A new liquid surface neutron reflectometer and its application to the study of DPPC in a monolayer at the air/water interface

D. Vaknin, K. Kjær, J. Als-Nielsen, M. Lösche

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    Abstract

    A constant wavelength neutron reflectometer is described. Using this reflectometer, the neutron reflectivities from phosphatidylcholine monolayers in the highly condensed LC phase on ultra pure H2O and D2O have been measured on a Wilhelmy film balance. The neutron reflectivities have been carefully compared with those obtained by the X‐ray method applied to the same monolayer under similar conditions. A new approach to analyzing a combined set of data composed of X‐ray and neutron reflectivities has been used. From the analysis it is concluded that despite their limited qz range neutron reflectivities are as essential as X‐ray reflectivities for the unique determination of the monolayer structure.
    Original languageEnglish
    JournalMakromolekulare Chemie. Macromolecular Symposia
    Volume46
    Issue number1
    Pages (from-to)383-388
    ISSN0258-0322
    DOIs
    Publication statusPublished - 1991

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