| Autor: |
R G Denning, J.R.G. Thorne, J. M. Rey, Hans Bill |
| Jazyk: |
angličtina |
| Rok vydání: |
2005 |
| Předmět: |
|
| Zdroj: |
Journal of Physics. Condensed Matter, Vol. 17, No 12 (2005) pp. 1861-1868 |
| ISSN: |
0953-8984 |
| Popis: |
An optical investigation of the properties of europium (II) ions introduced in Ba2Mg3F10 single crystals is presented. The spectra and time-dependence of both the inter-configurational (f–d) and the intra-configurational (f–f) transitions are described. The emission spectrum consists of two emitting Eu2+ centres, each showing one broad f–d band and one 6P7/2 quartet. The thermal equilibrium between the f–f and f–d emitting states is investigated and found to take place on a microsecond timescale for one of the two Eu2+ centres. The spectroscopic results combined with numerical modelling of the influence of the host crystal on the 6P7/2 energy scheme allow the assignment of each f–f and f–d emission to its corresponding Eu2+ centre. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
|
