Ultra small angle neutron scattering instrument at C1-3 in JRR-3M

Takahashi, Toshio; Hashimoto, Mitsuhiro; Nakatani, Shinichiro

doi:10.1016/s0022-3697(99)00180-8

Cited by 7 publications

(2 citation statements)

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“…This suggests that the potential applicability of this approach to analysis of geological materials needs to be more fully explored. (Compton and Allison 1935;Fankuchen and Jellinek 1945;Bonse and Hart 1965;Shull 1973;Schwahn et al 1985;Agamalian et al 1997;Bellmann et al 1997;Takahashi et al 1999;Borbely et al 2000;Hainbuchner et al 2000;Treimer et al 2001;Jericha et al 2003;Villa et al 2003;Barker et al 2005;Hammouda 2008; M.H. Kim, pers comm.)…”

Section: Geometrical Principles Of Small-angle Scattering Experimentsmentioning

confidence: 99%

Characterization and Analysis of Porosity and Pore Structures

Anovitz

Cole

2015

Reviews in Mineralogy and Geochemistry

849

480

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Section: Geometrical Principles Of Small-angle Scattering Experimentsmentioning

confidence: 99%

Characterization and Analysis of Porosity and Pore Structures

Anovitz

Cole

2015

Reviews in Mineralogy and Geochemistry

849

480

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“…By cutting the crystal and inserting an absorber between adjacent reflectors, Agamalian et al (1997) were able to reduce the intensity of the parasitic background by two orders of magnitude and thus were the first to produce a rocking curve with N/S 10 À4 . Currently, several other DCD instruments of this type with low background (N/S 10 À4 ) and high q resolution (q min = 3 Â 10 À5 Å À1 ) are in operation around the world (Agamalian et al, 1997;Bellmann et al, 1998;Takahashi et al, 1999;Borbely et al, 2000;Hainbuchner et al, 2000;Treimer et al, 2001;Jericha et al, 2003;Villa et al, 2003) and there is a proposal to build a new time-of-flight DCD instrument at the Spallation Neutron Source that will utilize higher order reflections for even higher q resolution (Carpenter et al, 2003).…”

Section: Introductionmentioning

confidence: 99%

Design and performance of a thermal-neutron double-crystal diffractometer for USANS at NIST

et al. 2005

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An ultra-high-resolution small-angle neutron scattering (USANS) doublecrystal diffractometer (DCD) is now in operation at the NIST Center for Neutron Research (NCNR). The instrument uses multiple reflections from large silicon (220) perfect single crystals, before and after the sample, to produce both high beam intensity and a low instrument background suitable for small-angle scattering measurements. The minimum detector background to beam intensity ratio (noise-to-signal, N/S) for q ! 5 Â 10 À4 Å À1 is 4 Â 10 À7 . The instrument uses 2.38 Å wavelength neutrons on a dedicated thermal neutron beam port, producing a peak flux on the sample of 17 300 cm À2 s À1 . The typical measurement range of the instrument extends from 3 Â 10 À5 Å À1 to 5 Â 10 À3 Å À1 in scattering wavevector (q), providing information on material structure over the size range from 0.1 mm to 20 mm. This paper describes the design and characteristics of the instrument, the mode of operation, and presents data that demonstrate the instrument's performance.

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