Morphology of off-specular neutron scattering pattern from islands on a lamellar film

The distorted wave born approximation (DWBA)-based theory is developed and employed to analyze off-specular neutron scattering from islands on the surface of deuterated polystyrene–polybutylmethacrylate (dPS–PBMA) copolymer film. It is shown that the scattering intensity distribution measured over a...

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Bibliographic Details
Published in:Physica. B, Condensed matter Condensed matter, 2000-06, Vol.283 (1), p.60-64
Main Authors: Toperverg, B., Lauter-Pasyuk, V., Lauter, H., Nikonov, O., Ausserré, D., Gallot, Y.
Format: Article
Language:English
Subjects:
Polymer films
Reflectometry
Surfaces
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Summary:The distorted wave born approximation (DWBA)-based theory is developed and employed to analyze off-specular neutron scattering from islands on the surface of deuterated polystyrene–polybutylmethacrylate (dPS–PBMA) copolymer film. It is shown that the scattering intensity distribution measured over a broad range of angles of incidence, including the range of total reflection, can be well interpreted within the simple model of random island distribution over the surface. Only a few film and island parameters, such as mean lateral size, concentration, and those characterizing their internal structure are needed to describe a variety of the features observed experimentally.
ISSN:0921-4526
1873-2135
DOI:10.1016/S0921-4526(99)01892-X