Addressing current challenges in OSL dosimetry using MgB&lt;sub&gt;4&lt;/sub&gt;O&lt;sub&gt;7&lt;/sub&gt;:Ce,Li: state of the art, limitations and avenues of research

Bossin, Lily; Plokhikh, Igor; Christensen, Jeppe Brage; Gawryluk, Dariusz Jakub; Kitagawa, Yuuki; Leblans, Paul; Tanabe, Setsuhisa; Vandenbroucke, Dirk; Yukihara, Eduardo Gardenali

doi:10.3390/ma16083051

Addressing current challenges in OSL dosimetry using MgB₄O₇:Ce,Li: state of the art, limitations and avenues of research

Bossin L, Plokhikh I, Christensen JB, Gawryluk DJ, Kitagawa Y, Leblans P, Tanabe S, Vandenbroucke D & Yukihara EG

Citation

Bossin, L., Plokhikh, I., Christensen, J. B., Gawryluk, D. J., Kitagawa, Y., Leblans, P., … Yukihara, E. G. (2023). Addressing current challenges in OSL dosimetry using MgB₄O₇:Ce,Li: state of the art, limitations and avenues of research. Materials, 16(8), 3051 (17 pp.). https://doi.org/10.3390/ma16083051

Persistent URL https://www.dora.lib4ri.ch/psi/islandora/object/psi:52389

The objective of this work is to review and assess the potential of MgB₄O₇:Ce,Li to fill in the gaps where the need for a new material for optically stimulated luminescence (OSL) dosimetry has been identified. We offer a critical assessment of the operational properties of MgB₄O₇:Ce,Li for OSL dosimetry, as reviewed in the literature and complemented by measurements of thermoluminescence spectroscopy, sensitivity, thermal stability, lifetime of the luminescence emission, dose response at high doses (>1000 Gy), fading and bleachability. Overall, compared with Al₂O₃:C, for example, MgB₄O₇:Ce,Li shows a comparable OSL signal intensity following exposure to ionizing radiation, a higher saturation limit (ca 7000 Gy) and a shorter luminescence lifetime (31.5 ns). MgB₄O₇:Ce,Li is, however, not yet an optimum material for OSL dosimetry, as it exhibits anomalous fading and shallow traps. Further optimization is therefore needed, and possible avenues of investigation encompass gaining a better understanding of the roles of the synthesis route and dopants and of the nature of defects.