Gas temperature measurements in weakly ionized glow discharges with filtered Rayleigh scattering
| Autor: | Yury Z. Ionikh, Richard B. Miles, Azer P Yalin |
|---|---|
| Rok vydání: | 2002 |
| Předmět: |
Argon
Materials science business.industry Materials Science (miscellaneous) chemistry.chemical_element Plasma Laser Temperature measurement Industrial and Manufacturing Engineering Light scattering law.invention symbols.namesake Optics chemistry Physics::Plasma Physics law Ionization symbols Plasma diagnostics Business and International Management Atomic physics Rayleigh scattering business |
| Zdroj: | Applied optics. 41(18) |
| ISSN: | 1559-128X |
| Popis: | We report the first gas temperature measurements in plasmas to our knowledge obtained by filtered Rayleigh scattering (FRS). A narrow-linewidth Ti:sapphire laser is used as the illumination source, and a mercury filter provides strong suppression of elastic background. We perform measurements in weakly ionized glow discharges in pure argon and in an argon-plus-1%-nitrogen mixture. Where possible, we verify the FRS technique by comparing filtered measurements with unfiltered measurements. We present point measurements of axial temperature with uncertainties of less than 5%. We use a planar scheme to obtain radial temperature profiles with uncertainties of 10%. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|