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English Posts

Light as a Particle

In this post we propose to highlight the quantum nature of light by means of the photon counting technique. For the light detection has been used a photomultiplier tube, which is able to detect a single photon. A dimmed LED driven by an ultra-short pulse has been used as light source.

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XRF Mineral Analysis

We propose, in this post, the use of XRF spectrometer, previously described, for the analysis of some minerals in order to identify the contained elements.

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XRF Elemental Analysis

We propose, in this post, the use of XRF spectrometer, described previously, for the elemental analysis of some significant samples of elements.

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DIY X-Ray Fluorescence Spectrometry

X-ray fluorescence (XRF) is the emission of characteristic “secondary” (or fluorescent) X-rays from a material that has been excited by bombarding with high-energy X-rays or gamma rays. The phenomenon is widely used for elemental analysis and chemical analysis, particularly in the investigation of metals, glass, ceramics and building materials, and for research in geochemistry, forensic science and archaeology.

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Silicon Photomultiplier (SiPM)

The silicon photomultiplier (SiPM) is a radiation detector with extremely high sensitivity, high efficiency, and very low time jitter. It is based on reversed biased p/n diodes, it can directly detect light from near ultra violet to near infrared, and it is employed in all those applications where low light/radiation …

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Beta Radioactivity

A beta particle, sometimes called beta ray, denoted by the lower-case Greek letter beta (β), is a high-energy, high-speed electron or positron emitted in the radioactive decay of an atomic nucleus, such as a potassium-40 nucleus, in the process of beta decay. Two forms of beta decay, β− and β+, respectively produce electrons and positrons. Beta particles are a type of ionizing radiation. …

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