A Langmuir probe technique for measuring temperatures in a flame plasma
Abstract
A simple method of measuring the temperature of a flame is presented. It is based on the use of a Langmuir probe and the assumption that the flame exhibits local thermal equilibrium so that the Saha equation can be applied. The method has been compared to measurements of temperature based on the relative emissivity of the Na D line at 5896 A and shows good agreement except in regions where the flame is greatly perturbed or steep temperature gradients exist.
- Publication:
-
Canadian Journal of Physics
- Pub Date:
- January 1977
- DOI:
- 10.1139/p77-003
- Bibcode:
- 1977CaJPh..55...27M
- Keywords:
-
- Electrostatic Probes;
- Flame Temperature;
- Plasma Diagnostics;
- Saha Equations;
- Temperature Measurement;
- D Lines;
- Electron Density (Concentration);
- Emissivity;
- Temperature Gradients;
- Thermodynamic Equilibrium;
- X-Y Plotters;
- Plasma Physics