MMC Array to Study X-ray Transitions in Muonic Atoms

• DOI: 10.48550/arxiv.2311.12014
• Publication Date: 2023-01-01
• Authors: Daniel Unger; A. Abeln; T. E. Cocolios; Ofir Eizenberg; C. Enss; A. Fleischmann; L. Gastaldo; César Godinho; Michael Heines; Daniel Hengstler; P. Indelicato; Ashish Jadhav; Daniel Kreuzberger; K. Kirch; A. Knecht; Jorge Machado; Ben Ohayon; N. Paul; Randolf Pohl; Katharina von Sch...; Stergiani Marina ...; Frederik Waûters
• Keywords: Science & Technology; Physics - Instrumentation and Detectors; Metallic magnetic calorimeter; Absolute nuclear charge radii; Physics; FOS: Physical sciences; Instrumentation and Detectors (physics.ins-det); Metallic magnetic calorimeter; X-ray spectroscopy; Muonic atoms; Exotic atoms; Absolute nuclear charge radii; QUARTET; 7. Clean energy; 01 natural sciences; Physics, Applied; PHYSICS; Physics, Condensed Matter; Exotic atoms; QUARTET; Physical Sciences; 0103 physical sciences; X-ray spectroscopy; Muonic atoms

The QUARTET collaboration aims to significantly improve the precision of absolute nuclear charge radii light nuclei from Li Ne by using an array metallic magnetic calorimeters perform high-precision X-ray spectroscopy low-lying states in muonic atoms. A proof-of-principle measurement with lithium, beryllium and boron is planned for fall 2023 at Paul Scherrer Institute. We discuss performance achieved maXs-30 detector module be used. To place close target chamber where muon beam will impact material under study, we have developed a new dilution refrigerator sidearm. further expected efficiency given transparency windows quantum detector. rate combined high resolving power detection suggest that able study de-excitation atoms unprecedented level, increasing relative energy resolution up factor 20 compared conventional techniques.