Emission spectroscopy at high frame rates during ablation tests of meteorite samples in plasma wind tunnel
Article
Article Title | Emission spectroscopy at high frame rates during ablation tests of meteorite samples in plasma wind tunnel |
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ERA Journal ID | 1066 |
Article Category | Article |
Authors | Ravichandran, R., Loehle, S., Hufgard, F., Leiser, D., Zander, F., Ferriere, L., Vaubaillon, J., Matlovic, P. and Toth, J. |
Journal Title | Icarus |
Journal Citation | 407 |
Article Number | 115818 |
Number of Pages | 9 |
Year | 2024 |
Publisher | Elsevier |
Place of Publication | United States |
ISSN | 0019-1035 |
1090-2643 | |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.icarus.2023.115818 |
Web Address (URL) | https://www.sciencedirect.com/science/article/pii/S0019103523003974 |
Abstract | Optical emission spectra between 522–580 nm of ablating meteorites have been recorded at frame rates as high as 1 kHz for the first time during ground testing with simultaneous spatial and temporal resolution. A novel high frame rate emission spectroscopy arrangement has been developed and employed to diagnose the ablating meteorites in several experimental campaigns. In addition to the identification of species from emission lines detected, the resulting high-speed spectral data were used to study the temporal and spatial evolution of melting droplets and the associated spectral signatures. The time history of radiance from the atomic species emission was used to interpret the fragmentation behavior of various meteorites. Chelyabinsk meteorite exhibit almost constant radiance over time indicating steady droplet detachment whereas Ragland meteorite shows infrequent radiance peaks corresponding to random fragmentation/droplet detachment of varying sizes. A gradual rise in radiance history from iron meteorite Mount Joy shows that it takes finite time for melting and accumulation of droplets. |
Keywords | Meteor spectroscopy; High frame rate imaging |
ANZSRC Field of Research 2020 | 510199. Astronomical sciences not elsewhere classified |
Public Notes | Files associated with this item cannot be displayed due to copyright restrictions. |
Byline Affiliations | University of Stuttgart, Germany |
Institute for Advanced Engineering and Space Sciences | |
Museum of Natural History Vienna, Austria | |
Paris Observatory, France | |
Comenius University Bratislava, Slovakia |
https://research.usq.edu.au/item/z2vq6/emission-spectroscopy-at-high-frame-rates-during-ablation-tests-of-meteorite-samples-in-plasma-wind-tunnel
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