Light scattering by a liquid-gas helium spray*

Author: Ladam Y.   Wolf P.-E.   Thibault P.   Puech L.  

Publisher: Edp Sciences

E-ISSN: 1286-0050|14|2|137-141

ISSN: 1286-0042

Source: EPJ Applied Physics (The), Vol.14, Iss.2, 2010-03, pp. : 137-141

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Abstract

Light scattering by liquid helium droplets or gaseous helium bubbles is strongly forward. Thishas two direct experimental consequences: rare scatterers are very bright in a narrow ($\ll 5^{\circ}$)angular region in the forward direction; and even in the presence of multiple scattering the intensitycollected at large angles is linear in the concentration of scatterers. These properties are explained,and the second one is illustrated with a liquid-gas helium spray.