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Light scattering by a liquid-gas helium spray*

Published online by Cambridge University Press:  15 May 2001

Y. Ladam ,
P.-E. Wolf ,
P. Thibault  and
L. Puech
Y. Ladam
Affiliation:
Centre de Recherches sur les Très Basses Températures, Laboratoire associé à l'Université Joseph Fourier, CNRS, BP 166, 38042 Grenoble Cedex 9, France
P.-E. Wolf
Affiliation:
Centre de Recherches sur les Très Basses Températures, Laboratoire associé à l'Université Joseph Fourier, CNRS, BP 166, 38042 Grenoble Cedex 9, France
P. Thibault
Affiliation:
Centre de Recherches sur les Très Basses Températures, Laboratoire associé à l'Université Joseph Fourier, CNRS, BP 166, 38042 Grenoble Cedex 9, France
L. Puech*
Affiliation:
Centre de Recherches sur les Très Basses Températures, Laboratoire associé à l'Université Joseph Fourier, CNRS, BP 166, 38042 Grenoble Cedex 9, France
*
[email protected]
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Abstract

Light scattering by liquid helium droplets or gaseous helium bubbles is strongly forward. This has 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 intensity collected 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.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 14 , Issue 2 , May 2001 , pp. 137 - 141
Copyright
© EDP Sciences, 2001

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Footnotes

*

This paper has been presented at “Sixièmes journées de cryogénie et supraconductivité”, 16-19 May 2000, Aussois.

References

Y. Ladam, P.E. Wolf, L. Puech, 2nd Int. Symposium on Heat and Mass Transfert (Delft University Press, 1997).
Y. Ladam, Thesis at Université Joseph Fourier, March 2000.
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H.C. Van de Hulst, Light Scattering by small particles (Wiley, New York, 1957. Dover paperback reprint, 1981).
J.P. Bouchaud, in Levy Flights and Related Topics in Physics, Proceedings of the International Workshop (Springer-Verlag, Berlin, 1995).
Henyey, L.G., Greenstein, J.L., Astrophys. J. 93, 70 (1941). CrossRef
H.C. Van de Hulst, Reviews in Modern Astronomy, edited by R.E. Schielicke, 1996, Vol. 9.
H.C. Van de Hulst, Multiple Light Scattering (Academic Press, 1980), Vol. 2, p. 308.