Absolute Calibration of a Scatterance Meter

Fry, Edward S.

doi:10.1007/978-1-4684-8529-5_7

Cited by 1 publication

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“…In general, accurate measurements of βψ are difficult and impose stringent requirements on the design and calibration of the instruments as well as protocols for acquisition and processing of raw data (e.g., [11,17,26,[45][46][47][48]). The primary goal of this study is to analyze the methodology and present a rigorous protocol for determinations of βψ from measurements taken on aqueous suspensions of particles with the DAWN instrument.…”

Section: Introductionmentioning

confidence: 99%

Determination of the volume scattering function of aqueous particle suspensions with a laboratory multi-angle light scattering instrument

Babin¹,

Stramski²,

Reynolds³

et al. 2012

Appl. Opt.

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We describe a methodology for determining the volume scattering function β(ψ) of aqueous particle suspensions from measurements with a laboratory multi-angle light scattering instrument called DAWN (Wyatt Technology Corporation). In addition to absolute and angular calibration, the key component of the method is the algorithm correcting for reflection errors that reduce the percent error in β(ψ) from as much as ~300% to <13% at backward scattering angles. The method is optimized and tested with simulations of three-dimensional radiative transfer of exact measurement geometry including the key components of the instrument and also validated experimentally using aqueous suspensions of polystyrene beads. Example applications of the method to samples of oceanic waters and comparisons of these measurements with results obtained with other light scattering instruments are presented.

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