The dynamical theory of diffraction in a crystal modulated by a surface acoustic wave in the case of spatially restricted X-ray beams

2019 ◽  
Vol 52 (6) ◽  
pp. 1289-1298
Author(s):  
Vasily I. Punegov
Keyword(s):  
Numerical Simulation ◽  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Wave Model ◽  
Dynamical Theory ◽  
Instrumental Function ◽  
X Ray Diffraction ◽  
Reciprocal Space Mapping ◽  
X Ray ◽  
Recurrent Relations

The dynamical theory of X-ray diffraction in a crystal modulated by a surface acoustic wave (SAW) is developed for spatially restricted beams. It is shown that this approach is applicable to X-ray reciprocal space mapping. Rayleigh's surface-wave model is used to describe ultrasonic excitation. Based on the recurrent relations, a numerical simulation of the dynamical diffraction in a crystal modulated by a SAW is performed. Within the framework of the triple-axis diffraction scheme, the effect of the instrumental function on X-ray diffraction data is studied.

Investigation of surface acoustic wave fields in silicon crystals by x-ray diffraction: A dynamical theory approach

2005 ◽  
Vol 97 (11) ◽  
pp. 113505 ◽  
Author(s):  
R. Tucoulou ◽  
O. Mathon ◽  
C. Ferrero ◽  
V. Mocella ◽  
D. V. Roshchupkin ◽  
...  
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Dynamical Theory ◽  
Theory Approach ◽  
X Ray Diffraction ◽  
Wave Fields ◽  
X Ray ◽  
Silicon Crystals

scholarly journals Applications of dynamical theory of X-ray diffraction by perfect crystals to reciprocal space mapping

2017 ◽  
Vol 50 (5) ◽  
pp. 1256-1266 ◽  
Author(s):  
Vasily I. Punegov ◽  
Konstantin M. Pavlov ◽  
Andrey V. Karpov ◽  
Nikolai N. Faleev
Keyword(s):  
Reciprocal Lattice ◽  
Dynamical Theory ◽  
Two Dimensional ◽  
Instrumental Function ◽  
X Ray Diffraction ◽  
Reciprocal Space Mapping ◽  
Lattice Vector ◽  
Reflected Waves ◽  
X Ray ◽  
Special Case

The classical dynamical theory of X-ray diffraction is expanded to the special case of transversely restricted wavefronts of the incident and reflected waves. This approach allows one to simulate the two-dimensional coherently scattered intensity distribution centred around a particular reciprocal lattice vector in the so-called triple-crystal diffraction scheme. The effect of the diffractometer's instrumental function on X-ray diffraction data was studied.

X‐ray diffraction study of surface acoustic wave device under acoustic excitation

1993 ◽  
Vol 73 (12) ◽  
pp. 8647-8649 ◽  
Author(s):  
E. Zolotoyabko ◽  
E. Jacobsohn ◽  
D. Shechtman ◽  
B. Kantor ◽  
J. Salzman
Keyword(s):  
Acoustic Wave ◽  
Diffraction Study ◽  
Surface Acoustic Wave ◽  
Acoustic Excitation ◽  
X Ray Diffraction ◽  
X Ray ◽  
Surface Acoustic Wave Device ◽  
Acoustic Wave Device ◽  
Wave Device

X-ray diffraction from perfect silicon crystals distorted by surface acoustic waves

2000 ◽  
Vol 33 (4) ◽  
pp. 1019-1022 ◽  
Author(s):  
R. Tucoulou ◽  
R. Pascal ◽  
M. Brunel ◽  
O. Mathon ◽  
D. V. Roshchupkin ◽  
...  
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Acoustic Waves ◽  
Crystal Surface ◽  
Source Region ◽  
Surface Acoustic Waves ◽  
X Ray Diffraction ◽  
Zno Film ◽  
Near Surface ◽  
X Ray

High-resolution X-ray diffraction measurements were carried out on ZnO/Si devices under surface acoustic wave excitation and revealed some very clear satellite diffraction peaks that are obtained from the sinusoidal modulation of the near-surface region. This experiment shows that the propagation of a Rayleigh surface acoustic wave in a perfect crystal acts as a dynamical diffraction grating. The variation of the acoustic velocity has been followed across the crystal surface from the acoustic source region (beneath the ZnO film) to the far field region (not covered by the ZnO film).

Coherent and diffuse X-ray scattering in crystals modulated by a surface acoustic wave

2010 ◽  
Vol 43 (3) ◽  
pp. 520-530 ◽  
Author(s):  
Vasily I. Punegov ◽  
Yakov I. Nesterets ◽  
Dmitry V. Roshchupkin
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Diffuse Scattering ◽  
Block Size ◽  
Diffraction Theory ◽  
Crystal Defects ◽  
Reciprocal Space ◽  
X Ray Diffraction ◽  
X Ray ◽  
Main Diffraction Peak

Equations describing the coherent and diffuse scattering in a crystal modulated by a surface acoustic wave (SAW) are derived using the dynamical X-ray diffraction theory. The effect of depth attenuation of the Rayleigh surface wave amplitude on the crystal rocking curve profiles is investigated. Results of the numerical simulation of the dynamical diffraction in a mosaic crystal modulated by a SAW, taking into account a block size distribution, are presented. It is shown that the diffuse scattering is distributed in the reciprocal space not only in the vicinity of the main diffraction peak but also about the satellite diffraction peaks, and this distribution depends on the size fluctuations of the crystal defects. Theoretical reciprocal space maps and rocking curves are compared with the corresponding experimental results.

Characterization of Stress at a Ceramic/Metal Joined Interface by the Vz Technique of Scanning Acoustic Microscopy

2002 ◽  
Vol 124 (3) ◽  
pp. 336-342 ◽  
Author(s):  
Chiaki Miyasaka ◽  
Bernard R. Tittmann ◽  
Shun-Ichiro Tanaka
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Wave Velocity ◽  
Dissimilar Materials ◽  
Acoustic Microscopy ◽  
Scanning Acoustic Microscopy ◽  
X Ray Diffraction ◽  
X Ray ◽  
Wave Velocities

It is well known that the process of heating and then cooling dissimilar materials introduces considerable stress at and near the interface. In this article, first, the surface wave velocity distributions obtained with the Vz curve technique were found to compare well with residual stress distribution measured by the finely collimated X-ray diffraction technique. Second, a delamination was introduced at the interface. The Vz curve technique was then used again to measure the surface acoustic wave velocity along the interface. The defective specimens showed significantly different patterns of surface acoustic wave velocities. Thus, this study presents useful guidelines in discriminating between sound and defective ceramic/metal joints by scanning acoustic microscopy.

X-ray diffraction analysis of the surface acoustic wave propagation in langatate crystal

2008 ◽  
Vol 94 (3) ◽  
pp. 477-484 ◽  
Author(s):  
D. V. Roshchupkin ◽  
A. I. Erko ◽  
L. Ortega ◽  
D. V. Irzhak
Keyword(s):  
Wave Propagation ◽  
Acoustic Wave ◽  
Diffraction Analysis ◽  
Surface Acoustic Wave ◽  
X Ray Diffraction ◽  
Acoustic Wave Propagation ◽  
X Ray
Sign in / Sign up

Export Citation Format

Share Document