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Material Solutions Center, Tohoku University(MaSC)

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  • Development of Novel Scintillation Crystals for Next Generation
Projects

Projects

Development of Novel Scintillation Crystals for Next Generation

Name

Akira Yoshikawa
Professor
Institute for Materials Research

Outline of Research

In this project, we are searching for the materials that can be used in new scintillator crystals, developing the technology for mass producing them, and creating devices that use them. These crystals will be used in next-generation medical devices and equipment for taking environmental measurements. By combining high-speed material searches using the micro-pulling-down method and mass production using the Cz method, we aim to quickly implement new high-performance scintillators in society.

Achievement

【Conference Presentation(2019)】

    Invited Lecture, 6 tota

  1. Yoshikawa, Y. Yokota, K. Kamada et al., “Development of bulk crystal growth technology for novel functional crystals and their social implementation”, 19th International Conference on Crystal Growth and Epitaxy, Colorado, USA, 2019/07/28 – 08/02.
  2. Yoshikawa, “Bulk crystal growth of Ce doped Gd3(Ga, Al)5O12 single crystal from the melt without precious metal crucible and its scintillation properties”, 8th International Symposium on Optical Materials, Wroclaw, Poland, 2019/06/09 – 06/14.
  3. Y. Yokota, “Effects of chemical composition control for LiCaAlF6 and LiSrAlF6 neutron scintillator single crystals”, 8th International Symposium on Optical Materials, Wroclaw, Poland, 2019/06/09 – 06/14.
  4. K. Kamada, Y. Shoji, Y. Yokota, A. Yoshikawa et al., “Development of mass production technology of Ce:Gd3(Ga, Al)5O12 scintillator for radiation imaging applications”, 19th International Conference on Crystal Growth and Epitaxy, Colorado, USA, 2019/07/28 – 08/02

    5. International Conference, 79 total

  5. Y. Shoji, K. Kamada, Y. Yokota, A. Yoshikawa et al., “Growth and quality improvement of Ce-doped (Gd, La)2Si2O7 scintillator crystals”, 19th International Conference on Crystal Growth and Epitaxy, Colorado, USA, 2019/07/28 – 08/02
  6. K. Kamada, Y. Yokota, A. Yoshikawa et al., “Melt growth and luminescence properties Lu2O3 based high dense single crystals grown by indirect heating method using arc plasma”, 8th International Workshop on Photoluminescence in Rare Earth: Photonic Materials and Devices, Nice, France, 2019/09/04 – 09/06
  7. K. Kamada, Y. Shoji, Y. Yokota, A. Yoshikawa et al., “Growth and characterization of Ce:LaBr3 based eutectic systems”, The Sixth Directionally Solidified Eutectics Conference, Fisciano, Italy, 2019/09/10 – 09/13.
  8. Y. Yokota, K. Kamada, A. Yoshikawa et al., “Phase diagram of BaI2-REI3 (RE = Rare earth) and their composite scintillators”, 15th International Conference on Scintillating Materials and their Applications, Sendai, Japan, 2019/09/30 – 10/04.

    9. Conferences in Japan, 37 total

  9. Y. Yokota, K. Kamada, A. Yoshikawa, et al, “Fabrication of BaI2/REI3 (RE:rare earth) eutectic scintillators,” 48th National Conference on Crystal Growth, Osaka, 2019/10/30–11/01.
  10. K. Kamada, I. Shoko, Y. Yokota, A. Yoshikawa, et al., “Fabrication and scintillator characterization of Lu2O3 and HfO2 crystals using the submerged core hearting method,” 80th Autumn Meeting of the Japan Society of Applied Physics, Hokkaido, 2019/09/18–09/21.
【Academic papers】

