Results 341 to 350 of about 2,406,257 (383)

Automatic processing of rotation diffraction data from crystals of initially unknown symmetry and cell constants

, 1993
An algorithm has been developed for the automatic interpretation of a given set of observed reciprocal-lattice points. It extracts a reduced cell and assigns indices to each reflection by a graph-theoretical implementation of the local indexing method ...
W. Kabsch
semanticscholar   +1 more source

Tutorial on Powder X-ray Diffraction for Characterizing Nanoscale Materials.

ACS Nano, 2019
Characterizing Nanoscale Materials Powder X-ray diffraction (XRD) is a common characterization technique for nanoscale materials. Analysis of a sample by powder XRD provides important information that is complementary to various microscopic and ...
Cameron F. Holder, R. Schaak
semanticscholar   +1 more source

Diffraction and diffraction radiation

Uspekhi Fizicheskih Nauk, 2000
Similarities and differences between two closely related phenomena, diffraction and diffraction radiation, are discussed in the context of a scalar theory.
Evgenii A Galst'yan, Boris M Bolotovskiĭ   +1 more
openaire   +2 more sources

Crystal structure and hydrogen-bonding system in cellulose Ibeta from synchrotron X-ray and neutron fiber diffraction.

Journal of the American Chemical Society, 2002
The crystal and molecular structure together with the hydrogen-bonding system in cellulose Ibeta has been determined using synchrotron and neutron diffraction data recorded from oriented fibrous samples prepared by aligning cellulose microcrystals from ...
Y. Nishiyama, P. Langan, H. Chanzy
semanticscholar   +1 more source

A uniform geometrical theory of diffraction for an edge in a perfectly conducting surface

, 1974
A compact dyadic diffraction coefficient for electromagnetic waves obliquely incident on a curved edse formed by perfectly conducting curved ot plane surfaces is obtained.
R. Kouyoumjian, P. Pathak
semanticscholar   +1 more source

Geometrical theory of diffraction.

Journal of the Optical Society of America, 1962
The geometrical theory of diffraction is an extension of geometrical optics which accounts for diffraction. It introduces diffracted rays in addition to the usual rays of geometrical optics.
J. Keller
semanticscholar   +1 more source

Diffraction Gratings and Applications

, 2018
A brief history of spectral analysis fundamental properties of gratings the types of diffraction gratings efficiency behaviour of plane reflection gratings transmission gratings icily gratings concave gratings surfacewaves and grating anomalies waveguide,
E. Loewen, E. Popov
semanticscholar   +1 more source

Diffraction-free beams.

Physical Review Letters, 1987
It was recently predicted that nondiffracting beams, with beam spots as small as a few wavelengths, can exist and propagate in free space. We report the first experimental investigation of these beams.
J. Durnin, J. J. Miceli, J. Eberly
semanticscholar   +1 more source

The Scherrer equation and the dynamical theory of X-ray diffraction.

Acta Crystallographica Section A: Foundations and Advances, 2016
The Scherrer equation is a widely used tool to determine the crystallite size of polycrystalline samples. However, it is not clear if one can apply it to large crystallite sizes because its derivation is based on the kinematical theory of X-ray ...
F. Muniz, M. Miranda, Cássio Morilla Dos Santos, J. Sasaki   +3 more
semanticscholar   +1 more source

Concluding Diffractions | Diffracting Conclusions

2021
The concluding chapter re-addresses the situatedness of the research and book overall and offers an opening-conclusion explicitly acknowledging some of the limitations of the research and yet also supports ending on an opening as an affirmative position: that no research is finished and fixed, but an ongoing process of discovery, opening up new ...
openaire   +2 more sources