Radioluminescence properties under X-ray excitation of type III Ce3+- and Pr3+-doped KGd(PO3)4 single crystals
| Autor: | Magdalena Aguiló, Rosa Maria Solé, Irina Adell, Francesc Díaz, Maria Cinta Pujol |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Scintillation
Materials science Doping Biophysics Analytical chemistry 02 engineering and technology General Chemistry Radioluminescence Scintillator 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Biochemistry Atomic and Molecular Physics and Optics 0104 chemical sciences Atomic electron transition Excited state Irradiation 0210 nano-technology Excitation |
| Zdroj: | Journal of Luminescence. 225:117339 |
| ISSN: | 0022-2313 |
| Popis: | The research for new scintillator materials with improved properties is gaining growing interest due to their wide variety of applications, including medical diagnosis. Here, radioluminescence studies under synchrotron X-ray excitation of bulk single crystals of type III Ce:KGd(PO3)4 and Pr:KGd(PO3)4 (Ce:KGdP and Pr:KGdP) with high crystalline quality have been carried out. The X-ray excited radioluminescence spectra show emission bands corresponding to 5d1 → 4f electronic transitions of Ce3+ and of Pr3+ in type III KGdP, being of great interest for scintillation applications. In the case of Ce:KGdP crystals, the absence of the 6PJ → 8S7/2 transitions of Gd3+ (~312 nm) can be ascribed to an efficient energy transfer from Gd3+ to Ce3+. In undoped and Pr3+-doped KGdP crystals, a change in coloration in the irradiated regions was observed after prolonged X-ray irradiation, which could be related to the presence of color centers. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect