The effects of multiple scattering on the analysis of USANS data
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Date
2004-02-04
Authors
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Volume Title
Publisher
Australian Institute of Physics
Abstract
Small-angle neutron scattering (SANS) and ultra-small-angle neutron scattering (USANS) are
widely used to investigate the micro- and nano-structure of condensed matter. However,
measurements on materials such as cements, clays etc. are often affected by multiple
scattering.
If a substantial number of neutrons experience more than one scattering event within a
sample, the result is broadening of the angular distribution profile. Often samples cannot be
made thin enough to guarantee single scattering and even in cases where it is possible to make
thin samples, surface effects can sometimes lead to results that are not representative of the
bulk material. In addition, for many SANS and USANS measurements there is no reliable
method for determining whether or not a sample is thin enough to produce predominantly
single scattering.
Here we present a new method for extracting singly-scattered data from data affected by
multiple scattering. One of the main advantages over our previously published method [1] is
that this method is much easier to apply as it requires no initial modeling and fitting of the
data.
Description
Keywords
Small angle scattering, Scattering, Nanostructures, Matter, Cements, Clays
Citation
Bertram, W. K. (2004). The effects of multiple scattering on the analysis of USANS data. Poster presented to the 28th Annual Condensed Matter and Materials Meeting, Charles Sturt University, Wagga Wagga, 3-6 February 2004. Retrieved from: https://www.physics.org.au/wp-content/uploads/cmm/2004/04handbook.pdf