A laser-based light attenuation technique was successfully used to measure interfacial areas as high as 5832 m2/m3 and Sauter mean bubble diameter varying between 50 and 5600 pm. Good agreement between this approach and the photographic technique was obtained particularly at low gas holdups.On a utilisC avec sucds une technique d'attknuation de la lumibre bade sur le laser afin de mesurer des surfaces interfaciales atteignant 5832 m2/m3 et le diamttre des bulles moyen de Sauter variant entre 50 et 5600 pm. Un bon accord a Ctt obtenu entre cette approche et la technique photographique particulibrement h de faibles rktentions de gaz.
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