A 2600-K tantalum cavity as an interesting infrared source for absorbance measurements

Fabrizio Maseri, Laurent Philippe, Isabelle Derycke, Jacques Darville, Jean-Pol Vigneron, Jean-Marie Gilles

Research output: Contribution to journalArticle

Abstract

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.
Original languageEnglish
Pages (from-to)2160-2165
Number of pages6
Journal Review of Scientific Instruments
Volume64
Issue number8
DOIs
Publication statusPublished - 1993

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