Coaxial laser absorption and optical emission spectroscopy of high-pressure aluminum monoxide
| العنوان: | Coaxial laser absorption and optical emission spectroscopy of high-pressure aluminum monoxide |
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| المؤلفون: | K A, Daniel, C M, Murzyn, D J, Allen, K P, Lynch, C R, Downing, J L, Wagner |
| المصدر: | Optics Letters. 47:2350 |
| بيانات النشر: | Optica Publishing Group, 2022. |
| سنة النشر: | 2022 |
| مصطلحات موضوعية: | Atomic and Molecular Physics, and Optics |
| الوصف: | This work advances laser absorption spectroscopy with measurements of aluminum monoxide (AlO) temperature and column density in extreme pressure (P > 60 bar) and temperature (T > 4000 K) environments. Measurements of the AlO A2Π i –X2Σ+ transition are made using a microelectromechanical system, tunable vertical cavity surface emitting laser (MEMS-VCSEL). Simultaneous emission measurements of the AlO B2Σ+–X2Σ+ transition are made along a line of sight that is coaxial with the laser absorption. Absorption temperature fits agree with emission spectra for a T = 3200 K, P = 9 bar case. In cases with T > 4000 K, P > 60 bar, absorption fits match the ambient temperature while emission fits over-estimate it, owing to high optical depths. These data juxtapose passive and active spectroscopic methods and demonstrate the versatility of AlO laser absorption in high-pressure and high-temperature environments where experimental data remain scarce, and engineering models will benefit from refined measurements. |
| تدمد: | 1539-4794 0146-9592 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::660760265b155da2987b4e52c5c290bd https://doi.org/10.1364/ol.456342 |
| حقوق: | CLOSED |
| رقم الأكسشن: | edsair.doi.dedup.....660760265b155da2987b4e52c5c290bd |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15394794 01469592 |
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