Neutron diffraction studies of a double-crystal (+<i>n</i>,–<i>m</i>) setting containing a fully asymmetric diffraction geometry of a bent perfect crystal with output beam expansion

Mikula, P.; Vrána, M.; Pilch, Ján; Seong, Baek-Seok; Woo, Wanchuck; Em, V. T.

doi:10.1107/s1600576714001964

Cited by 8 publications

(1 citation statement)

References 15 publications

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“…Theoretically, the vertical and horizontal focusing radii should be identical for Si(400) and Si(311) at the same take-off angle. However, there are some differences in these tests, possibly due to asymmetric reflection in Si(311) (Seong et al, 2010;Mikula et al, 2014). These results indicate that the neutron flux at the sample position is comparable to that of other neutron diffractometers.…”

Section: Neutron Flux At the Sample Positionmentioning

confidence: 57%

HETU: a new high-resolution stress and texture neutron diffractometer at China Mianyang Research Reactor

Wang,

Zhong,

Lin

et al. 2023

J Appl Cryst

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HETU is a new high-resolution stress and texture neutron diffractometer installed at the C1 neutron guide at China Mianyang Research Reactor. The diffractometer is designed for precise residual stress and texture analysis of engineering components, as well as in situ investigations under various sample environments for engineering materials. The wavelength range of monochromatic incident neutrons is 1.634–5.800 Å, provided either by a double-focusing perfect single-crystal silicon monochromator in high instrument resolution mode or by a highly oriented pyrolytic graphite monochromator in high neutron flux mode. The intrinsic peak widths of HETU have been measured using a standard silicon powder sample, and residual stress measurements of an aluminium alloy shrink-fit ring and plug have been carried out. These results demonstrate that HETU is a reliable and appropriately designed diffractometer for promoting materials investigation.

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Section: Neutron Flux At the Sample Positionmentioning

confidence: 57%

HETU: a new high-resolution stress and texture neutron diffractometer at China Mianyang Research Reactor

Wang,

Zhong,

Lin

et al. 2023

J Appl Cryst

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Neutron diffraction studies of a double-crystal (+n,-m) setting containing a fully asymmetric diffraction geometry (FAD) of a bent perfect crystal (BPC)

et al. 2017

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In this paper, some results of neutron diffraction properties of the double-crystal Si(111) + Si(311) setting containing two bent perfect crystals, but with the second one – analyzer in the fully asymmetric diffraction geometry are presented. Both fully asymmetric diffraction geometries, with the output beam compression as well as the output beam expansion, were tested for the sake of possible applications.

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Dispersive double bent crystal monochromators Si(111) + Si(311) and Si(111) + Si(400) with a strongly asymmetric diffraction geometry of the analyzer for powder diffractometry

et al. 2019

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In this paper, some results of neutron diffraction properties of the dispersive double-crystal Si(111) + Si(311) and Si(111) + Si(400) monochromator settings containing two bent perfect crystals but with the second one – analyzer in the strongly asymmetric diffraction geometry, are presented. For the sake of possible applications, both double crystal settings were tested in the orientation of the second crystal for the output beam compression geometry. Powder diffraction test was carried out on a α-Fe(211) pin of the diameter of 2 mm. Contrary to the Si(111) + Si(400) setting, an excellent resolution represented by full width at half maximum in the (Δd/d)-scale was obtained for the Si(111) + Si(311) double crystal monochromator in the parallel as well as in the antiparallel diffraction geometry.

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Neutron diffraction studies of a double-crystal (+n,–m) setting containing a fully asymmetric diffraction geometry of a bent perfect crystal with output beam expansion

Cited by 8 publications

References 15 publications

HETU: a new high-resolution stress and texture neutron diffractometer at China Mianyang Research Reactor

HETU: a new high-resolution stress and texture neutron diffractometer at China Mianyang Research Reactor

Neutron diffraction studies of a double-crystal (+n,-m) setting containing a fully asymmetric diffraction geometry (FAD) of a bent perfect crystal (BPC)

Dispersive double bent crystal monochromators Si(111) + Si(311) and Si(111) + Si(400) with a strongly asymmetric diffraction geometry of the analyzer for powder diffractometry

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