An Introduction to X-Ray Crystallography by M. Woolfson

By M. Woolfson

Show description

Read or Download An Introduction to X-Ray Crystallography PDF

Similar crystallography books

Macromolecular Crystallography MIE

A reference describing interfacial phenomena in chemistry, biology, physics and drugs, of liquid interfaces. contains extra the seven hundred equations, 430 drawings and images, 2,800 references, and contributions from greater than 60 overseas authors. entire assurance of floor chemistry and its functions in quite a few fields.

Photonic Crystals Molding the Flow of Light

Because it was once first released in 1995, Photonic Crystals has remained the definitive textual content for either undergraduates and researchers on photonic band-gap fabrics and their use in controlling the propagation of sunshine. This newly elevated and revised variation covers the most recent advancements within the box, supplying the main updated, concise, and finished ebook to be had on those novel fabrics and their functions.

Fundamentals of Crystallography (International Union of Crystallography Book Series, No. 2)

In recent times, crystallographic suggestions have came upon software in a variety of topics, and those functions in flip have bring about intriguing advancements within the box of crystallography itself. This new textbook deals an advent to those advancements, and for the 1st time offers, in one quantity, a accomplished and available assessment of recent crystallography.

Extra resources for An Introduction to X-Ray Crystallography

Sample text

It is useful first of all to consider diffraction from a single row of n atoms, each atom separated from its neighbour by a vector distance a. 33), it was found that the scattering amplitude from a centrosymmetric arrangement of scatterers is real if the centre of symmetry is used as origin. The analysis of the present case is simplified if we assume that n is odd and if we take the centre atom, which is at the centre of symmetry, as the coordinate origin. =/. 1) where/a is the atomic scattering factor.

4(a). The amplitude of the disturbance at P due to scattering at Ox is represented by the vector AB and that due to scattering at O2 by the vector BC. Both these vectors have the same magnitude, rt(29,D), and the angle between them equals the difference of phase of the radiation scattered from O1 and O2, 27irs. The resultant AC has magnitude rj2(29,D) and differs in phase from the radiation scattered at Ox by the angle 0. However in this description we have given a special role to one of the scatterers, Ol9 with respect to which as origin all phases are quoted.

26 in the form given in the International Tables. The twofold axis is at the origin of the cell and it will reproduce one of the structural units, represented by an open circle, in the way shown. The right-hand diagram shows the symmetry elements; the twofold axis manifests itself in two dimensions as a centre of symmetry. It will be seen that three other centres of symmetry are generated - at the points (x, y) = (\, 0), (0,^) and ({,\). The four centres of symmetry are all different in that the structural arrangement is different as seen from each of them.

Download PDF sample

Rated 4.20 of 5 – based on 33 votes