Neutron Optics with Multilayer Monochromators

  • A. M. Saxena
  • C. F. Majkrzak
Part of the Basic Life Sciences book series (BLSC, volume 27)


A multilayer monochromator is made by depositing thin films of two materials in an alternating sequence on a glass substrate. This makes a multilayer periodic in a direction perpendicular to the plane of the films, with a d-spacing equal to the thickness of one bilayer. Neutrons of wavelength λ incident on a multilayer will be reflected at an angle θ given by the Bragg relation nλ = 2d sinθ, where n is the order of reflection. The use of thin-film multilayers for monochromating neutrons was first suggested by Schoenborn et al. (10). Diffraction properties of such multilayers were studied by Saxena and Schoenborn (8,9), Ebisawa et al. (1), Gukasov et al. (2), and Saxena and Majkrzak (7). Lynn et al. (3) and Majkrzak et al. (4) showed that multilayers made of suitable materials can also be used as very efficient polarizers of neutrons. Mezei (6), Ebisawa et al. (1), and Scharpf (11) developed supermirrors by introducing a continuous variation in d-spacings of multilayers.


Incident Beam Neutron Beam Beam Divergence Collimation Angle Mosaic Spread 
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Copyright information

© Springer Science+Business Media New York 1984

Authors and Affiliations

  • A. M. Saxena
    • 1
  • C. F. Majkrzak
    • 1
  1. 1.Brookhaven National LaboratoryUptonUSA

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