A Multilayer‐Coated Diffraction‐Grating Device for Polarized and Unpolarized Neutron Interferometry
作者:
M. Mâaza,
B. Pardo,
期刊:
Journal of Applied Crystallography
(WILEY Available online 1995)
卷期:
Volume 28,
issue 1
页码: 20-25
ISSN:1600-5767
年代: 1995
DOI:10.1107/S0021889894007788
出版商: International Union of Crystallography
数据来源: WILEY
摘要:
This work is devoted to a new generation of cold‐neutron interferometers based on bidimensional diffraction. The use of multilayer coatings in the classical Ioffe difffraction‐grating neutron interferometer is proposed. This interferometer combines the properties of two periodic structures, namely the dispersion by a diffraction grating and the high reflectivity ensured by the multilayer coating. All the cold‐neutron interferometer devices (two diffraction gratings and two mirrors) must be multilayered with Ni–Ti or Fe–Ge for unpolarized or polarized neutron interferometry experiments, respectively. The computed results, giving the characteristics of the multilayer‐coated amplitude diffraction grating are discussed within a kinematic model. An Ni–Ti multilayered amplitude diffraction grating for use at λ = 5 Å is presen
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