• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to project page

2019 Fiscal Year Annual Research Report

Study of the complementary relationship of scintillators and dosimeter materials

Research Project

Project/Area Number 17H01375
Research InstitutionNara Institute of Science and Technology

Principal Investigator

柳田 健之  奈良先端科学技術大学院大学, 先端科学技術研究科, 教授 (20517669)

Project Period (FY) 2017-04-01 – 2021-03-31
Keywordsシンチレータ / ドシメータ / 熱蛍光 / 輝尽蛍光 / RPL
Outline of Annual Research Achievements

本研究の目的は、蛍光体を用いた放射線計測を行うという目的が同じでありながら、異なる分野として発展してきたシンチレータ、および蛍光体型ドシメータの実験的な統合モデルを描く事である。このような目的を達成する為、材料系としてはバルク単結晶、透明/不透明セラミックス、ガラスを選択し、何らかのホストに0.1~10%程度の発光中心元素を添加した物質を合成し、そのシンチレーションおよびドシメータ特性を評価した。
昨年度までは様々な材料系に、希土類元素もしくは遷移金属元素を添加した蛍光体の放射線誘起蛍光特性を調査したが、今年度はさらにns2イオンを添加した物質の特性を調査した。例えばTl+を添加したCsBrやCsCl単結晶や透明セラミックスの特性を調査したところ、昨年度までと同様にシンチレーションとドシメータ用蓄積型蛍光の反相関性を確認した。同様の傾向は、Sn2+やIn+など、他のns2イオンにおいても確認された。さらに副次的な成果として、様々な物質の放射線検出器特性を調べていく過程で、CsLiB6O10 (CLBO) 単結晶がガンマ線照射下で、64000 ph/MeV の高い発光量を有する事を発見した。ホウ素含有物質では発光量の高いモノが発見されてこなかったため、関連分野においては新たな知見が得られた事となる。これらの成果に基づき、本年度も客観的な研究への評価として、応用物理学会論文奨励賞、7件の指導学生の応用物理学会放射線分科会ポスター賞、2件の応用物理学会 Poster Award、2件の次世代先端光科学研究会若手奨励賞等を受けた。

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

本研究を進めるうえでの作業仮説は、二次電子の、発光中心と捕獲中心への分岐比がシンチレータもしくはドシメータとしての性能に決定的に重要となる事である。昨年度までは希土類発光中心を有するセラミックスと単結晶という秩序構造を有する物質系、短距離秩序構造を有しないアモルファス (ガラス) においても同様の傾向 (シンチレーションとドシメータ用蓄積蛍光) の反相関性を確認し、仮説が秩序構造によらず成り立つ事を検証した。今年度は同様の研究を進めつつ、協力研究者らとの共同研究において、二次電子分岐における熱失活とシンチレーションもしくは蓄積蛍光に振り分けられるエネルギーが反相関する事も確認し、放射線吸収後のエネルギー分岐は、単純なエネルギー保存則を仮定した場合のシンチレーション、蓄積蛍光、熱失活の三通りに振り分けられることを検証した。

Strategy for Future Research Activity

より多様な物質、すなわち様々なナノ・ミクロスケールの秩序・ランダム構造におけるシンチレーションおよびドシメータ特性を観測し、どういった場合に反相関性が成立し、どのような場合は成立しない (すなわち多くの吸収した放射線エネルギーが熱失活する) かを明らかにする。合わせて共同研究などを通じて、逐次過程におけるダイナミクスの評価を行い、無限時間積分した状況 (エネルギー保存に基づく本研究の骨子となる仮定) と時間微分した状況の整合性に関して検討を行いたい。

  • Research Products

    (46 results)

All 2020 2019 Other

All Int'l Joint Research (1 results) Journal Article (39 results) (of which Peer Reviewed: 38 results) Presentation (5 results) (of which Int'l Joint Research: 4 results,  Invited: 3 results) Remarks (1 results)

