| Title | Structural and scintillation properties of cerium-doped Ba 1-xlaxCl2+x ceramics |
| Publication Type | Journal Article |
| Year of Publication | 2008 |
| Authors | Edgar, A., Bartle M., Raymond S.G., Williams G.V.M., and Varoy C. |
| Journal | IEEE Transactions on Nuclear Science |
| Volume | 55 |
| Issue | 3 |
| Pagination | 1160 - 1163 |
| Date Published | 2008 |
| ISSN | 00189499 (ISSN) |
| Keywords | Barium, Cerium, Cerium compounds, Scintillation properties, Structural properties |
| Abstract | A series of cerium-doped compounds with the composition Ba 1-xLaxCl2+x and 0 < × < 0.5 have been prepared in ceramic form. We find from the powder X-ray diffraction patterns that the compounds adopt the cubic fluorite structure for 0.05 < × < 0.34. Samples with × ∼ 0.2 are translucent. When doped with trivalent cerium, the materials show photoluminescence emission peaks at 350, 372 nm (for the Ba0.66La0.34Cl2.34 composition); the photoluminescence decay can be fitted with a single exponential with decay time 25 ns. The scintillation pulse height analysis shows a photopeak for 137Cs which can be used to compute a light yield of 4000 photons/MeV. The scintillation decay is non-exponential, with a rapid initial decay which can be represented approximately by a decay constant of ∼100 ns, but there is a substantial delayed scintillation which extends over several microseconds. © 2008 IEEE. |
| URL | http://www.scopus.com/inward/record.url?eid=2-s2.0-45849088112&partnerID=40&md5=e06da31e774ebde7d305ccb0ef85f333 |
| DOI | 10.1109/TNS.2008.924070 |
