Recent development of multilayer neutron mirror at KURRI

We have succeeded in fabricating m=4.8 Ni/Ti and m=5.1 NiC/Ti supermirrors with high reflectivity and small d-spacing multilayer monochromator using ion beam sputtering instrument installed at KURRI. Here the number of m is a measure of critical angle in unit of critical angle of nickel. The reflect...

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Bibliographic Details
Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2004-08, Vol.529 (1), p.54-58
Main Authors: Hino, M., Sunohara, H., Yoshimura, Y., Maruyama, R., Tasaki, S., Yoshino, H., Kawabata, Y.
Format: Article
Language:English
Subjects:
Ion beam sputter
Multilayer mirror
Neutron supermirror
Small d-spacing
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Summary:We have succeeded in fabricating m=4.8 Ni/Ti and m=5.1 NiC/Ti supermirrors with high reflectivity and small d-spacing multilayer monochromator using ion beam sputtering instrument installed at KURRI. Here the number of m is a measure of critical angle in unit of critical angle of nickel. The reflectivity is above 0.6 for the m=5.1 NiC/Ti supermirror in which number of layer is 3000. The reflectivity is 0.065 at Bragg condition for the Ni/Ti monochromator (d=2.68 nm) in which number of layer is 10 000.
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2004.04.176