Schlieren Visualization Technique Applied to the Study of Laser-Induced Breakdown in Low Density Hypersonic Flow
- Laboratorio Associado de Combustao e Propulsao INPE, Caixa Postal 01 12630-000 Cachoeira Paulista, SP. (Brazil)
- Laboratory of Aerothermodynamics and Hypersonics, IEAv-CTA, Sao Jose dos Campos - SP 12228-840 (Brazil)
- Laboratorio Associado de Combustao e Propulsao INPE, Caixa Postal 01 12630-000 Cachoeira Paulista, SP (Brazil)
- Department of Mechanical, Aerospace, and Nuclear Engineering. Rensselaer Polytechnic Institute (RPI), Troy, NY (United States)
Experimental results on the visualization of the time evolution of the laser-plasma induced breakdown produced in low density hypersonic flow using the Schlieren technique are presented. The plasma was generated by focusing the high power laser pulse of a CO2 TEA laser in the test section of the IEAv 0.3m Hypersonic Shock Tunnel. An ultra-high speed electronic tube camera was used to register the event. The photographs reveal the expansion of the shock wave produced by the laser generated hot plasma and the convection of the plasma kernel by the hypersonic flow. It is also observed the interaction between the plasma disturbed region and the shock established by the flow around an hemisphere-cylinder model. A strong change in the shock wave structure near the model was observed, corroborating the DEAS concept.
- OSTI ID:
- 20800251
- Journal Information:
- AIP Conference Proceedings, Vol. 830, Issue 1; Conference: 4. international symposium on beamed energy propulsion, Nara (Japan), 15-18 Nov 2005; Other Information: DOI: 10.1063/1.2203293; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
- Country of Publication:
- United States
- Language:
- English
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