A 2600-K tantalum cavity as an interesting infrared source for absorbance measurements
| Autor: | Isabelle Derycke, J. Darville, Jean-Pol Vigneron, L. Philippe, F. Maseri, J.-M. Gilles |
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| Jazyk: | angličtina |
| Rok vydání: | 1993 |
| Předmět: |
Materials science
Absorption spectroscopy business.industry Infrared Tantalum Analytical chemistry chemistry.chemical_element Astrophysics::Cosmology and Extragalactic Astrophysics Absorbance Optics chemistry Measuring instrument Emissivity business Instrumentation Astrophysics::Galaxy Astrophysics Bar (unit) |
| Zdroj: | Review of Scientific Instruments. 64(8):2160-2165 |
| ISSN: | 1089-7623 0034-6748 |
| DOI: | 10.1063/1.1143954 |
| Popis: | A design is proposed for a stable infrared source suited to absorbance measurements. The source is a parallelepipedic cavity of tantalum, heated to 2600 K, with an apparent emissivity in excess of 0.7. It is observed to be three times brighter at 3000 cm−1 than the 1440‐K SiC bar. A model is constructed in order to estimate the temperature distribution. For this kind of source, the temperature and emissivity are found to be quite uniform. A comparison between estimated and experimental values of temperature and emissivity is discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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