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 language | English |
|---|---|
| Journal | Crystallography Reports |
| Volume | 51 |
| Issue number | SUPPL. 1 |
| DOIs | |
| Publication status | Published - Dec 2006 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Condensed Matter Physics
Cite this
Study of X-ray diffraction from a surface acoustic wave in the grazing geometry with allowance for the curvature of the unperturbed crystal surface. / Mkrtchyan, A. R.; Kocharyan, Vagan Rashidovich; Levonyan, L. V.; Khachaturyan, G. K.
In: Crystallography Reports, Vol. 51, No. SUPPL. 1, 12.2006.Research output: Contribution to journal › Article
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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 -