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The neutron transmission of single-crystal sapphire filters (1993)

Mildner, D. F. R. ; Arif, M. ; Stone, C. A. ; [et al.]

Copenhagen : International Union of Crystallography (IUCr)

Applied crystallography online 26 (1993), S. 438-447

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ISSN: 1600-5767

Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001

Topics: Geosciences , Physics

Notes: The wavelength dependence of the transmission probability of a beam of neutrons through super optical quality single-crystal sapphire at room temperature has been measured. The measurements extend over the neutron wavelength range 0.05–1.2 nm. Sharp dips in the transmission caused by Bragg reflection are not found. The data below the dip around 0.2 nm in the cross section have been fitted to a function that accounts for multiphonon scattering. Measurements performed on single crystals with increased lattice distortion (or mosaic spread) show an increase in the cross section at long wavelengths. The attenuation of room-temperature Al2O3 is not significantly different from that for liquid-nitrogen-cooled MgO.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1107/S0021889893000433

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