Compilation of x-ray cross sections UCRL-50174, sections I, II revision 1, III, IV

McMaster, W.H.; Grande, N.K. Del; Mallett, J.H.; Hubbell, J.H.

doi:10.1016/s0092-640x(70)80026-2

Cited by 231 publications

(177 citation statements)

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“…a cryostat for low temperature work, or high field work, or a pressure cell) are included in the present design: some sample stages can accept a load up to ϳ200 kg, and the clearance at the sample can be Table 2 Parameters for Si back-reflections near room temperature. Note that this has been calculated based on [34,35] using code based on [36]. However, the form factors in [34] extend only to momentum transfers Ͻ19 Å Ϫ1 so these values are extrapolated.…”

Section: Inelastic X-ray Scatteringmentioning

confidence: 99%

An X-ray scattering beamline for studying dynamics

Baron

Tanaka

Goto

et al. 2000

Journal of Physics and Chemistry of Solids

251

118

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Section: Inelastic X-ray Scatteringmentioning

confidence: 99%

An X-ray scattering beamline for studying dynamics

Baron

Tanaka

Goto

et al. 2000

Journal of Physics and Chemistry of Solids

251

118

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“…In the final cycles of refinement, anisotropic temperature factors and isotropic extinction corrections, altogether 35 variables, were ineluded. The scattering factors used were for neutral atoms (McMaster, Kerr del Grande, Mallet & Hubbel, 1969) and the Af' and Af" values for Mo Ka radiation were taken from International Tables for X-ray Crystallography (1962). The quantity minimized was Z, w(lfol -IFcl) 2.…”

Section: The Crystal Structure Of Cs2vso13mentioning

confidence: 99%

The crystal structure of Cs2V5O13

Waltersson¹

1977

Acta Crystallogr Sect B

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Measurements on a single crystal of the electrical conductivity in the range 90--400 K showed the compound to be a semiconductor with an activation energy close to 0-07 eV.We wish to thank Dr Karl-Axel Wilhelmi for valuable discussions and Professor Arne Magn6li for his kind interest. Thanks are also due to Dr Sven Westman for revising the English text and to Mr Tomasz Niklewski for measurements of the density and the electrical conductivity.The investigation has been financially supported by the Swedish Natural Science Research Council.References FORSLUND, B. (1975 The crystal structure of Cs2VsOt3 has been determined and refined to a final R, value of 0.019 from 267 independent reflexions and 35 variables. Three-dimensional X-ray diffractometer data (Mo Ka radiation) were used. The space group is I4mm (No. 107), and the unit-cell dimensions are a = 7.762(I), c = 11.746(2) A, V = 707.7 ,&, Z = 2. The new structure type can be visualized in different, complementary ways; it can be regarded as composed of VO 4 tetrahedra and VO~ square pyramids in the ratio 4 : 1 (joined exclusively by comer-sharing) forming 2 2-oo(V50~3) layers, held together by Cs + ions: or composed of isolated isocyclic rings of V40~-tetramers and VO 2+ (vanadyl) and Cs + ions. The observed, averaged V-O distances for the fourand five-coordinated V atoms are 1.71 and 1.96 A respectively: the V-O distance in the vanadyl ion is 1.587(16) A. The Cs + ions have twelve nearest O neighbours in the range 3-24-3.54 /~,. The structure is compared with those of K2V308 and K3VsOI4.

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“…The absorption coefficient/z = 0.241 cm -1 has been determined from the tables compiled by McMaster, Kerr del Grande, Mallett & Hubbell (1969). The absorption correction factors are calculated by a Gaussian quadrature method (Coppens, Leiserowitz & Rabinovich, 1965) using a grid of 6 x 6 x 6 points.…”

Section: Data Reductionmentioning

confidence: 99%

The electron density of beryllium derived from 0·12 Å γ-ray diffraction data

Hansen¹,

Schneider²,

Yelon³

et al. 1987

Acta Cryst Sect A

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A large set of structure factors for beryllium has been measured with a 0.12/~ y-ray diffractometer. The present data are in good agreement with other recent X-ray and y-ray diffraction measurements. Extinction was significant though not very strong. Deformation density maps confirm that the bonding goes through the tetrahedral holes of the hexagonal close-packed structure. Comparisons with band-structure calculations indicate that the local-density approximation to the density functional theory is valid for beryllium. The quality of the data, combined with the earlier experimental results, is sufficient to demonstrate that the structure factors are sensitive to the valence electron hybridization even at high momentum transfer [(sin 0)/A > 0.75 A-I]. Core electron deformation is a much smaller effect.

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Compilation of x-ray cross sections UCRL-50174, sections I, II revision 1, III, IV

Cited by 231 publications

References 0 publications

An X-ray scattering beamline for studying dynamics

An X-ray scattering beamline for studying dynamics

The crystal structure of Cs2V5O13

The electron density of beryllium derived from 0·12 Å γ-ray diffraction data

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