    31 total

  1. K. Kamada, T. Iida, Y. Furuya, K. J. Kim, M. Yoshino, R. Murakami, Y. Shoji, V. V. Kochurikhin, A. Yamaji, S. Kurosawa, Y. Ohashi, Y. Yokota, A. Yoshikawa, “Crystal growth and scintillation properties of Eu-doped Ca(BrxI1-x)2 crystals”, Radiat. Meas., 127 (2019) 106139.
  2. K. Kamada, M. Nikl, T. Kotaki, H. Saito, F. Horikoshi, M. Miyazaki, K. J. Kim, R. Murakami, M. Yoshino, A. Yamaji, Y. Shoji, S. Kurosawa, S. Toyoda, H. Sato, Y. Yokota, Y. Ohashi, V. Kochurikhin, A. Yoshikawa, “Multiple shaped-crystal growth of oxide scintillators using Mo crucible and die by the edge defined film fed growth method”, J. Cryst. Growth, 535 (2020) 125510.
  3. S. Kodama, S. Kurosawa, M. Ohno, A. Yamaji, M. Yoshino, J. Pejchal, R. Kral, Y. Ohashi, K. Kamada, Y. Yokota, M. Nikl, A. Yoshikawa, “Development of a novel red-emitting cesium hafnium iodide scintillator”, Radiat. Meas., 124 (2019) 54 – 58.
  4. S. Kurosawa, T. Shishido, T. Sugawara, K. Yubuta, T. Horiai, V. Jary, A. Yamaji, M. Yoshino, Y. Yokota, Y. Shoji, K. Kamada, A. Yoshikawa, J. Pejchal, M. Nikl, “Scintillation properties of Y-admixed Gd2Si2O7 scintillator”, Radiat. Meas., 126 (2019) 106123.
  5. T. Iida, K. Kamada, M. Yoshino, K. J. Kim, K. Ichimura, A.Yoshikawa, “High-light-yield calcium iodide (CaI2) scintillator for astroparticle physics”, Nucl. Instrum. Methods Phys. Res. A, 958 (2019) 162629.
  6. V. Kochurikhin, K. Kamada, K. J. Kim, M. Ivanov, L. Gushchina, Y. Shoji, M. Yoshino, A. Yoshikawa, “Czochralski growth of 4-inch diameter Ce:Gd3Al2Ga3O12 single crystals for scintillator applications”, J. Cryst. Growth, 531 (2019) 125384.
  7. M. Yoshino, K. Bartosiewicz, T. Horiai, K. Kamada, A. Yamaji, Y. Shoji, Y. Yokota, S. Kurosawa, Y. Ohashi, H. Sato, S. Toyoda, R. Kucerkova, V. Jary, M. Nikl, A. Yoshikawa, “Relationship Between Li/Ce Concentration and the Luminescence Properties of Codoped Gd3(Ga, Al)5O12:Ce”, Phys. Status Solidi B Basic Solid State Phys., (2019) 1900504.
  8. K. Origuchi, Y. Yokota, R. Kral, M. Yoshino, A. Yamaji, S. Toyoda, H. Sato, Y. Ohashi, S. Kurosawa, K. Kamada, A. Yoshikawa, “Phase diagram of BaI2-LuI3 system and growth of BaI2/LuI3 eutectic scintillator”, J. Cryst. Growth, 536 (2020) 125573.
  9. M. Ueno, K.J. Kim, K. Kamada, V. Babin, M. Nikl, T. Nihei, M. Yoshino, A. Yamaji, S. Toyoda, H. Sato, Y. Yokota, S. Kurosawa, Y. Ohashi, V.V. Kochurikhin, A. Yoshikawa, “Bulk single crystal growth of W co-doped Ce:Gd3Ga3Al2O12 by Czochralski method”, J. Cryst. Growth, 539 (2020) 125513.
  10. S. Kodama, S. Kurosawa, M. Ohno, Y. Morishita, H. Usai, M. Hayashi, M. Sasano, T. Azuma, H. Tanaka, V. Kochurikhin, A. Yamaji, M. Yoshino, S. Toyoda, H. Sato, Y. OHASHI, K. Kamada, Y. Yokota, A. Yoshikawa, T. Torii, “Fiber-reading radiation monitoring system using an optical fiber and red-emitting scintillator for ultra-high dose condition”, Appl. Phys. Express, 13 (2020) 047002.

SDGs

  • 5
  • 9

Contact Information

TEL：+81-22-215-2214
E-mail address: yoshikawa＊imr.tohoku.ac.jp
Please use @ instead of ＊.
HP　URL: http://yoshikawa-lab.imr.tohoku.ac.jp/

Document

  • 次世代向けシンチレータ結晶の量産技術開発
  • 次世代向けシンチレータ結晶の量産技術開発
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