2017
DOI: 10.1134/s0020441217040042
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A double-crystal monochromator for neutron stress diffractometry

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Cited by 12 publications
(5 citation statements)
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“…The stress distribution was studied on a STRESS neutron diffractometer on an IR-8 reactor in the National Research Center "Kurchatov Institute" [19][20][21]. To decrease the time of measurements of a neutron beam and obtain the information on the distribution of stresses over the volume of a prism, the measurements were performed by the following scheme.…”
Section: Measurement Of Stresses By the Neutron Diffraction Methodsmentioning
confidence: 99%
“…The stress distribution was studied on a STRESS neutron diffractometer on an IR-8 reactor in the National Research Center "Kurchatov Institute" [19][20][21]. To decrease the time of measurements of a neutron beam and obtain the information on the distribution of stresses over the volume of a prism, the measurements were performed by the following scheme.…”
Section: Measurement Of Stresses By the Neutron Diffraction Methodsmentioning
confidence: 99%
“…Neutron diffraction measurements were carried out on the STRESS diffractometer at the IR-8 research reactor of the Kurchatov Institute in Moscow (Russia). A double monochromator made of pyrolytic graphite (PG002) and a focusing silicon crystal (Si220) [ 50 , 51 ], which outputs a monochromatic neutron beam with a wavelength λ = 1.548 Å, is used. The diffraction peak α-Ti(103) of titanium at a scattering angle of 2θ ≈ 71.40° was used in the present study, as in lamellar Ti-6Al-4V, the α phase accounts for around 90% of the crystallographic planes at room temperature.…”
Section: Methodsmentioning
confidence: 99%
“…2) is that, for the first time in stress diffractometry, it uses a PG002/Si220 double monochromator, consisting of a plate made of flat pyrolytic graphite with reflecting plane and a curved perfect silicon single crystal focusing in the horizontal plane with reflecting plane . The use of a double monochromator made it possible to reduce the level of background and place the monochromator and instrument closer to the exit from the reactor channel, thus increasing the lightgathering power of the instrument [7][8]. The monochromator outputs a monochromatic neutron beam with a wavelength of 1.55 Å, which increases the neutron penetration depth in ferritic steel [9] and is convenient for measuring stresses for most industrially used metals [7].…”
Section: Stress Neutron Diffractometermentioning
confidence: 99%
“…The use of a double monochromator made it possible to reduce the level of background and place the monochromator and instrument closer to the exit from the reactor channel, thus increasing the lightgathering power of the instrument [7][8]. The monochromator outputs a monochromatic neutron beam with a wavelength of 1.55 Å, which increases the neutron penetration depth in ferritic steel [9] and is convenient for measuring stresses for most industrially used metals [7]. A helium-filled PSD with a work-…”
Section: Stress Neutron Diffractometermentioning
confidence: 99%
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