Random-walk algorithm for the simulation of neutron diffraction in deformed mosaic crystals

Šaroun, Jan

Number of the records: 1

Random-walk algorithm for the simulation of neutron diffraction in deformed mosaic crystals

1.

SYSNO ASEP	0105591
Document Type	J - Journal Article
R&D Document Type	Journal Article
Subsidiary J	Ostatní články
Title	Random-walk algorithm for the simulation of neutron diffraction in deformed mosaic crystals
Title	Random-walk" algoritmus pro simulaci difrakce neutronů v deformovaných mosaikových krystalech.
Author(s)	Šaroun, Jan (UJF-V)_{RID, ORCID, SAI}
Source Title	Nuclear Instruments & Methods in Physics Research Section A. - : Elsevier - ISSN 0168-9002 Roč. 529, č. 1 (2004), s. 162-165
Number of pages	4 s.
Language	eng - English
Country	US - United States
Keywords	Monte Carlo simulations ; neutron diffraction ; neutron monochromators
Subject RIV	BM - Solid Matter Physics ; Magnetism
R&D Projects	GA202/03/0891 GA ČR - Czech Science Foundation (CSF)
	IAA1048003 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR)
CEZ	AV0Z1048901 - UJF-V
Annotation	A sampling formula is derived for random-walk steps, which simulate neutron transport through mosaic crystals with deformation gradient. The formula describes both purely gradient (elastically deformed) and undeformed mosaic crystals as limit cases. Simulations of reflection in a mosaic Ge crystal at asymmetric (Fankuchen defocusing) reflection geometry are shown as an example. The results demonstrate the effects of crystal deformation on reflectivity, neutron propagation inside the crystal and spatial profile of the diffracted beam.
Workplace	Nuclear Physics Institute
Contact	Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228
Year of Publishing	2005

Number of the records: 1