| Autor: |
Siebert, Donald R., West, Gary A., Barrett, Joseph J. |
| Zdroj: |
Applied Optics; January 1980, Vol. 19 Issue: 1 p53-60, 8p |
| Abstrakt: |
A new method for trace analysis of gases, based on the pulsed photoacoustic Raman spectroscopy (PARS) technique, is described. The method has been applied to the analysis of mixtures of CH_4 in N_2, CO_2 in N_2, and N_2O in N_2 at concentrations near 1 ppm. The apparatus used is described in some detail. Means of improving the method’s sensitivity as well as sensitivity-limiting processes are evaluated. The analytical capabilities of this technique are compared with both direct (IR) absorption and other Raman techniques such as CARS and stimulated Raman gain spectroscopy (SRGS). |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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