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Experimental study on radiation attenuation by a water film

Abstract : Radiative transfer through a water film was investigated. Films with average thicknesses between 100 and 380 μ m were studied. The film thickness was measured using an optical method based on the attenuation of a near infrared laser beam. The attenuation of infrared radiation on a wide spectral range was determined simultaneously by using a \FTIR\ spectrometer. A high attenuation efficiency was observed even for such small film thicknesses, which demonstrated the shielding effect of water films. Extension of present observations to high temperature sources allows the evaluation of the film absorption, which was predicted in the range 60–95% for films between 100 μ m and 1 mm and for incident radiation from blackbodies up to 1473 K.
Keywords : Water film
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Submitted on : Tuesday, January 3, 2017 - 2:06:21 PM
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Damien Brissinger, Gilles Parent, Pascal Boulet. Experimental study on radiation attenuation by a water film. Journal of Quantitative Spectroscopy and Radiative Transfer, 2014, 145, pp.160 - 168. ⟨10.1016/j.jqsrt.2014.04.020⟩. ⟨hal-01425205⟩



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