Li+, Na+ and K+ co-doping effects on scintillation properties of Ce:Gd3Ga3Al2O12 single crystals

Masao Yoshino, Kei Kamada, Vladimir V. Kochurikhin, Mikhail Ivanov, Martin Nikl, Satoshi Okumura, Seiichi Yamamoto, Jung Yeol Yeom, Yasuhiro Shoji, Shunsuke Kurosawa, Yuui Yokota, Yuji Ohashi, Akira Yoshikawa

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


Ce0.5%: Ce:Gd3Ga3Al2O12(GGAG) single crystals co-doped with 500at.ppm Li+, Na+ and K+ were grown by using the micro-pulling down method. The smooth Ce4+ charge transfer absorption below 350 nm and decay time acceleration were observed in Li co-doped sample. Na+ and K+ co-doping did not show a large effect on the acceleration of decay time compared with Li co-doping. Ce0.5%:GGAG single crystals co-doped with 500 at.ppm Li+ were also grown by the Czochralski method. Optical, scintillation properties and timing performance were evaluated to investigate the effect of univalent alkali metal ions co-doping on Ce:GGAG scintillators. The scintillation decay curves were accelerated by Li co-doping: the decay time was significantly accelerated to 54.8 ns (47%) for the faster component and 158 ns (53%) for the slower component. The light output was 94% of the non co-doped Ce:GGAG standard. The coincidence time resolution was improved to 258 ps by Li co-doping.

Original languageEnglish
Pages (from-to)1-5
Number of pages5
JournalJournal of Crystal Growth
Publication statusPublished - 2018 Jun 1

Bibliographical note

Funding Information:
This work is partially supported by the Health Labour Sciences Research Grant, The Ministry of Health Labour and Welfare, and Bilateral AS CR-JSPS Joint Research Project. In addition, we would like to thank following persons for their support: Mr. Yoshihiro Nakamura in Institute of Multidisciplinary Research for Advanced Materials (IMRAM), and Mr. Hiroshi Uemura, Ms. Keiko Toguchi, Ms. Megumi Sasaki and Ms. Yuka Takeda in IMR, Tohoku University.

Publisher Copyright:
© 2018


  • A2. Czochralski method
  • A2. Single crystal growth
  • B1. Oxides
  • B2. Scintillator materials

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry


Dive into the research topics of 'Li+, Na+ and K+ co-doping effects on scintillation properties of Ce:Gd3Ga3Al2O12 single crystals'. Together they form a unique fingerprint.

Cite this