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Subwavelength focusing of micro grating-Fresnel lens

โœ Scribed by Ma, Long; Lin, Jie; Ma, Yuan; Jin, Peng; Tan, Jiubin

Book ID
120634249
Publisher
Elsevier Science
Year
2013
Tongue
English
Weight
365 KB
Volume
298-299
Category
Article
ISSN
0030-4018

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We have developed a Fresnel-type focusing device for cold neutrons fabricated using single crystals of magnesium fluoride. This stacked-lens device using 50 elements (with 50 beam-bending interfaces) demonstrated a focal length of 5 m with a good transmission of 0.829 for 1:14 nm neutrons. The focus