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MMC Array to Study X-Ray Transitions in Muonic Atoms
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Orientador(es)
Resumo(s)
The QUARTET collaboration aims to significantly improve the precision of the absolute nuclear charge radii of light nuclei from Li to Ne by using an array of metallic magnetic calorimeters to perform high-precision X-ray spectroscopy of low-lying states in muonic atoms. A proof-of-principle measurement with lithium, beryllium and boron is planned for fall 2023 at the Paul Scherrer Institute. We discuss the performance achieved with the maXs-30 detector module to be used. To place the detector close to the target chamber where the muon beam will impact the material under study, we have developed a new dilution refrigerator sidearm. We further discuss the expected efficiency given the transparency of the X-ray windows and the quantum efficiency of the detector. The expected muonic X-ray rate combined with the high resolving power and detection efficiency of the detector suggest that QUARTET will be able to study the de-excitation of light muonic atoms at an unprecedented level, increasing the relative energy resolution by up to a factor of 20 compared to conventional detector techniques.
Descrição
Funding Information: Open Access funding enabled and organized by Projekt DEAL. The group at the Kirchhoff Institute for Physics is supported by the Field of Focus II Initiative at Heidelberg University funded by the \"Bundesministerium f\u00FCr Bildung und Forschung\" (BMBF) and by the \"Wissenschaftsministerium Baden-W\u00FCrttemberg\" in the framework of the \"Exzellenzstrategie von Bund und L\u00E4ndern.\" DU acknowledges the support of the Research Training Group HighRR (GRK 2058) funded by the Deutsche Forschungsgemeinschaft (DFG). TEC and MH acknowledge the support of the FWO-Vlaanderen (Belgium) and of KU Leuven (C14/22/104). Publisher Copyright: © The Author(s) 2024.
Palavras-chave
Absolute nuclear charge radii Exotic atoms Metallic magnetic calorimeter Muonic atoms QUARTET X-ray spectroscopy Atomic and Molecular Physics, and Optics General Materials Science Condensed Matter Physics