Temperature measurements by coherent Rayleigh scattering.
We demonstrate, for the first time to our knowledge, the utility of coherent Rayleigh scattering (CRS) for temperature measurements in low-density gases and weakly ionized plasmas by measuring the translational temperature of neutral argon in a glow discharge. By analysis of the near-Gaussian spectral profile of the CRS signal, we determine temperatures with an uncertainty of </=3%. We also investigate the intensity range over which this simple Gaussian analysis can be used for temperature measurements and discuss its potential for gas diagnostics.
Pan
Xingguo
X
Barker
Peter F
PF
Meschanov
A
A
Grinstead
J H
JH
Shneider
Mikhail N
MN
Miles
Richard B
RB