Conference item
Spatially resolved absorption spectroscopy of NO in shock tube experiments using an ultraviolet tunable modeless laser
- Abstract:
- Shock tube experiments are conducted in the Oxford T6 Stalker Tunnel utilising a 226 nm bespoke modeless laser for nitric oxide absorption spectroscopy. The laser is expanded into a laser sheet to spatially resolve absorbed light behind the shock wave. Each laser pulse comprises two discrete wavelength ranges, which can be independently tuned within the 224–227 nm range. Nitric oxide (NO) absorption lines are targeted to compare experimentally measured absorbance to NESS–NEQAIR simulations at the nominal experimental conditions and infer number densities through a simple least-squares minimisation. The T6 Stalker facility is used to drive shocks in the 3.3–6.5 km.s<sup>−1</sup> velocity range, with post-shock pressures varying between 35.8 and 150.7 kPa. The collection optics used for imaging were developed and optimised for VUV emission spectroscopy and designed as a telecentric system. Their performance and resolution are briefly presented in this paper.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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- Files:
-
-
(Preview, Accepted manuscript, pdf, 28.1MB, Terms of use)
-
- Publisher copy:
- 10.2514/6.2026-1680
Authors
+ UK Research and Innovation
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- Funder identifier:
- https://ror.org/001aqnf71
- Grant:
- MR/T041269/1
- MR/Z000246/1
- Publisher:
- American Institute of Aeronautics and Astronautics
- Host title:
- AIAA SCITECH 2026 Forum
- Publication date:
- 2026-01-08
- Event title:
- AIAA SCITECH 2026 Forum
- Event location:
- Orlando, Florida, UK
- Event website:
- https://aiaa.org/2025/10/09/aiaa-scitech-forum-2026-to-break-barriers-together/
- Event start date:
- 2026-01-12
- Event end date:
- 2026-01-16
- DOI:
- EISBN:
- 9781624107658
- Language:
-
English
- Pubs id:
-
2374844
- Local pid:
-
pubs:2374844
- Deposit date:
-
2026-04-08
- ARK identifier:
Terms of use
- Copyright holder:
- Buquet et al.
- Copyright date:
- 2026
- Rights statement:
- Copyright © 2026 by Maïlys T. B. Buquet, Benjamin A. O. Williams, Paul Ewart, Matthew McGilvray, Justin Clarke, Luca Di Mare and Tobias Hermann. Published by the American Institute of Aeronautics and Astronautics, Inc., with permission.
- Notes:
- The author accepted manuscript (AAM) of this paper has been made available under the University of Oxford's Open Access Publications Policy, and a CC BY public copyright licence has been applied.
- Licence:
- CC Attribution (CC BY)
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