Energy and coincidence-time resolution of the LaBr3:Ce-MPPC™ detectors under magnetic fields
Time-differential perturbed angular correlation (TDPAC) spectroscopy is a nuclear solid-state technique that requires high energy and coincidence-time resolutions from scintillation crystals and photodetectors. Traditionally, photomultiplier tubes (PMTs) have been coupled to LaBr 3 :Ce crystals; however, they have been replaced by Multi Pixel Photon Counters (MPPCs) for TDPAC experiments conducted under external magnetic fields. In this report, we show that, for TDPAC spectroscopy, the performance of the LaBr 3 :Ce-MPPC detector remains stable under magnetic fields up to 8.5 T (in 1 T steps), as evidenced by the unchanged energy and coincidence-time resolutions of the 511 keV peaks from positron–electron (e + -e - ) annihilation in a sealed 22 Na calibration source.
Authors
- Arnaldo Alves Miranda Filho
- A. Mokhles Gerami (ORCID: https://orcid.org/0000-0001-9707-9808)
- Juliana Schell (ORCID: https://orcid.org/0000-0003-2186-5321)
- Thien Thanh Dang (ORCID: https://orcid.org/0000-0001-9633-5654)
- Nicole Pereira de Lima (ORCID: https://orcid.org/0000-0003-1423-1638)
- Ian Chang Jie Yap (ORCID: https://orcid.org/0000-0001-5554-1777)
- Bruno Santos Corrêa
- Doru Constantin Lupascu
- Alexandre Pinho dos Santos Souza
- Björn Dörschel
- Magnus Hegelund Stegenborg
Institutions
- Instituto de Pesquisas Energéticas e Nucleares (BR)
- Institute for Research in Fundamental Sciences (IR)
- Universidade Federal do Pará (BR)
- University of Duisburg-Essen (DE)
- European Organization for Nuclear Research (CH)
- National Nuclear Energy Commission (BR)
- Aalborg University (DK)
Publication Details
- Journal
- Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment
- Published
- 2026-03-20
- DOI
- https://doi.org/10.1016/j.nima.2026.171480
- Primary Topic
- Radiation Detection and Scintillator Technologies
- Type
- article
- Field-Weighted Citation Impact
- 0.00