Space applications of GAGG:Ce scintillators: a study of afterglow emission by proton irradiation

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Authors	DILILLO Giuseppe ZAMPA Nicola CAMPANA Riccardo FUSCHINO Fabio PAULETTA Giovanni RASHEVSKAYA Irina AMBROSINO Filippo BARUZZO Marco CAUZ Diego CIRRINCIONE Daniela CITOSSI Marco CASA Giovanni Della DI RUZZA Benedetto EVANGELISTA Yuri GALGÓCZI Gábor LABANTI Claudio ŘÍPA Jakub TOMMASINO Francesco VERROI Enrico FIORE Fabrizio VACCHI Andrea
Year of publication	2022
Type	Article in Periodical
Magazine / Source	Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms
MU Faculty or unit	Faculty of Science
Citation
Web	https://www.sciencedirect.com/science/article/pii/S0168583X2100416X
Doi	http://dx.doi.org/10.1016/j.nimb.2021.12.006
Keywords	Scintillators; Scintillation afterglow; Proton irradiation; GAGG; Nanosatellites; Near-earth radiation environment
Description	We discuss the results of a proton irradiation campaign of a GAGG:Ce (Cerium-doped Gadolinium Aluminum Gallium Garnet) scintillation crystal, carried out in the framework of the HERMES-TP/SP (High Energy Rapid Modular Ensemble of Satellites — Technological and Scientific Pathfinder) mission. A scintillator sample was irradiated with 70 MeV protons, at levels equivalent to those expected in equatorial and sun-synchronous low-Earth orbits over orbital periods spanning 6 months to 10 years. The data we acquired are used to introduce an original model of GAGG:Ce afterglow emission. Results from this model are applied to the HERMES-TP/SP scenario, aiming at an upper-bound estimate of the detector performance degradation resulting from afterglow emission.
Related projects:	MUNI Award in Science and Humanities 3