Dynamical theory of x-ray diffraction at Bragg angles near<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mfrac><mml:mrow><mml:mi>π</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:mfrac></mml:math>

Caticha, Ariel; Caticha‐Ellis, S.

doi:10.1103/physrevb.25.971

Cited by 116 publications

(30 citation statements)

References 8 publications

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“…The dynamical theory of diffraction predicts that at this angle the Darwin-Prins rocking curve has an extreme angular width, which typically exceeds the mosaic spread caused by strain in most metal crystals [21,22]. The coherence of the standing waves is thus maintained even in imperfect samples.…”

Section: (Received 28 August 1998)mentioning

confidence: 99%

Dynamical Diffraction and X-Ray Standing Waves from Atomic Planes Normal to a Twofold Symmetry Axis of the Quasicrystal AlPdMn

et al. 1999

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Section: (Received 28 August 1998)mentioning

confidence: 99%

Dynamical Diffraction and X-Ray Standing Waves from Atomic Planes Normal to a Twofold Symmetry Axis of the Quasicrystal AlPdMn

et al. 1999

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“…Here we chose to solve the fourth-order equation analytically without further approximation (Zegenhagen et al, 1990;Graeff & Materlik, 1982;Bru È mmer et al, 1979;Caticha & Caticha-Ellis, 1982).…”

Section: Theorymentioning

confidence: 99%

Backscattering X-ray standing waves in the XUV region

Grehk

Drube

Kipp

et al. 2001

J Synchrotron Radiat

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It is demonstrated that Bragg re¯ection of XUV radiation can be used to study structural properties of crystalline materials with large unit cells. A standing-wave ®eld is formed in a layered TiSe 2 single crystal for a near-backscattering geometry (Â = 88.5 ). The partial electron yield is measured as a function of photon energy across the (001) Bragg re¯ection condition (h# 9 1033 eV) and its characteristic modulation is compared with the results derived from dynamical diffraction theory in the two-wave approximation. The data reveal a large amount of disorder along the c-axis.

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“…The X-ray near-back-diffraction regime is especially interesting for X-ray optics: it combines very large angular acceptance (the Darwin width can be orders of magnitude bigger than the usual values when the Bragg angle approaches 90 °) with high energy resolution (Kohra & Matsushita, 1972;B~mmer, Hrche & Nieber, 1979;Caticha & Caticha-Ellis, 1982;Graeff & Materlik, 1982;Hashizume & Nakahata, 1988). In this diffraction regime, the energy resolution can be as good as the intrinsic energy resolution and the goniometry is much less sensitive than for usual Bragg angles.…”

Section: Introductionmentioning

confidence: 99%

X-ray Back-Diffraction Profiles with an Si (111) Plate

Cusatis¹,

Udron²,

Mazzaro³

et al. 1996

Acta Cryst Sect A

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A two-and, alternatively, a four-crystal monochromator were used for simultaneous measurements of the profiles backward (h) and forward (o) diffracted by a thin Si (111) crystal plate for diffraction angles up to exactly 90 ° at DCI-LURE (Orsay). It is shown that the set-up with a four-crystal monochromator allows the characterization of the back-diffraction region for any crystal plate reflection. Asymmetry and full width at half-maximum (FWHM) of the experimental backwarddiffraction profiles are analyzed. Possible simultaneous diffractions occurring near 90 ° incidence, giving extra peaks in the forward-diffracted profiles, are studied. The good contrast of the o-beam profiles suggests that the back-diffracted o beam could be used as a highly monochromatic beam.

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Dynamical theory of x-ray diffraction at Bragg angles nearπ2

Cited by 116 publications

References 8 publications

Dynamical Diffraction and X-Ray Standing Waves from Atomic Planes Normal to a Twofold Symmetry Axis of the Quasicrystal AlPdMn

Dynamical Diffraction and X-Ray Standing Waves from Atomic Planes Normal to a Twofold Symmetry Axis of the Quasicrystal AlPdMn

Backscattering X-ray standing waves in the XUV region

X-ray Back-Diffraction Profiles with an Si (111) Plate

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