Rotational state dependence of transient linewidths in the CO2 0001 vibrational level due to translational energy recoil from hot H and D atom collisions
✍ Scribed by John F. Hershberger; James Z. Chou; George W. Flynn; Ralph E. Weston Jr.
- Publisher
- Elsevier Science
- Year
- 1988
- Tongue
- English
- Weight
- 468 KB
- Volume
- 149
- Category
- Article
- ISSN
- 0009-2614
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✦ Synopsis
The nascent transient linewidths of the CO2 00'1, J-+OO"2, J-1 transitions were measured immediately following collisions with hot H and D atoms of 2.30 and 2.16 eV energy, respectively. All lineshapes were well fitted by Gaussian profiles, but were significantly broader than the room-temperature Doppler profiles. D atom collisions resulted in broader linewidths than H atom collisions. The observed widths are in good agreement with a simple billiard ball model for a specific rotational level J. However, the linewidth was observed to increase with increasing rotational state within the 00'1 manifold for both hot H and hot D atom collisions.