Scintillation Properties and Time-Resolved Spectroscopy of a Novel Scintillator Material:Ce3+- Activated Li3Lu(PO4)2 Crystals - Corrected Proof
- ORNL
The scintillation properties and time-resolved spectroscopy results for Li3Lu(PO4)2:Ce - a new Ce3+-activated crystalline scintillator have been determined. This material contains stoichiometric amounts of Li, and can be synthesized either with the use of 6Li-enriched or 6Li-depleted isotopes, for achieving thermal neutron sensitivity or X-ray/gamma-ray detection without neutron sensitivity, respectively. The scintillation of Li3Lu(PO4)2:Ce is based on the Ce3+-activator UV (336 and 360 nm) emission, and for a 2 wt. % activation level and gamma ray photon excitation, it exhibits a light yield of about 5300 photons/MeV and a decay time constant of 24.7 ns - with no longer component observed in the time range up to 2 ms. Host emissions, while present for some specific excitations in the region of the bandgap energy, does not appear to play a significant role in the material s scintillation, which is most probably accomplished by the consecutive capture and recombination of free band holes and electrons on the activator ions.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA)
- DOE Contract Number:
- DE-AC05-00OR22725
- OSTI ID:
- 983819
- Journal Information:
- IEEE Transactions on Nuclear Science, Vol. 56, Issue 6; ISSN 0018-9499
- Country of Publication:
- United States
- Language:
- English
Similar Records
Lithium glass scintillator neutron detector as an improved alternative to the standard 3 he proportional counter
Scintillation Properties of a Cs2LiLa(Br6)90%(Cl6)10%:Ce (CLLBC) Crystal