Asymptotic solutions for a continuum model of a DC gas discharge in cavities with different geometry



Document title: Asymptotic solutions for a continuum model of a DC gas discharge in cavities with different geometry
Journal: Revista mexicana de física
Database: PERIÓDICA
System number: 000454121
ISSN: 0035-001X
Authors: 1
1
1
2
2
Institutions: 1Universidad Nacional Autónoma de México, Instituto Energías Renovables, Temixco Morelos. México
2Universidad Autónoma del Estado de Morelos, Centro de Investigación en Ciencias, Cuernavaca Morelos. México
Year:
Season: Sep-Oct
Volumen: 68
Number: 5
Country: México
Language: Inglés
Document type: Artículo
Approach: Analítico, teórico
English abstract Analytical solutions for a continuum model of a DC gas discharge were obtained by asymptotic approximations. The solutions are one-dimensional and stationary. Three different cavity configurations of electrode pairs were considered, namely, parallel flat plates, concentric cylinders and concentric spheres. The asymptotic approximations consider nonlinear effects that are present in the dynamics of the plasma which are neglected in most of analytical solutions found in the literature. The obtained solutions determine the distribution of positively and negatively charged particles, as well as the electric potential along the space domain. Analytical results agree quantitatively with results from a spectral numerical solution developed for validation purposes. Such agreement was possible in a regime where the rate of charged particle production was assumed to be very small. Finally the limits of this regime are reported
Disciplines: Física y astronomía
Keyword: Física,
Descarga de gas CC,
Potencial eléctrico,
Número de Avogadro
Keyword: Physics,
DC gas discharge,
Electric potential,
Avogadro number
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