Absolute intensities: Outline of a recommended practice

The X-Ray Powder Data File (XRPDF) enables one to identify the compounds in a sample. More often than not, however, a semi-quantitative analysis is wanted. Visual inspection of the pattern may give a vague impression of the composition, but the errors of such a result are usually not within reasonable limits. Clearly a less subjective and more...

Über den Abbindeprozess des Sorelzements im Steinholz

The setting of magnesium oxychloride cement is investigated using data from a large-scale experimental study of various flooring composition. From the initial water content and the loss in weight before a stable weight is reached, a characteristic hydration number H is calculated for each one of eight test pieces corresponding to the eight...

Some considerations on cellulose fibril orientation in growing cell walls

An adjustable curved crystal monochromator for X-ray diffraction analysis

The logarithmic spiral form of Barrau d’s monochromator can be obtained to a good approximation by exerting unequal bending moments on the short edges of a rectangular crystal plate. In the first two paragraphs some aberration formulas are derived pertaining to the asymetrical Barraud -type monochromator. In § 4 the new way of mounting is...

Röntgendiffractie

De röntgendiffractie, die men kan omschrijven als het verstrooien van röntgenstralen aan materiedeeltjes, is een hulpmiddel, dat voor wetenschap en techniek van enorm belang is ondermeer voor quantitatief en qualitatief materiaalonderzoek. In het hieronder volgende wordt beschreven, wat er gebeurt als röntgenstralen verstrooid worden en welke...