A method for interpreting small angle neutron scattering data from quasi-spherical objects
Conference
·
OSTI ID:225298
- ANSTO, Menai, New South Wales (Australia)
Small angle scattering data are traditionally interpreted in terms of scattering patterns at the Porod and Guinier limits. It is difficult to fit the entire scattering pattern to account for scattering from spheres because Rayleigh`s formula contains oscillatory terms which are smeared out in practice by perturbations in the sizes of the scattering agents. It is proposed that a Lorenztian type function be used instead of Rayleigh`s function. By using this equation it is possible to fit the entire small angle scattering pattern and obtain the correct forms of the Guinier and Porod limits. The effects of correlation and multiple scattering are also explored. The authors address the problem of multiple scattering to determine the effect of thickness on the SANS spectra of hydrated cement pastes.
- OSTI ID:
- 225298
- Report Number(s):
- CONF-941144--; ISBN 1-55899-278-2
- Country of Publication:
- United States
- Language:
- English
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