{"title":"Radiation response of transition metals-doped lithium aluminate crystals","authors":"Y. Fujimoto, T. Yanagida, K. Kamada, J. Pejchal","doi":"10.1109/NSSMIC.2013.6829660","DOIUrl":null,"url":null,"abstract":"Basic radiation response properties of lithium aluminate LiAlO<sub>2</sub> crystals activated with transition metals like Ti, Mn and Cu were examined. When X-ray excited the crystals, intense emission peaks were observed at visible wavelength regions, they are ascribed to the Ti<sup>4+</sup> charge transfer (Ti-doped), Mn<sup>2+</sup> 3d<sup>5</sup>-3d<sup>5</sup> (Mn-doped) and Cu<sup>+</sup> 3d<sup>9</sup>4s-3d<sup>10</sup> (Cu-doped) transitions. The scintillation decay times were estimated to be about 1.8 μs (93 %) and 9.9 μs (7 %) for the Ti-doped crystal, 310 μs (96 %) and 2220 μs (4 %) for Mn-doped one, and 3.6 μs (52 %) and 19.6 μs (48 %) for Cu-doped one, respectively. In the <sup>252</sup>Cf neutron irradiated pulse height spectra, Ti- and Cu- doped crystals showed higher light yield in comparison to that of GS20 commercial scintillator.","PeriodicalId":246351,"journal":{"name":"2013 IEEE Nuclear Science Symposium and Medical Imaging Conference (2013 NSS/MIC)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2013-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2013 IEEE Nuclear Science Symposium and Medical Imaging Conference (2013 NSS/MIC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/NSSMIC.2013.6829660","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
Basic radiation response properties of lithium aluminate LiAlO2 crystals activated with transition metals like Ti, Mn and Cu were examined. When X-ray excited the crystals, intense emission peaks were observed at visible wavelength regions, they are ascribed to the Ti4+ charge transfer (Ti-doped), Mn2+ 3d5-3d5 (Mn-doped) and Cu+ 3d94s-3d10 (Cu-doped) transitions. The scintillation decay times were estimated to be about 1.8 μs (93 %) and 9.9 μs (7 %) for the Ti-doped crystal, 310 μs (96 %) and 2220 μs (4 %) for Mn-doped one, and 3.6 μs (52 %) and 19.6 μs (48 %) for Cu-doped one, respectively. In the 252Cf neutron irradiated pulse height spectra, Ti- and Cu- doped crystals showed higher light yield in comparison to that of GS20 commercial scintillator.
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