  • [Int'l Joint Research] サスカチュワン大学(カナダ)

    • Country Name
      CANADA
    • Counterpart Institution
      サスカチュワン大学
  • [Journal Article] Thermoluminescence properties of Dy3+-doped CaO-Al2O3-B2O3 glasses for neutron detection2020

    • Author(s)
      Kawamura Ichiro、Kawamoto Hiroki、Fujimoto Yutaka、Koshimizu Masanori、Okada Go、Koba Yusuke、Ogawara Ryo、Suda Mitsuru、Yanagida Takayuki、Asai Keisuke
    • Journal Title

      Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms

      Volume: 468 Pages: 18~22

    • DOI

      10.1016/j.nimb.2020.02.015

    • Peer Reviewed
  • [Journal Article] Optical, scintillation, and dosimetric properties of dy-doped MgAl2O4 transparent ceramics2020

    • Author(s)
      Kato Takumi、Nakauchi Daisuke、Kawaguchi Noriaki、Yanagida Takayuki
    • Journal Title

      Optik

      Volume: 207 Pages: 164433~164433

    • DOI

      10.1016/j.ijleo.2020.164433

    • Peer Reviewed
  • [Journal Article] Undoped CaSO4 showing highly enhanced radio-photoluminescence properties2020

    • Author(s)
      Okada Go、Koguchi Yasuhiro、Yanagida Takayuki、Nanto Hidehito
    • Journal Title

      Materials Today Communications

      Volume: 24 Pages: 101013~101013

    • DOI

      10.1016/j.mtcomm.2020.101013

    • Peer Reviewed
  • [Journal Article] Comparative study of CsBr:Tl transparent ceramic and single crystal for radiation detector applications2020

    • Author(s)
      Kimura Hiromi、Kato Takumi、Nakauchi Daisuke、Okada Go、Kawaguchi Noriaki、Yanagida Takayuki
    • Journal Title

      Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

      Volume: 954 Pages: 161226~161226

    • DOI

      10.1016/j.nima.2018.09.061

    • Peer Reviewed
  • [Journal Article] X-ray induced luminescence properties of Ce-doped Ca3Sc2Si3O12 single crystal2020

    • Author(s)
      Kato Takumi、Usui Yuki、Okada Go、Kawaguchi Noriaki、Yanagida Takayuki
    • Journal Title

      Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

      Volume: 954 Pages: 161301~161301

    • DOI

      10.1016/j.nima.2018.09.136

  • [Journal Article] Development of scintillating 2D quantum confinement materials-(C6H5C2H4NH3)2Pb1-xSrxBr42020

    • Author(s)
      Akatsuka Masaki、Kawano Naoki、Kato Takumi、Nakauchi Daisuke、Okada Go、Kawaguchi Noriaki、Yanagida Takayuki
    • Journal Title

      Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

      Volume: 954 Pages: 161372~161372

    • DOI

      10.1016/j.nima.2018.10.050

    • Peer Reviewed
  • [Journal Article] Development of liquid scintillators based on mixed-organic solvents containing 6Li for neutron detection2020

    • Author(s)
      Arai Sae、Koshimizu Masanori、Fujimoto Yutaka、Yanagida Takayuki、Asai Keisuke
    • Journal Title

      Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

      Volume: 954 Pages: 161632~161632

    • DOI

      10.1016/j.nima.2018.11.091

    • Peer Reviewed
  • [Journal Article] Temperature dependence of scintillation responses in rare-earth-ions-doped LiCaAlF6 single crystals2020

    • Author(s)
      Kawaguchi Noriaki、Okada Go、Fukuda Kentaro、Yanagida Takayuki
    • Journal Title

      Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

      Volume: 954 Pages: 161518~161518

    • DOI

      10.1016/j.nima.2018.10.196

    • Peer Reviewed
  • [Journal Article] Basic study on a LiF-Eu:CaF2 mixed powder neutron scintillator2020

