Výsledky vyhledávání - "R B, von Dreele"

Autor: K. M. Ginell, C. Horn, Brian H. Toby, R. B. Von Dreele

Publikováno v: Powder Diffraction. 34:184-188

The General Structure Analysis System (GSAS-II) package provides materials and crystallographic analysis for all types of diffraction data. It was initially made available with very limited capabilities, but over much of the last decade the features

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::cad71d049ed331dcfc1118c326c8897e
https://doi.org/10.1017/s0885715619000241

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A scripting interface for GSAS-II

Autor: M.K.Y. Chan, J.H. O'Donnell, Brian H. Toby, R. B. Von Dreele

Publikováno v: Journal of Applied Crystallography. 51:1244-1250

The GSAS-II suite is a complete crystallographic analysis package for all types of X-ray and neutron diffraction data, suited for fitting models ranging from simple materials to proteins, and designed around an integrated graphical user interface. Th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::35eac49cce2c24784c8d0007278ec2cb
https://doi.org/10.1107/s1600576718008075

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A scanning CCD detector for powder diffraction measurements

Autor: Brian H. Toby, T.J. Madden, R. B. Von Dreele, Jonathan Baldwin, Matthew R. Suchomel

Publikováno v: Journal of Applied Crystallography. 46:1058-1063

Several different approaches have traditionally been used for detection of X-ray powder diffraction patterns, including area detectors, point detectors and position-sensitive detectors. Each has advantages. This paper discusses use of a low-cost CCD

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d026e91f47f782a5b6e7fa99ef03f308
https://doi.org/10.1107/s0021889813013824

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PRESSURE-INDUCED STRUCTURAL-CHANGES IN SUPERCONDUCTING HGBA2CAN-1CUNO2N+2+DELTA (N = 1, 2, 3) COMPOUNDS

Autor: Paolo G. Radaelli, R. B. Von Dreele, D. G. Hinks, James D. Jorgensen, R. L. Hitterman, B.A. Hunter, Hagai Shaked, J. L. Wagner

The crystal structures of superconducting HgBa2CuO4+δ and HgBa2CaCu2O6+δ have been investigated with a pressure up to 0.6 GPa and HgBa2Ca2Cu3O8+δ to 9.2 GPa by neutron powder diffraction. The compressibility along the c-axis is nearly the same for

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa6c9612fcb4b0b3cbe660b357e478f0
https://ora.ox.ac.uk/objects/uuid:8a745b1b-7a2f-4b05-be80-2423452cc092

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Differences between Bond Lengths in Biogenic and Geological Calcite

Autor: Emil Zolotoyabko, G. Mor, R. B. Von Dreele, El'ad N. Caspi, Yael Politi, Steve Weiner, Frédéric Marin, Lia Addadi, J. S. Fieramosca

Publikováno v: Crystal Growth and Design
Crystal Growth and Design, American Chemical Society, 2010, 10 (3), pp.1207-1214. 〈10.1021/cg901195t〉
Crystal Growth & Design
Crystal Growth & Design, American Chemical Society, 2010, 10 (3), pp.1207-1214. ⟨10.1021/cg901195t⟩

8 pages; International audience; We used high-resolution neutron powder diffraction to accurately measure the atomic positions and bond lengths in biogenic and geological calcite. A special procedure for data analysis was developed in order to take i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f1149ae519fae53f6d51b620d23106ca
https://doi.org/10.1021/cg901195t

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Bond lengths differences between the mollusk-made and geological calcium carbonate

Autor: R. B. Von Dreele, El'ad N. Caspi, J. S. Fieramosca, Emil Zolotoyabko

Publikováno v: Materials Science and Engineering: A. 524:77-81

We used high-resolution neutron powder diffraction technique in order to accurately measure the atomic positions and bond lengths in calcium carbonates of biogenic (mollusk-made) and geological origin. As a result, in biogenic calcium carbonate we id

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d722899c192a5542dbc73642fd4d1da6
https://doi.org/10.1016/j.msea.2009.02.048

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On the numerical corrections of time-of-flight neutron powder diffraction data

Autor: R. B. Von Dreele, Maxim Avdeev, S. Short, James D. Jorgensen

Publikováno v: Journal of Applied Crystallography. 40:710-715

Time-of-flight neutron powder diffraction data for NIST Standard Reference Materials have been used to study the adequacy of the peak profile model obtained from a convolution of back-to-back exponentials with a pseudo-Voigt function that is widely u

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::98305b41fd7fc83ba15ba3ff622ea35d
https://doi.org/10.1107/s0021889807030014

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Atomic Structure of Biogenic Aragonite

Autor: R. B. Von Dreele, A. N. Fitch, J. S. Fieramosca, Boaz Pokroy, Emil Zolotoyabko, El'ad N. Caspi

Publikováno v: Chemistry of Materials. 19:3244-3251

Atomic positions in geological aragonite and biogenic aragonite, obtained from several mollusk shells, were precisely measured by high-resolution neutron diffraction, which is more sensitive than X-ray diffraction to the positions of light atoms, C a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9db03d1cb6951e36636665bd45e5ef5f
https://doi.org/10.1021/cm070187u

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Multipattern Rietveld refinement of protein powder data: an approach to higher resolution

Autor: R. B. Von Dreele

Publikováno v: Journal of Applied Crystallography. 40:133-143

By using combinations of multiple protein powder diffraction patterns obtained from an image plate to ad-spacing of 2 Å, which differ by solvent-induced and radiation-damage-induced lattice strains, the powder overlap problem is partially resolved i

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::df24c4e529009ed5f2f6c95f1d85f07b
https://doi.org/10.1107/s0021889806045493

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