

     Universidad Autónoma del Estado de México

     México

     
  2. [2] Universidad Autónoma del Estado de Morelos

     Universidad Autónoma del Estado de Morelos

     México

     
  3. [3] Universidad Nacional Autónoma de México

     Universidad Nacional Autónoma de México

     México

     

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• Localización: Revista Mexicana de Física, ISSN-e 0035-001X, Vol. 68, Nº. 4, 2022, págs. 744-752
• Idioma: inglés
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• Resumen

  • A low-pressure ethanol and methanol discharge produced by a DC electric field was studied experimentally, analyzing the disruptive voltaje between parallel electrodes with a circular geometry as function of pressure and distance according with the Paschen’s law, this states that the breakdown voltage is a function of the product of gas pressure and distance following the relationship: VB = f(pd). Detailed knowledge of the minimum breakdown voltage required to initiate the ethanol-methanol discharge will be useful to providing important information for future experiments and applications. In this experiment, a cylindrical chamber was used to generate a glow discharge of the ethanol (CH_(3)CH_(2)OH), methanol (CH_(3)OH), and 50% mixture, over a pressure range of 0.07-5.00 Torr. Optical emission spectroscopy was performed in the wavelength range of 200-900 nm. The Paschen curves, measured experimentally for ethanol and methanol are presented, taking in account the coefficient obtained using the variation in Paschen’s law as a function of the distance and radius of the electrodes (d/r).