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Author Miller, D. ♦ Quinby-Hunt, M. S. ♦ Hunt, A. J.
Source United States Department of Energy Office of Scientific and Technical Information
Content type Text
Language English
Subject Keyword INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS ♦ ICE ♦ LIGHT SCATTERING ♦ MEASURING INSTRUMENTS ♦ SEAS ♦ POLARIZATION ♦ OPTICAL EQUIPMENT ♦ INTERFACES
Abstract We have developed a novel bistatic polarization-modulated nephelometer that probes a medium enabling {ital in} {ital situ} measurement of angle- and polarization-dependent light scattering through a planar interface. This is particularly important for media with a planar interface such as sea ice but also for media in which measurements at great distance or depth, e.g., the atmosphere, are desirable. The instrument sits directly and noninvasively on the planar surface of the scattering medium. Light from a laser beam is directed into the medium and the scattered light is detected by analyzer optics. The angle of both the laser and detector beams in the medium can be varied continuously. Alternating current polarimetry is used to obtain phase function and polarization information of the scattered light. Measurements from this instrument of scattering from monodisperse polystyrene (latex) spheres in the laboratory are in good qualitative agreement with the results of Mie calculations and measurements made with a conventional monostatic nephelometer. This instrument has also been used to make preliminary investigations of scattering in sea ice in Pt. Barrow, Alaska. {copyright} {ital 1996 American Institute of Physics.}
ISSN 00346748
Educational Use Research
Learning Resource Type Article
Publisher Date 1996-06-01
Publisher Department Lawrence Berkeley National Laboratory
Publisher Place United States
Journal Review of Scientific Instruments
Volume Number 67
Issue Number 6
Organization Lawrence Berkeley National Laboratory


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