Acta Crystallographica Section A
Acta Crystallographica
Section A FOUNDATIONS AND ADVANCES

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FOUNDATIONS
ADVANCES

Volume 51| Part 1

ISSN: 2053-2733

January 1995 issue

Highlighted illustration

Cover illustration: Imaging-plate recording of crystal truncation rod (CTR) scattering from an Si(111) wafer taken by oscillating the sample over an angular range of ± 4.9 ° perpendicular to <111>. Courtesy of T. Shimura and J. Harada, Photon Factory, Japan.

international union of crystallography

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Notes for Authors

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research papers

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Refinement of crystal structure parameters using convergent-beam electron diffraction: the low-temperature phase of SrTiO₃

K. Tsuda and M. Tanaka

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Simulated annealing for phasing using spatial constraints

P. Béran and A. Szöke

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On the calculation of the lattice energy of ionic crystals using the detailed electron-density distribution. I. Treatment of spherical atomic distributions and application to NaF

Z. Su and P. Coppens

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An empirical correction for absorption anisotropy

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A matrix-operator approach to reflection high-energy electron diffraction theory

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On the single-pixel approximation in maximum-entropy analysis

S. Kumazawa, M. Takata and M. Sakata

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A new commensurate modulated structure in orthoclase

H. Xu, D. R. Veblen and G. Luo

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The vertex contribution to the Kirste–Porod term

S. Ciccariello and R. Sobry

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Restrained real-space macromolecular atomic refinement using a new resolution-dependent electron-density function

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Use of the minimal function for partial structure development in direct methods

D. A. Langs, R. Miller, H. A. Hauptman and G. W. Han

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Determination of Laue class from diffraction data of polycrystalline materials

M. Ohmasa and K. Ohsumi

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Comment on Enantiomorphism and multiple-beam X-ray diffraction by Roberto Colella (1994)

H. Burzlaff, J. Lange and H. Zimmermann

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short communications

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The use of the non-negativity criterion and histogram matching as figures of merit in direct methods of phase determination

C. Smykalla and P. T. Beurskens

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Space groups rare for organic structures. III. Symmorphism and inherent molecular symmetry. Errata

A. J. C. Wilson

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books received

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Time-of-flight diffraction at pulsed neutron sources edited by J. D. Jorgensen and A. J. Schultz

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Advances

A selection of Advances articles are given below.

Approximating coincidence - turning a new page for bicrystallography. S. Patala (2017). Acta Cryst. A73, 85-86.

A projection-based reformulation of the coincident site lattice Sigma for arbitrary bicrystals at finite temperature. B. Runnels (2017). Acta Cryst. A73, https://doi.org/10.1107/S205327331700122X.

To superspace and beyond. M. S. Senn (2017). Acta Cryst. A73, 1-3.

A general algorithm for generating isotropy subgroups in superspace. H. T. Stokes & B. J. Campbell (2017). Acta Cryst. A73, https://doi.org/10.1107/S2053273316017629.

Special issues

Debye scattering equation

Mathematical crystallography

Bragg centennial issue

Laue centennial issue

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