6533b862fe1ef96bd12c5f9c

RESEARCH PRODUCT

Collisional Raman Linewidths of Nitrogen at High-Temperature (1700-2400 K)

B. LavorelL. GuillotJ. BonamyD. Robert

subject

COROTATIONALLY INELASTIC RATESSPECTROSCOPYTHEORETICAL-ANALYSISSPECTRAQ-BRANCHN-2

description

0146-9592; New high-temperature measurements of collisional linewidths of the Roman Q branch of nitrogen have been performed at 1700-2400 K with stimulated Raman spectroscopy in a tungsten filament. We fitted these data together with previous data obtained in the 295-1500-K range to redetermine the parameters of the relaxation models used in coherent anti-Stokes Raman spectroscopy thermometry. The improvement in the accuracy of the temperature measurement has been checked. Semiclassical calculations of linewidths in the 1700-2400-K range agree with the experimental data and have been extended to even higher temperatures.

https://hal.archives-ouvertes.fr/hal-00399123