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      Phys. Rev. B 63, 045414 (2001) [/4 pages/]


      [Issue 4 ? 15 January 2001 ]

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      Complete determination of the reflection coefficient in neutron
      specular reflection by absorptive nonmagnetic media

    H. Leeb, H. Grötz, and J. Kasper
    /Institut für Kernphysik, Technische Universität Wien, Wiedner
    Hauptstraße 8-10/142, A-1040 Vienna, Austria/

    R. Lipperheide
    /Hahn-Meitner-Institut Berlin und Freie Universität Berlin,
    Glienicker Straße 100, D-14091 Berlin, Germany/

Received 16 May 2000; published 9 January 2001

An experimental method is proposed which allows a complete determination
of the complex reflection coefficient for absorptive media for positive
and negative values of the momenta. It makes use of magnetic reference
layers, and is a modification of a recently proposed technique for phase
determination based on polarization measurements. The complex reflection
coefficient resulting from a simulated application of the method is used
for a reconstruction of the scattering density profiles of absorptive
nonmagnetic media by inversion.

©2001 The American Physical Society

*URL:* http://link.aps.org/abstract/PRB/v63/e045414
*DOI:* 10.1103/PhysRevB.63.045414
*PACS:* 61.12.Ha

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