Abstract
Ce-doped LaBr3/AEBr2 (AE = Mg, Ca, Sr, Ba) eutectics were grown using the Bridgman–Stockbarger (BS) method in quartz ampoules. The eutectics (AE = Mg and Ca) showed optical transparency like optical fiber bundles. A grown Ce-doped LaBr3/MgBr2 eutectic shows a 355 nm emission ascribed to Ce3+ 4f-5d transition under X-ray excitation. The smaller the ionic size of AE, the higher the light yield of the sample was. The light yield of Ce:LaBr3/MgBr2 was 34,300 photon/MeV, which is higher than Ce:LYSO standard. Scintillation decay time under 662 keV gamma-ray excitation was 18.8 ns.
Highlights
Scintillators coupled with photodetectors are widely used in radiation imaging applications such as medical imaging, security, high-energy physics, astrophysics, oil well logging, etc
Submicron-diameter phase-separated scintillator fibers (PSSFs) have been reported and they have both characteristics of optical fiber and a radiation-to-light conversion
= Sr.Ca, Sr, Ba) eutectics were grown via the BS method in a quartz ampoule
Summary
Scintillators coupled with photodetectors are widely used in radiation imaging applications such as medical imaging, security, high-energy physics, astrophysics, oil well logging, etc. Submicron-diameter phase-separated scintillator fibers (PSSFs) have been reported and they have both characteristics of optical fiber and a radiation-to-light conversion. In PSSFs, emitted scintillation is confined and transported along the eutectic structure by a total reflection the emitted scintillation is confined and transported along the eutectic structure by a total reflection mode, so that light diffusion can be reduced and high-resolution imaging can be achieved. The Ce:LaBr3 scintillator has attracted attention due to its high light yield over 74,000 photon/MeV and fast decay time of around 20 ns, with enough density of 5.1 g/cm for of over 74,000 photon/MeV and fast decay time of around 20 ns, with enough density of 5.1 g/cm low energy X-ray detection even though it is hygroscopic [18,19]. Crystal growth was performed using the fibers at the eutectic point of LaBr3 /AEBr2 (See Figure 1).
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
