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X-Ray Fiber Diffraction

Introduction (From Wikipedia) Fiber diffraction is a subarea of scattering, an area in which molecular structure is determined from scattering data (usually of X-rays, electrons or neutrons). In fiber diffraction the scattering pattern does not change, as the sample is rotated about a unique axis (the fiber axis). Such uniaxial symmetry is …

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XRD on Powders

Introduction In x-ray diffraction work we normally distinguish between single crystal and polycrystalline or powder applications. The single crystal sample is a perfect (all unit cells aligned in a perfect extended pattern) crystal with a cross section of about 0.3 mm. The single crystal diffractometer and associated computer package is …

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Si-PIN Photodiode with Micod CSA-SA

Introduction In this post we describe the applications of PIN diodes as radiation detectors. This application is well known and we have already covered this field in other posts (X Ray Spectroscopy with PIN Photodiode , Si-PIN Photodiode β Detector), now we would like to test a novel apparatus built by Micod , …

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PSoC based Pulse Counter

In this post we describe the realization of a pulse counter based on PSoC. The PSoC microchip is suitable for use in a variety of applications, as it integrates both digital components and analog components. The “Pulse Counter” we have made, in addition to three buttons, a 4×20 LCD display …

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Alpha Spectroscopy with Thin Film Adsorption Technicque

Preparation of samples for alpha spectroscopy has always been a critical part of the analysis process. The problem rises from the fact that the interaction of the alpha particles with the massive parts of the sample under analysis reduces the energy with which the particles escape from the sample and …

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DIY Geiger Tube

A bit of History … Our friend Antonio Zanardo has built a geiger tube in his workshop. It has not been an easy task but he is a stubborn guy and he told us all the steps he followed! The idea of ​​building a Geiger tube came to me during …

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XRD Analysis of Mica Samples

The structure of Mica The mica group of sheet silicate (phyllosilicate) minerals includes several closely related materials having nearly perfect basal cleavage. All are monoclinic, with a tendency towards pseudohexagonal crystals, and are similar in chemical composition. The nearly perfect cleavage, which is the most prominent characteristic of mica, is explained by the hexagonal sheet-like arrangement of its atoms. Chemically, micas can …

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Polycrystalline Materials & Textures

Most inorganic solids are polycrystalline, including all common metals, many ceramics, rocks and ice. The extent to which a solid is crystalline (crystallinity) has important effects on its physical properties. Polycrystalline materials are made of crystallites. A crystallite is a small or even microscopic crystal which forms, for example, during the cooling of many materials. The orientation …

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Digital Radiography DIY

In this post we propose to use the Webcam ParticleDetector as a digital sensor to perform simple educational and demonstrative X-rays. The use of a webcam as a particle and radiation detector has been described in these articles : DIY Webcam Particle Detector, Webcam Particle Detector Measurements. The webcam, appropriately modified and …

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XRD Analysis of some Metals

We propose in this Post the XRD analysis of some metals. Gold Gold is a chemical element with symbol Au (from Latin: aurum) and atomic number 79. In its purest form, it is a bright, slightly reddish yellow, dense, soft, malleable, and ductile metal. Chemically, gold is a transition metal. It is one of the least reactive chemical elements and is solid under standard conditions. …

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