    • Author(s)
      Watanabe Kenichi、Mitsuboshi Natsumi、Ishikawa Akihisa、Yamazaki Atsushi、Yoshihashi Sachiko、Uritani Akira、Kawaguchi Noriaki、Yanagida Takayuki、Fukuda Kentaro
    • Journal Title

      Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

      Volume: 954 Pages: 161244~161244

    • DOI

      10.1016/j.nima.2018.09.079

    • Peer Reviewed
  • [Journal Article] Auger-free luminescence characteristics of Cs(Ca1-xMgx)Cl32020

    • Author(s)
      Takahashi Keisuke、Koshimizu Masanori、Fujimoto Yutaka、Yanagida Takayuki、Asai Keisuke
    • Journal Title

      Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment

      Volume: 954 Pages: 161842~161842

    • DOI

      10.1016/j.nima.2019.01.068

    • Peer Reviewed
  • [Journal Article] Characterizations of Pr:Ca2Al2SiO7 single crystal scintillator for α-ray detection2020

    • Author(s)
      Ogawa Taiki、Nakauchi Daisuke、Koshimizu Masanori、Kawaguchi Noriaki、Yanagida Takayuki
    • Journal Title

      Optical Materials

      Volume: 100 Pages: 109565~109565

    • DOI

      10.1016/j.optmat.2019.109565

    • Peer Reviewed
  • [Journal Article] Scintillation and dosimetric properties of Dy-doped CaF2 translucent ceramic and single crystal2020

    • Author(s)
      KAWANO Naoki、NAKAUCHI Daisuke、NAKAMURA Fumiya、YANAGIDA Takayuki
    • Journal Title

      Journal of the Ceramic Society of Japan

      Volume: 128 Pages: 57~61

    • DOI

      10.2109/jcersj2.19147

    • Peer Reviewed
  • [Journal Article] Evaluation of dosimetric properties of Tb-doped MgF2 transparent ceramics2020

    • Author(s)
      Matsuo Tatsuya、Kato Takumi、Kimura Hiromi、Nakamura Fumiya、Nakauchi Daisuke、Kawaguchi Noriaki、Yanagida Takayuki
    • Journal Title

      Optik

      Volume: 203 Pages: 163965~163965

    • DOI

      10.1016/j.ijleo.2019.163965

    • Peer Reviewed
  • [Journal Article] Scintillation and TSL properties of Nd-doped TeO2-Al2O3-WO3 glasses2020

    • Author(s)
      Kawano Naoki、Kimura Hiromi、Nakauchi Daisuke、Shinozaki Kenji、Yanagida Takayuki
    • Journal Title

      Solid State Sciences

      Volume: 100 Pages: 106111~106111

    • DOI

      10.1016/j.solidstatesciences.2019.106111

    • Peer Reviewed
  • [Journal Article] Optically-stimulated luminescence properties of Eu-doped Cs(Cl, Br) translucent ceramics2020

    • Author(s)
      Kimura Hiromi、Kato Takumi、Nakauchi Daisuke、Kawaguchi Noriaki、Yanagida Takayuki
    • Journal Title

      Optical Materials

      Volume: 100 Pages: 109660~109660

    • DOI

      10.1016/j.optmat.2020.109660

    • Peer Reviewed
  • [Journal Article] Scintillation properties of organic-inorganic perovskite-type compounds with fluorophenethylamine2020

    • Author(s)
      Horimoto Atsushi、Kawano Naoki、Nakauchi Daisuke、Kimura Hiromi、Akatsuka Masaki、Yanagida Takayuki
    • Journal Title

      Optical Materials

      Volume: 101 Pages: 109686~109686

    • DOI

      10.1016/j.optmat.2020.109686

    • Peer Reviewed
  • [Journal Article] Scintillation and photoluminescence properties of (Tl1-xAx)MgCl3 (where A = alkali metal)2020

