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Optics Letters

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  • Editor: Alan E. Willner
  • Vol. 38, Iss. 7 — Apr. 1, 2013
  • pp: 1110–1112

Temperature-dependent bulk viscosity of nitrogen gas determined from spontaneous Rayleigh–Brillouin scattering

Ziyu Gu and Wim Ubachs  »View Author Affiliations


Optics Letters, Vol. 38, Issue 7, pp. 1110-1112 (2013)
http://dx.doi.org/10.1364/OL.38.001110


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Abstract

Values for the bulk viscosity ηb of molecular nitrogen gas (N2) were derived from spontaneous Rayleigh–Brillouin scattering at ultraviolet wavelengths (λ=366.8nm) and at a 90° scattering angle. Analysis of the scattering profiles yields values showing a linear increasing trend, ranging from ηb=0.7×105 to 2.0×105kg·m1·s1 in the temperature interval from 255 to 340 K. The present values, pertaining to hypersound acoustics at frequencies in the gigahertz domain, are found to be in agreement with results from acoustic attenuation experiments in N2 performed at megahertz frequencies.

© 2013 Optical Society of America

OCIS Codes
(010.0010) Atmospheric and oceanic optics : Atmospheric and oceanic optics
(290.5830) Scattering : Scattering, Brillouin
(290.5840) Scattering : Scattering, molecules
(290.5870) Scattering : Scattering, Rayleigh

ToC Category:
Scattering

History
Original Manuscript: January 30, 2013
Manuscript Accepted: February 19, 2013
Published: March 25, 2013

Citation
Ziyu Gu and Wim Ubachs, "Temperature-dependent bulk viscosity of nitrogen gas determined from spontaneous Rayleigh–Brillouin scattering," Opt. Lett. 38, 1110-1112 (2013)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-38-7-1110

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