Abstract
In this study, Ce: 6 LiBr/LaBr 3 eutectic with a high Li concentration was developed as a novel thermal neutron scintillator . Ce served as an activator for the LaBr 3 phase, and Ce: 6 LiBr/LaBr 3 eutectics were grown via the vertical Bridgman method in quartz ampoules (inner diameter = 4 mm). In the eutectic, the 6 LiBr phase worked as the neutron capture phase by the 6 Li (n, a) 3 H reaction, and Ce:LaBr 3 worked as the scintillator phase. The Ce: 6 LiBr/LaBr 3 eutectic exhibited a lamellar eutectic structure and optical transparency, as well as 350 and 380 nm emission due to Ce 3 + 5d-4f transition. The light yield under neutrons excitation was estimated to be 74000 photons/neutron. The scintillation decay time was 18.7 ns. • Optically semitransparent Ce-doped 6 LiBr/LaBr 3 eutectic was grown. • The vertical Bridgman–Stockbarger (VB) method enables unidirectional solidification to grow the directionally solidified eutectic (DSE). • Ce 3 + emission peaks at 350 and 380 nm were observed in the LaBr 3 phase. • Scintillation decay time under 252 Cf neutron excitation was 18.7 ns. • The light yield under 252 Cf neutron excitation was around 74000 photon/neutron.
Accepted Version (
Free)
Published Version
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 call