    • Author(s)
      Arai Miki、Fujimoto Yutaka、Koshimizu Masanori、Yanagida Takayuki、Asai Keisuke
    • Journal Title

      Journal of Alloys and Compounds

      Volume: 823 Pages: 153871~153871

    • DOI

      10.1016/j.jallcom.2020.153871

    • Peer Reviewed
  • [Journal Article] Radio-photoluminescence properties of samarium-doped alkaline earth sulfates2020

    • Author(s)
      Okada Go、Hirasawa Kazuki、Kusano Eiji、Yanagida Takayuki、Nanto Hidehito
    • Journal Title

      Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms

      Volume: 466 Pages: 56~60

    • DOI

      10.1016/j.nimb.2020.01.020

    • Peer Reviewed
  • [Journal Article] Photosynergetic amplification of radiation input: from efficient UV induced cycloreversion to sensitive X-ray detection2020

    • Author(s)
      Asato Ryosuke、Martin Colin J.、Calupitan Jan Patrick、Mizutsu Ryo、Nakashima Takuya、Okada Go、Kawaguchi Noriaki、Yanagida Takayuki、Kawai Tsuyoshi
    • Journal Title

      Chemical Science

      Volume: 11 Pages: 2504~2510

    • DOI

      10.1039/C9SC05380H

    • Peer Reviewed
  • [Journal Article] Luminescence characteristics of Cs2BaCl42020

    • Author(s)
      Takahashi Keisuke、Arai Miki、Koshimizu Masanori、Fujimoto Yutaka、Yanagida Takayuki、Asai Keisuke
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59 Pages: 032003~032003

    • DOI

      10.35848/1347-4065/ab762b

    • Peer Reviewed
  • [Journal Article] TSL and OSL properties of Eu-doped LiMgAlF62020

    • Author(s)
      Yanagida Takayuki、Kato Takumi、Takebuchi Yuma、Nakauchi Daisuke、Kawaguchi Noriaki
    • Journal Title

      Radiation Measurements

      Volume: 132 Pages: 106250~106250

    • DOI

      10.1016/j.radmeas.2020.106250

    • Peer Reviewed
  • [Journal Article] Photoluminescence and scintillation properties of undoped and Tl-doped Cs2BaBr4 crystals2020

    • Author(s)
      Takahashi Kentaro、Kimura Hiromi、Nakauchi Daisuke、Kato Takumi、Kawaguchi Noriaki、Yanagida Takayuki
    • Journal Title

      Radiation Measurements

      Volume: 132 Pages: 106260~106260

    • DOI

      10.1016/j.radmeas.2020.106260

    • Peer Reviewed
  • [Journal Article] Radio-photoluminescence properties of LiCaAlF6:Sm2020

    • Author(s)
      Okada Go、Kawaguchi Noriaki、Kasap Safa、Nanto Hidehito、Yanagida Takayuki
    • Journal Title

      Radiation Measurements

      Volume: 132 Pages: 106251~106251

    • DOI

      10.1016/j.radmeas.2020.106251

    • Peer Reviewed
  • [Journal Article] Dosimetric properties of non-doped LiF/CaF2 eutectic2020

    • Author(s)
      Kawaguchi Noriaki、Kimura Hiromi、Takebuchi Yuma、Nakauchi Daisuke、Kato Takumi、Yanagida Takayuki
    • Journal Title

      Radiation Measurements

      Volume: 132 Pages: 106254~106254

    • DOI

      10.1016/j.radmeas.2020.106254

    • Peer Reviewed
  • [Journal Article] Radiation induced change in the optical properties of NaCl:Yb crystal2020

    • Author(s)
      Fujimoto Yutaka、Okada Go、Sekine Dai、Yanagida Takayuki、Koshimizu Masanori、Kawamoto Hiroki、Asai Keisuke
    • Journal Title

