Luminescence and Scintillation Properties of YAl3(BO3)4 Single Crystal for Thermal Neutron Detection
A single crystal of YAl3(BO3)4 was grown using the top-seeded solution growth method. The vacuum ultraviolet (VUV) excitation spectrum, monitored at the emission wavelength of 312 and 372 nm, showed a narrow excitation band at around 162 nm, which is located near the absorption edge of the YAl3(BO3)4 host. Upon VUV excitation at 162 nm, the characteristic self-trapped exciton (STE) emission bands were observed at 312 and 372 nm. The X-ray excited scintillation spectrum shows a broad emission band peaking at 310 nm with a weak shoulder band at around 375 nm, which is consistent with photoluminescence, and can thus be assigned to the STE emission. The scintillation light yield under irradiation at a 252Cf-thermal neutron reached 2700 photons/thermal neutron.
Authors
- Masanori Koshimizu (ORCID: https://orcid.org/0000-0002-0905-2144)
- Yutaka Fujimoto (ORCID: https://orcid.org/0000-0002-1202-8065)
- Akio Miyamoto (ORCID: https://orcid.org/0000-0003-0401-7304)
- Kenichi Watanabe (ORCID: https://orcid.org/0000-0002-6063-8044)
- Keisuke Asai (ORCID: https://orcid.org/0000-0002-0868-6735)
- Hiroki Kawamoto (ORCID: https://orcid.org/0000-0003-4659-8581)
Institutions
- Shizuoka University (JP)
- Kyushu University (JP)
- Tohoku University (JP)
- Hokuto Hospital (JP)
Publication Details
- Journal
- Crystals
- Published
- 2025-04-12
- DOI
- https://doi.org/10.3390/cryst15040357
- Primary Topic
- Radiation Detection and Scintillator Technologies
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Institute of Advanced Industrial Science and Technology
- Ministry of Education, Culture, Sports, Science and Technology
- Iketani Science and Technology Foundation
- Amano Institute of Technology
- Research Foundation for the Electrotechnology of Chubu
- Japan Society for the Promotion of Science