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Description
  • The objective of this project consists in performing an extended pioneering study on RE-free scintillators as well as powder phosphors to develop new material conceptions in this field. Such novel material concepts will have great potential to provide commercially competitive materials for several strategically important and large volume applications. Based on recent trends in R&D of scintillator materials, the society needs, coming applications, and their estimated evolution in near future, and our extended experience as well, we concentrate on three material families: 1) Development of novel RE-FREE nonstochiometric SrHfO3, powders and ceramics which can compete with currently used the RE-BASED Gd2O2S:Pr(Tb) or (Gd,Y)2O3:Tb ceramics in computed tomography imaging and other imaging techniques. 2) a) Development of novel doping schemes, based on OTHER-THEN-RE, namely 5s2 ions, for ultraefficient SrI2-based single crystal scintillator to be used in homeland security applications. Currently used SrI2 is heavily doped by 5% of Eu2+ which is one of most expensive and most critical RE elements; b) Tailoring SrI2 host to diminish highly unwanted re-absorption effects which currently limit the performance of SrI2:Eu scintillator 3) New RE-FREE doping schemes based on 5s2-ions, to be used in LiCaAlF6, single crystals. Such crystals will be used for thermal neutron imaging (homeland security, portals, nuclear industry) instead of currently used RE-doped glass or other materials suffering from hygroscopicity, opacity or coming global scarcity. (en)
  • Připravit a charakterizovat následující materiálové systémy: 1) nestechiometrické SrHfO3 prášky a z nich dále optické keramiky inovativní metodou „spark plasma sintering“; 2) aniontově přečištěný monokrystal SrI2 dopovaný 5s2 ionty (In+,Sn2+,Sb3+) , dále uzpůsobený admixováním iontů Ca a Br do základní struktury matrice. 3) monokrystal LiCaAlF6 dopovaný 5s2 ionty In+ a Sn2+ Popsat procesy přenosu a záchytu energie ve vyvinutých materiálech a roli defektů ve scintilačním mechanismu. Nalézt souvislosti mezi použitou technologií a vznikem specifických defektů. Porovnat charakteristiky vyvinutých materiálů s komerčními standardy. Navrhnout a realizovat technologické modifikace pro optimalizaci materiálů.
Title
  • Innovative material concepts of rare earth-free scintillators (en)
  • Inovativní materiálové koncepce scintilátorů bez prvků vzácných zemin
skos:notation
  • LH14266
http://linked.open...avai/cep/aktivita
http://linked.open...kovaStatniPodpora
http://linked.open...ep/celkoveNaklady
http://linked.open...datumDodatniDoRIV
http://linked.open...i/cep/druhSouteze
http://linked.open...ep/duvernostUdaju
http://linked.open.../cep/fazeProjektu
http://linked.open...ai/cep/hlavniObor
http://linked.open...vai/cep/kategorie
http://linked.open.../cep/klicovaSlova
  • Scintillator; luminescence; single crystal; ceramics (en)
http://linked.open...ep/partnetrHlavni
http://linked.open...inujicichPrijemcu
http://linked.open...cep/pocetPrijemcu
http://linked.open...ocetSpoluPrijemcu
http://linked.open.../pocetVysledkuRIV
http://linked.open...enychVysledkuVRIV
http://linked.open...lneniVMinulemRoce
http://linked.open.../prideleniPodpory
http://linked.open...iciPoslednihoRoku
http://linked.open...atUdajeProjZameru
http://linked.open.../vavai/cep/soutez
http://linked.open...usZobrazovaneFaze
http://linked.open...ai/cep/typPojektu
http://linked.open...ep/ukonceniReseni
http://linked.open.../cep/vedlejsiObor
http://linked.open...ep/zahajeniReseni
http://linked.open...tniCyklusProjektu
http://linked.open.../cep/klicoveSlovo
  • Scintillator
  • luminescence
  • single crystal
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