| Autor: |
Birowosuto, M. D., Dorenbos, P., de Haas, J. T. M., van Eijk, C. W. E., Krämer, K. W., Güdel, H. U. |
| Předmět: |
|
| Zdroj: |
Journal of Applied Physics; 3/15/2007, Vol. 101 Issue 6, p066107-1, 3p, 2 Charts, 4 Graphs |
| Abstrakt: |
Scintillation and luminescence characteristics of Rb2LiYBr6 doped with 0.1%, 0.5%, 1%, and 5% Ce3+ are presented. Under optical and x-ray excitation, Ce3+ doublet emission is observed at 385 and 420 nm. Rb2LiYBr6:0.5% Ce3+ shows very high thermal neutron scintillation light output of 83 000 photons/neutron. An excellent neutron peak resolution of 3.6% (full width at half maximum over peak position) is observed for the 4.8 MeV neutron-reaction products energy response in Rb2LiYBr6:0.1% Ce3+. This peak shows up at 3.6 MeV γ-equivalent energy and therefore it gives an α/β ratio of 0.74. The combination of a large fraction of neutron absorption in natural 6Li (62%), a sharp neutron response peak, high light yield, and large α/β ratio makes Rb2LiYBr6:Ce3+ an efficient scintillator for thermal neutron detection. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
|