      Radiation Measurements

      Volume: 133 Pages: 106274~106274

    • DOI

      10.1016/j.radmeas.2020.106274

    • Peer Reviewed
  • [Journal Article] Scintillation and thermally-stimulated luminescence properties of Tm-doped CaHfO3 crystals2020

    • Author(s)
      Fukushima Hiroyuki、Nakauchi Daisuke、Kato Takumi、Kawaguchi Noriaki、Yanagida Takayuki
    • Journal Title

      Radiation Measurements

      Volume: 133 Pages: 106280~106280

    • DOI

      10.1016/j.radmeas.2020.106280

    • Peer Reviewed
  • [Journal Article] Photoluminescence and scintillation properties of (C6H5C2H4NH3)2Pb1-xMnxBr42019

    • Author(s)
      Kawano Naoki、Nakauchi Daisuke、Kimura Hiromi、Akatsuka Masaki、Takahashi Kosuke、Kagaya Fumito、Yanagida Takayuki
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 58 Pages: 082004~082004

    • DOI

      10.7567/1347-4065/ab2e7c

    • Peer Reviewed
  • [Journal Article] Neutron-induced thermoluminescence properties of Tb3+-doped CaO-Al2O3-B2O3 glasses2019

    • Author(s)
      KAWAMURA Ichiro、KAWAMOTO Hiroki、FUJIMOTO Yutaka、KOSHIMIZU Masanori、OKADA Go、KOBA Yusuke、OGAWARA Ryo、YANAGIDA Takayuki、ASAI Keisuke
    • Journal Title

      Journal of the Ceramic Society of Japan

      Volume: 127 Pages: 663~668

    • DOI

      10.2109/jcersj2.19071

    • Peer Reviewed
  • [Journal Article] Optical and scintillation properties of alkaline earth doped Ga2O3 single crystals prepared by the floating zone method2019

    • Author(s)
      Yanagida Takayuki、Kawaguchi Noriaki
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59 Pages: SCCB20~SCCB20

    • DOI

      10.7567/1347-4065/ab488f

    • Peer Reviewed
  • [Journal Article] Optical and scintillation properties of Pr-doped Y2Si2O7 single crystal2019

    • Author(s)
      Kantuptim Prom、Akatsuka Masaki、Kawaguchi Noriaki、Yanagida Takayuki
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59 Pages: SCCB17~SCCB17

    • DOI

      10.7567/1347-4065/ab48a2

    • Peer Reviewed
  • [Journal Article] Scintillation properties of xCe:30Rb2O-30BaO-10Al2O3-30P2O5 glasses2019

    • Author(s)
      Shiratori Daiki、Kawaguchi Noriaki、Yanagida Takayuki
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59 Pages: SCCB16~SCCB16

    • DOI

      10.7567/1347-4065/ab48c2

    • Peer Reviewed
  • [Journal Article] Scintillation and dosimetric properties of Sn-doped ZnO-P2O5-SiO2 glasses2019

    • Author(s)
      Kawaguchi Noriaki、Yanagida Takayuki
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59 Pages: SCCB21~SCCB21

    • DOI

      10.7567/1347-4065/ab488b

    • Peer Reviewed
  • [Journal Article] Photoluminescence and scintillation of TlBr crystals at low temperatures2019

    • Author(s)
      Koshimizu Masanori、Hitomi Keitaro、Nogami Mitsuhiro、Yanagida Takayuki、Fujimoto Yutaka、Asai Keisuke
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59 Pages: SCCB19~SCCB19

    • DOI

      10.7567/1347-4065/ab4895

    • Peer Reviewed
  • [Journal Article] Luminescence and scintillation properties of TlMg(Cl1-xBrx)3 crystals2019

    • Author(s)
      Arai Miki、Fujimoto Yutaka、Koshimizu Masanori、Kimura Hiromi、Yanagida Takayuki、Asai Keisuke
    • Journal Title

