• DocumentCode
    1139299
  • Title

    Influence of Si-Codoping on YAG:Ce Scintillation Characteristics

  • Author

    Baccaro, S. ; Cecilia, A. ; Mihokova, E. ; Nikl, M. ; Nejezchleb, K. ; Blazek, K.

  • Author_Institution
    Adv. Techonol. Phys./ION, ENEA, Rome, Italy
  • Volume
    52
  • Issue
    4
  • fYear
    2005
  • Firstpage
    1105
  • Lastpage
    1108
  • Abstract
    A set of undoped, \\hbox {Ce$^{3+}$} -doped and \\hbox {Si$^{4+}$} -codoped \\hbox {Y }_{3}\\hbox {Al}_{5 }\\hbox {O }_{12} [yttrium aluminum garnet (YAG)] crystals were grown by the Czochralski method and submitted to \\gamma irradiation in the dose range 1–236 Gy at RT, to investigate the possibility to reinforce crystal radiation hardness by \\hbox {Si$^{4+}$} doping. The absorption coefficients induced by the irradiation were calculated and analyzed. Crystals also underwent light yield (LY) and scintillation decay measurements using the ^241\\hbox {Am} and ^22\\hbox {Na} radioactive sources in 1 \\mu\\hbox {s} time gate. The induced absorption at 550 nm (at the \\hbox {Ce$^{3+}$} luminescence peak) decreases with Ce concentration and further decrease is obtained in the \\hbox {Si$^{4+}$} -codoped samples. LY values are independent on the \\hbox {Ce$^{3+}$} concentration within 0.12% – 0.3% and on the moderate \\hbox {Si$^{4+}$} codoping as well.
  • Keywords
    aluminium compounds; cerium; crystal growth from melt; doping profiles; gamma-ray effects; scintillation; silicon; solid scintillation detectors; yttrium compounds; 1 to 236 Gy; 550 nm; 22Na radioactive sources; 241Am radioactive sources; Ce3+ concentration; Ce3+-doped crystals; Czochralski method; Si-codoping; Si4+-codoped crystals; Y3Al5O12; Y3Al5O12:Ce3+Si4+; YAG:Ce scintillation characteristics; absorption coefficients; crystal radiation hardness; gamma-irradiation; light yield measurements; scintillation decay measurements; undoped YAG crystals; yttrium aluminum garnet crystals; Aluminum; Doping; Electromagnetic wave absorption; Garnets; Ionizing radiation; Luminescence; Photonic crystals; Physics; Solid scintillation detectors; Yttrium; Doping; radiation hardness; yttrium aluminum garnet (YAG);
  • fLanguage
    English
  • Journal_Title
    Nuclear Science, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    0018-9499
  • Type

    jour

  • DOI
    10.1109/TNS.2005.852664
  • Filename
    1495812
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=1139299