Proceedings of MATSUS Spring 2025 Conference (MATSUSSpring25)
DOI: https://doi.org/10.29363/nanoge.matsusspring.2025.484
Publication date: 16th December 2024
A multilayer luminescent design concept is presented to develop energy sensitive radiation-beam monitors on the basis of colorimetric analysis. Each luminescent layer within the stack consists of rare-earth-doped transparent oxide of optical quality and a characteristic luminescent emission under excitation with electron or ion radiation. For a given type of particle beam (electron, protons, α particles, etc.), the penetration depth and the energy loss at a particular buried layer within the multilayer stack vary with the initial energy of the beam. The intensity of the luminescent response of each layer depends on the energy deposited by the radiation beam within the layer, so characteristic colour emission will be achieved if different phosphors are included in the layers of the luminescent stack. Phosphor doping, emission efficiency, layer thickness, and multilayer design are key parameters relevant to achieving a broad colorimetric response. Case examples are designed and fabricated to illustrate the capabilities of these new type of detector to evaluate the kinetic energy of either e- beams of a few keV or α particles of a few MeVs.
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