Measuring the electron temperature by optical emission spectroscopy in two temperature plasmas at atmospheric pressure: A critical approach
- Instituto de Ciencia de Materiales de Sevilla (CSIC-Univ. Sevilla), Dep. Fisica Atomica, Molecular y Nuclear and Dep. Quimica Inorganica (Univ. Sevilla), Av. Americo Vespucio 41092 Sevilla (Spain)
The measurement of the electron mean kinetic energy by identifying the electron temperature and the excitation temperature obtained by optical emission spectroscopy is theoretically studied for two temperature argon plasmas at atmospheric pressure. Using a 32-level collisional radiative model in which both electron impact and argon-impact inelastic collisions are taken into account, it has been found that under certain conditions the argon inelastic collisions may cause a decrease of the argon excitation temperature so that the relation T{sub e}>T{sub exc}>T{sub 0} is satisfied. This inequality also appears when electron losses due to diffusion are important and the electron density is lower than its equilibrium value.
- OSTI ID:
- 20787859
- Journal Information:
- Journal of Applied Physics, Vol. 99, Issue 3; Other Information: DOI: 10.1063/1.2170416; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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