17 April 2001 Time-resolved spectroscopy in the shock layer of a blunt body placed in an expansion tube flow
Author Affiliations +
Proceedings Volume 4183, 24th International Congress on High-Speed Photography and Photonics; (2001) https://doi.org/10.1117/12.424337
Event: 24th International Congress on High-Speed Photography and Photonics, 2000, Sendai, Japan
Abstract
In the Shock Wave Research Center, Institute of Fluid Science, Tohoku University, a streak camera system has been used to study high-speed phenomena associated with hypervelocity flow conditions. In the different facilities available, including the expansion tube, different test conditions can be produced for the study of the shock layer around bodies. In certain extreme conditions, the flow is in non-equilibrium and the radiation inside the shock layer is strong enough to be measured by existing spectroscopic techniques. Analysis of the spectra can provide information on the properties of the gas and can be used to validate numerical models. In the present study, time-resolved spectroscopy has been carried out in order to investigate the useful test time of the expansion tube, a very important parameter in the process of calibration of this facility. A spectroscopic system consisting of an Action Research spectrograph of 500 mm focal length, a streak unit (Hamamatsu Photonics) and a CCD camera has been used to measure time-resolved spectra down to microsecond time scales. The system is also equipped with a lens-coupled intensifier of high dynamic range.
© (2001) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Djameel Ramjaun, Djameel Ramjaun, Akihiro Sasoh, Akihiro Sasoh, Yasuyuki Ohnishi, Yasuyuki Ohnishi, Kazuyoshi Takayama, Kazuyoshi Takayama, } "Time-resolved spectroscopy in the shock layer of a blunt body placed in an expansion tube flow", Proc. SPIE 4183, 24th International Congress on High-Speed Photography and Photonics, (17 April 2001); doi: 10.1117/12.424337; https://doi.org/10.1117/12.424337
PROCEEDINGS
7 PAGES


SHARE
RELATED CONTENT

Phosphor Non-Linearities In Picosecond Streak Cameras
Proceedings of SPIE (January 17 1990)
Application Of X-Ray Streak Cameras For Fusion Diagnostics
Proceedings of SPIE (February 04 1988)
Streak Camera Dynamic Range Optimization
Proceedings of SPIE (February 04 1988)
Fully automated streak camera with EB CCD image tube
Proceedings of SPIE (January 01 1993)
Photometric Calibration Of Optical Streak Cameras
Proceedings of SPIE (January 17 1990)

Back to Top