      Materials Research Bulletin

      Volume: 120 Pages: 110589~110589

    • DOI

      10.1016/j.materresbull.2019.110589

    • Peer Reviewed
  • [Journal Article] Synthesis and scintillation properties of Ce-doped CaZrO3 single crystals2019

    • Author(s)
      Fukushima Hiroyuki、Nakauchi Daisuke、Koshimizu Masanori、Kawaguchi Noriaki、Yanagida Takayuki
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59 Pages: SCCB15~SCCB15

    • DOI

      10.7567/1347-4065/ab4a86

    • Peer Reviewed
  • [Journal Article] Luminescence and scintillation properties of (C6H5(CH2)2NH3)2(Ba,Pb)Br4 with self-organized bi-dimensional quantum-well structures2019

    • Author(s)
      Nakauchi Daisuke、Kawano Naoki、Kawaguchi Noriaki、Yanagida Takayuki
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59 Pages: SCCB04~SCCB04

    • DOI

      10.7567/1347-4065/ab515d

    • Peer Reviewed
  • [Journal Article] Photoluminescence and scintillation properties of Ce-doped Ca(Gd,Y)Al3O7 single crystals2019

    • Author(s)
      Igashira Kenta、Nakauchi Daisuke、Fujimoto Yutaka、Kato Takumi、Kawaguchi Noriaki、Yanagida Takayuki
    • Journal Title

      Optical Materials

      Volume: 98 Pages: 109497~109497

    • DOI

      10.1016/j.optmat.2019.109497

    • Peer Reviewed
  • [Journal Article] Photoluminescence and scintillation properties of Yb2+-doped SrCl2 crystals2019

    • Author(s)
      SEKINE Dai、FUJIMOTO Yutaka、KOSHIMIZU Masanori、NAKAUCHI Daisuke、YANAGIDA Takayuki、ASAI Keisuke
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 59 Pages: 012005~012005

    • DOI

      10.7567/1347-4065/ab4e4c

    • Peer Reviewed
  • [Journal Article] Scintillation detector properties of CsLiB6O10 (CLBO) crystal2019

    • Author(s)
      Yanagida Takayuki、Sakairi Mitsuyoshi、Kato Takumi、Nakauchi Daisuke、Kawaguchi Noriaki
    • Journal Title

      Applied Physics Express

      Volume: 13 Pages: 016001~016001

    • DOI

      10.7567/1882-0786/ab5ffa

    • Peer Reviewed
  • [Presentation] Development of crystalline scintillators for radiation detector applications2020

    • Author(s)
      T. Yanagida, N. Kawaguchi
    • Organizer
      44th ICACC
    • Int'l Joint Research / Invited
  • [Presentation] Development of transparent ceramic scintillators2019

    • Author(s)
      T. Yanagida, N. Kawaguchi
    • Organizer
      GFMAT2
    • Int'l Joint Research / Invited
  • [Presentation] Inverse proportional relationship of scintillators and dosimeter materials based on energy conservation law2019

    • Author(s)
      T. Yanagida, N. Kawaguchi
    • Organizer
      Pacrim 2019
    • Int'l Joint Research / Invited
  • [Presentation] VUV spectroscopic and Scintillation Properties of Undoped Gd3(AlxGa1-x)5O12 (x = 1, 2, 2.5, 3, 4) Crystals2019

    • Author(s)
      T. Yanagida, M. Koshimizu, N. Kawaguchi
    • Organizer
      20th International Conference on Dynamical Processes in Excited States of Solids
    • Int'l Joint Research
  • [Presentation] Eu添加LiMgAlF6 の輝尽・熱蛍光特性評価2019

    • Author(s)
      柳田健之, 加藤匠, 河口範明
    • Organizer
      第80回応用物理学会秋季学術講演会
  • [Remarks] 研究室ホームページ

    • URL

      https://mswebs.naist.jp/LABs/yanagida/index.html

URL: 

Published: 2021-01-27  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi