Residual stress instrument with double-crystal monochromator at research reactor IR-8

Residual stress instrument with double-crystal monochromator at research reactor IR-8

Residual stress instrument STRESS at 8 MW research reactor IR-8 at National Research Center “Kurchatov Institute” is described. Using double-crystal monochromator PG002(flat)/Si220(horizontal focusing perfect crystal), providing fixed neutron wavelength λ = 1.56 Å, resulted in compact arrangement of...

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Veröffentlicht in:Physica. B, Condensed matter Condensed matter, 2018-12, Vol.551, p.413-416
Hauptverfasser: Em, V.T., Karpov, I.D., Somenkov, V.A., Glazkov, V.P., Balagurov, A.M., Sumin, V.V., Mikula, P., Ŝaroun, J.
Format: Artikel
Sprache:eng
Schlagworte:
Crystal structure
Crystals
Diffraction
Double-crystal monochromator
Ferritic stainless steel
Ferritic stainless steels
Maximal path length
Neutron diffraction
Neutron diffractometer
Nuclear reactors
Residual stress
Studies
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Zusammenfassung:Residual stress instrument STRESS at 8 MW research reactor IR-8 at National Research Center “Kurchatov Institute” is described. Using double-crystal monochromator PG002(flat)/Si220(horizontal focusing perfect crystal), providing fixed neutron wavelength λ = 1.56 Å, resulted in compact arrangement of the instrument, high intensity and low background. The experiments showed that in maximal available path length (76 mm in ferritic steel) the difractometer is comparable with other modern stress-difractometers at more powerful reactors.
ISSN:0921-4526
1873-2135
DOI:10.1016/j.physb.2018.02.042