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DIY Gamma Spectrometry

Gamma-ray spectroscopy is the quantitative study of the energy spectra of gamma-ray sources, in such as the nuclear industry, geochemical investigation, and astrophysics. Most radioactive sources produce gamma rays, which are of various energies and intensities. When these emissions are detected and analyzed with a spectroscopy system, a gamma-ray energy spectrum can be produced.

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Cosmic Ray Muons & Muon Lifetime

The aim of this project is to detect the muon decay events and to measure the muon mean lifetime. For this purpose we will use the scintillation detector described in the following post : Scintillation Detector for Cosmic Muons.

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Cosmic Rays and Coincidence Detector

Cosmic rays are energetic particles coming from outer space. The Earth and any other spatial body, as well as satellites and astronauts in orbit, are exposed to cosmic rays. The cosmic rays nature is very diverse (the kinetic energy of the particles of cosmic rays is distributed over fourteen orders …

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Fluorimetry of Edible Oils

Food oils (olive oil, seed oil) have interesting optical properties (absorption, fluorescence) due to the content of optically active compounds, such as chlorophyll, beta-carotene and others. These properties can be used to recognize and characterize the various types of oil.

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Planck Constant Measurement

The Planck constant (denoted h, also called Planck’s constant) is a physical constant that is the quantum of action, central in quantum mechanics. This constant determines that the fundamental physical quantities does not vary in a continuous way, but are quantized, that is they can only take on multiple values ​​of this constant .

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Atomic Spectroscopy

The emission spectrum of a chemical element or a chemical compound is the set of frequencies of the electromagnetic radiation emitted by the electrons of its atoms when they perform a transition from one state to a higher energy towards a lower energy . For each transition between states, the energy of …

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DIY Webcam Diffraction Grating Spectrometer

Abstract : In this post we propose the construction of a diffraction grating spectrometer based on webcam and software Theremino Spectrometer. The spectrometer is a fundamental tool that allows measurement of the spectrum of a light source, ie the properties of light as a function of its wavelength. The spectrometer …

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Quantum Dots : a True “Particle in a Box” System

A quantum dot (QD) is a crystal of semiconductor material whose diameter is on the order of several nanometers – a size which results in its free charge carriers experiencing “quantum confinement” in all three spatial dimensions. The electronic properties of quantum dots are intermediate between those of bulk semiconductors and of discrete molecules and closely related to …

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