Luminescence and Excitation Spectra of U3+ doped RbY2Cl7 Single Crystals |
| M. Karbowiaka, K. Murdochb, J. Drożdżyńskia, N. Edelsteinb and S. Hubertc aFaculty of Chemistry, University of Wrocław, Joliot-Curie 14, 50-383 Wrocław, Poland bChemical Sciences Division, MS 70A - 1150, Lawrence Berkeley National Laboratory, Berkeley, USA cInstitute de Physique Nucléaire, Groupe de Radiochimie, B.P. No. 1, 91406 Orsay Cedex, France |
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| Uranium(3+) doped single crystals of RbY2Cl7 with a uranium concentration of 0.05% and 0.2% were grown by the Bridgman-Stockbarger method using RbU2Cl7 as the doping substance. Polished plates of ca. 5 mm in diameter were used for measurements of luminescence and excitation spectra. Since the U3+ ions occupy two somewhat different site symmetries, a splitting of all observed f-f bands was observed. The analysis of the spectra enabled definitively an assignment of 22 crystal field bands for both site symmetries as well as the total crystal field splitting of the ground level, equal to 473 cm-1 and 567 cm-1 for the first and second site symmetry, respectively. |
| DOI: 10.12693/APhysPolA.90.371 PACS numbers: 33.50.I3q, 33.55.Be, 71.70.Ej, 81.10.Fq |