Recent advances in radiophotoluminescence materials for luminescence dosimetry

Abstract

Radiophotoluminescence (RPL) is a phenomenon in which a luminescence centre is formed in a medium upon interaction with ionizing radiation. The RPL is observed by a conventional photoluminescence (PL) technique, and the PL intensity is proportional to the dose. With the latter feature, the RPL has found successful applications in personnel and environmental dosimetry. However, the conventional materials considered for radiation measurements may be limited to Ag-doped phosphate glass, LiF, and Al2O3:C,Mg. The recent research works, however, have found a number of additional RPL materials for luminescence dosimetry. The aim of the present paper is to review the series of newly reported RPL materials and potential applications in dosimetry.

Characterization of Radiophotoluminescence Dosimeters Under X-Ray Irradiation at High Doses

“…The overall response of the dosimeter, that leads to dose determination, depends on the concentration of those centres. These dosimeters are well-known for having stable centres at room temperature, with a fading effect lower than 5% per year, and low dose rate dependence [9][10][11].…”

“…At CERN, the RPL dosimeters are typically exposed to mixed radiation fields, and can absorb doses up to several MGy over service time [11,15], these levels exceeding their typical use [8][9][10]. Therefore, a custom readout system has been developed at CERN to extend the use of RPL dosimeters for doses up to the MGy range [11,16].…”

“…In these conditions, the available data are limited in comparison to more standard gamma radiation, traditionally used for calibration. Dependence on irradiation conditions such as temperature, dose rate, radiation energy spectrum and other irradiation parameters possibly relevant for their application need to be assessed as well [9].…”

Optical and scintillation properties of Lumilass-G and -R glasses

“…Most ionizing radiation detectors are solid-state detectors, and they are mainly divided into two groups such as semiconductor detectors (Si, 1) Ge, 2) CdTe, 3) and TlBr 4) ) and luminescence-based detectors. Luminescence-based detectors are also classified into two types, including scintillation detectors 5) and dosimeters with storage phosphors by optically stimulated luminescence (OSL), 6) thermally stimulated luminescence (TSL), 7) and radiophotoluminescence (RPL) 8) phenomena. Among them, scintillation detectors consist of scintillators and photodetectors, and they are used in many application fields, for instance, medical imaging, 9) security, 10) environmental monitoring, 11) optogenetics, 12) well-logging, 13) astrophysics, 14) and high energy physics.…”

Concentration dependence on optical stimulated luminescence properties of Ce: Y2SiO5 single crystals

“…Many researchers still have developed new storage phosphors since no storage phosphors that meet all requirements have been discovered. [9][10][11][12][13][14][15][16] In this research, Ce:Y 2 SiO 5 (YSO) was focused. YSO is a famous host material for long-lasting phosphor, lasers, phosphor for radiation measurement, coherent time-domain optical memory because of its high-temperature strength, high visible light transparency, high chemical stability, low thermal expansion, and high conductivity.…”