Publication details
Space applications of GAGG:Ce scintillators: a study of afterglow emission by proton irradiation
| Authors | |
|---|---|
| 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 | |
| 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. |
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