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Collisional narrowing and spectral shift in coherent anti-stokes Raman spectra of molecular nitrogen up to 2500 bar and 700 K |
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| Authors: | Th Bouché Th Dreier B Lange J Wolfrum E U Franck W Schilling |
| Institution: | (1) Physikalisch-Chemisches Institut der Universität, Im Neuenheimer Feld 253, D-6900 Heidelberg, Fed. Rep. Germany;(2) Institut für Physikalische Chemie, Universität Karlsruhe, Kaiserstrasse 12, D-7500 Karlsruhe 1, Fed. Rep. Germany |
| Abstract: | CARS spectra of the N2 Q-branch up to 2500 bar and 700 K have been measured. Calculated spectra based on theoretical models show significant disagreement with measured spectra above 300 bar so that CARS temperature measurements are in error by 130 K at 700 K and –150 K at 295 K. The spectral shift of the Q-branch reaches an asymptotic value corresponding to that measured in liquid nitrogen. |
| Keywords: | 42 65 Dr 34 50 Ez |
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