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Proceedings Paper

Neutron inverse optics in layered materials
Author(s): Helmut Kaiser; K. Hamacher; R. Kulasekere; Wing T. Lee; J. F. Ankner; Brian DeFacio; Paul F. Miceli; David L. Worcester
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Paper Abstract

Neutron specular reflectivity data obtained with a new grazing angle neutron spectrometer (GANS) from a NiC/Ti-multilayer sample were analyzed and modeled for reconstructing the scattering length density profile as a periodic step potential for the layered material. There is some ambiguity in the results due to the uniqueness problem with missing phase information. For more complex layered materials, there is often insufficient knowledge about the layers to use modeling reconstruction without phase information. In the second part, we present a method in which this problem is solved for diffraction data from lipid multilayers: due to changes in chemistry (isomorphous heavy atom method) the phases are determined directly and therefore the density profile of the lipid bilayer can be uniquely determined.

Paper Details

Date Published: 8 July 1994
PDF: 12 pages
Proc. SPIE 2241, Inverse Optics III, (8 July 1994); doi: 10.1117/12.179750
Show Author Affiliations
Helmut Kaiser, Univ. of Missouri/Columbia (United States)
K. Hamacher, Univ. of Missouri/Columbia (United States)
R. Kulasekere, Univ. of Missouri/Columbia and Univ. of Missouri/Rolla (United States)
Wing T. Lee, Univ. of Missouri/Columbia (United States)
J. F. Ankner, Univ. of Missouri/Columbia (United States)
Brian DeFacio, Univ. of Missouri/Columbia (United States)
Paul F. Miceli, Univ. of Missouri/Columbia (United States)
David L. Worcester, Univ. of Missouri/Columbia (United States)

Published in SPIE Proceedings Vol. 2241:
Inverse Optics III
Michael A. Fiddy, Editor(s)

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