Scintillation of tantalate compounds
| Autor: | Gregory Bizarri, David M. Smiadak, M. Weber, Edith Bourret, Ramesh B. Borade, Yunfeng Ma, Stephen E. Derenzo |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Luminescence
Materials science Astrophysics::High Energy Astrophysical Phenomena Biophysics Tantalum Analytical chemistry chemistry.chemical_element Tantalate 02 engineering and technology Scintillator 01 natural sciences Biochemistry Luminosity 0103 physical sciences Magnesium Decay time 010302 applied physics Scintillation Gamma ray General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Atomic and Molecular Physics and Optics Zinc chemistry Excited state 0210 nano-technology |
| Zdroj: | Journal of Luminescence. 202:332-338 |
| ISSN: | 0022-2313 |
| DOI: | 10.1016/j.jlumin.2018.05.044 |
| Popis: | A screening of 63 metal-tantalate-oxides was conducted in search of heavy scintillator materials operating at ambient temperature. While tantalates are known to have slow scintillation decay times, the high atomic number of tantalum (73) provides good stopping power for gamma rays. Screened samples were synthesized by solid state reactions. Scintillation properties of these materials were evaluated by X-ray diffraction, X-ray excited luminescence and pulsed X-ray luminescence. Of the 63 synthesized tantalates examined only 12 had luminosity values greater than 1000 ph/MeV at room temperature. From these, ScTaO4, YTa3O9, and Zn3Ta2O8 have greater than 40% of their emission in the first μs. The brightest and fastest compound of those tested was Zn3Ta2O8 with an estimated luminosity of 26,000 ph/MeV and a main decay time of 600 ns from its crystalline powder. Further attention is given to Zn3Ta2O8 and Mg4Ta2O9 scintillation properties, demonstrating their potential for scintillation applications. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect