Back to Search
Start Over
Reactive and inelastic scattering dynamics of hyperthermal O and O2 from a carbon fiber network.
- Source :
-
Carbon . Oct2021, Vol. 183, p277-290. 14p. - Publication Year :
- 2021
-
Abstract
- Pulsed beams containing O and O 2 with incident velocities of ā¼7900 m sā1 were directed at a carbon fiber preform network (FiberForm) at temperatures in the range, 1023ā1823 K, and the products that scattered from the network were detected with a rotatable mass spectrometer as a function of their velocities and scattering angles. A beam containing pure Ar atoms was also directed at the network, allowing multiple-bounce effects in the absence of reaction to be characterized. Scattered O, O 2 , and Ar exhibited the dynamical characteristics of impulsive (non-thermal) scattering and thermal desorption (TD). On the other hand, CO and CO 2 exhibited only TD dynamics. The fluxes of all products were quantified as a function of sample temperature and, for two focus temperatures, as a function of scattering angle. CO was the dominant reactive product. A temperature dependent hysteresis in the CO flux was quantified, and a comparison was made between the hysteresis on the carbon fiber network and on a planar vitreous carbon surface. The new results may be used to increase the fidelity of oxygen-carbon ablation models for hypersonic flight. [Display omitted] [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00086223
- Volume :
- 183
- Database :
- Academic Search Index
- Journal :
- Carbon
- Publication Type :
- Academic Journal
- Accession number :
- 152369202
- Full Text :
- https://doi.org/10.1016/j.carbon.2021.07.009