Study of X-ray diffraction from a surface acoustic wave in the grazing geometry with allowance for the curvature of the unperturbed crystal surface

A. R. Mkrtchyan, Vagan Rashidovich Kocharyan, L. V. Levonyan, G. K. Khachaturyan

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Fresnel X-ray diffraction from a concave crystal surface in the presence of a surface acoustic wave (SAW) has been considered for grazing angles of incidence in noncoplanar symmetric Laue geometry. It is shown that the main peak and diffraction satellites are focused at different distances from a crystal. The effect of deviation from the Bragg angle, the spectral line width, and the SAW amplitude on the X-ray diffraction pattern has been analyzed. It is established that the contrast of an X-ray diffraction pattern of an SAW in Bragg-Laue grazing geometry is related to the character of irregularities of the crystal surface, and the pattern details depend on the measurement mode. The sensitivity of the method is about a nanometer. The focal image of the SAW serves as a scale landmark for determining the crystal surface characteristics.

Original languageEnglish
JournalCrystallography Reports
Volume51
Issue numberSUPPL. 1
DOIs
Publication statusPublished - Dec 2006
Externally publishedYes

Fingerprint

grazing
allowances
crystal surfaces
Surface waves
curvature
Acoustic waves
X ray diffraction
Crystals
acoustics
Geometry
geometry
diffraction
Diffraction patterns
x rays
diffraction patterns
spectral line width
Bragg angle
landmarks
irregularities
Linewidth

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

@article{e344170067ab464c841a6208c05d10cb,
title = "Study of X-ray diffraction from a surface acoustic wave in the grazing geometry with allowance for the curvature of the unperturbed crystal surface",
abstract = "Fresnel X-ray diffraction from a concave crystal surface in the presence of a surface acoustic wave (SAW) has been considered for grazing angles of incidence in noncoplanar symmetric Laue geometry. It is shown that the main peak and diffraction satellites are focused at different distances from a crystal. The effect of deviation from the Bragg angle, the spectral line width, and the SAW amplitude on the X-ray diffraction pattern has been analyzed. It is established that the contrast of an X-ray diffraction pattern of an SAW in Bragg-Laue grazing geometry is related to the character of irregularities of the crystal surface, and the pattern details depend on the measurement mode. The sensitivity of the method is about a nanometer. The focal image of the SAW serves as a scale landmark for determining the crystal surface characteristics.",
author = "Mkrtchyan, {A. R.} and Kocharyan, {Vagan Rashidovich} and Levonyan, {L. V.} and Khachaturyan, {G. K.}",
year = "2006",
month = "12",
doi = "10.1134/S106377450607008X",
language = "English",
volume = "51",
journal = "Crystallography Reports",
issn = "1063-7745",
publisher = "Maik Nauka-Interperiodica Publishing",
number = "SUPPL. 1",

}

TY - JOUR

T1 - Study of X-ray diffraction from a surface acoustic wave in the grazing geometry with allowance for the curvature of the unperturbed crystal surface

AU - Mkrtchyan, A. R.

AU - Kocharyan, Vagan Rashidovich

AU - Levonyan, L. V.

AU - Khachaturyan, G. K.

PY - 2006/12

Y1 - 2006/12

N2 - Fresnel X-ray diffraction from a concave crystal surface in the presence of a surface acoustic wave (SAW) has been considered for grazing angles of incidence in noncoplanar symmetric Laue geometry. It is shown that the main peak and diffraction satellites are focused at different distances from a crystal. The effect of deviation from the Bragg angle, the spectral line width, and the SAW amplitude on the X-ray diffraction pattern has been analyzed. It is established that the contrast of an X-ray diffraction pattern of an SAW in Bragg-Laue grazing geometry is related to the character of irregularities of the crystal surface, and the pattern details depend on the measurement mode. The sensitivity of the method is about a nanometer. The focal image of the SAW serves as a scale landmark for determining the crystal surface characteristics.

AB - Fresnel X-ray diffraction from a concave crystal surface in the presence of a surface acoustic wave (SAW) has been considered for grazing angles of incidence in noncoplanar symmetric Laue geometry. It is shown that the main peak and diffraction satellites are focused at different distances from a crystal. The effect of deviation from the Bragg angle, the spectral line width, and the SAW amplitude on the X-ray diffraction pattern has been analyzed. It is established that the contrast of an X-ray diffraction pattern of an SAW in Bragg-Laue grazing geometry is related to the character of irregularities of the crystal surface, and the pattern details depend on the measurement mode. The sensitivity of the method is about a nanometer. The focal image of the SAW serves as a scale landmark for determining the crystal surface characteristics.

UR - http://www.scopus.com/inward/record.url?scp=33751522894&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=33751522894&partnerID=8YFLogxK

U2 - 10.1134/S106377450607008X

DO - 10.1134/S106377450607008X

M3 - Article

VL - 51

JO - Crystallography Reports

JF - Crystallography Reports

SN - 1063-7745

IS - SUPPL. 1

ER -