Title:
SCINTILLATOR AND RADIATION DETECTOR
Document Type and Number:
WIPO Patent Application WO/2022/202500
Kind Code:
A1
Abstract:
A scintillator which has a composition represented by general formula (1), while containing at least La as a substitution element A and additionally containing an activator element B, wherein: the activator element B is composed of Ce; and the total molar content of the substitution element A in 1 mole of the scintillator is from 0.00001 mole to 0.05 mole. This scintillator has a perovskite crystal structure, while having a linear transmittance of 30% or more with respect to light that has a wavelength of 800 nm if this scintillator has a thickness of 1.9 mm. (1): QMxO3y
(In general formula (1), Q represents one or more elements that are selected from the group consisting of Ca, Sr and Ba; M represents Hf; Q and M may be respectively substituted by another element at a ratio of 20% by mole or less; and x and y respectively satisfy 0.5 ≤ x ≤ 1.5 and 0.7 ≤ y ≤ 1.5.)
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Inventors:
HAZU KOJI (JP)
YAMAHARA KEIJI (JP)
KUROSAWA SHUNSUKE (JP)
YOSHIKAWA AKIRA (JP)
YAMAHARA KEIJI (JP)
KUROSAWA SHUNSUKE (JP)
YOSHIKAWA AKIRA (JP)
Application Number:
PCT/JP2022/011677
Publication Date:
September 29, 2022
Filing Date:
March 15, 2022
Export Citation:
Assignee:
MITSUBISHI CHEM CORP (JP)
UNIV TOHOKU (JP)
UNIV TOHOKU (JP)
International Classes:
C09K11/00; C09K11/08; C09K11/78; G01T1/20; G01T1/202
Foreign References:
| US5698857A | 1997-12-16 | |||
| JP5674385B2 | 2015-02-25 | |||
| JP2016056378A | 2016-04-21 | |||
| JP2015151535A | 2015-08-24 | |||
| JP2014013216A | 2014-01-23 |
Other References:
DOBROWOLSKA ANNA; ZYCH EUGENIUSZ: "The mechanism of X-ray excited luminescence in BaHfO3doped with Eu3+, Y3+or Eu3+, La3+", JOURNAL OF LUMINESCENCE, ELSEVIER BV NORTH-HOLLAND, NL, vol. 192, 1 January 1900 (1900-01-01), NL , pages 397 - 403, XP085232439, ISSN: 0022-2313, DOI: 10.1016/j.jlumin.2017.06.048
EVA MIHOKOVA ; FEDERICO MORETTI ; NORBERTO CHIODINI ; ALESSANDRO LAURIA ; MAURO FASOLI ; ANNA VEDDA ; ANGELO NALE ; MARTIN NIKL ; : "Optical and Structural Properties of Pb and Ce Doped SrHfO3 Powders", IEEE TRANSACTIONS ON NUCLEAR SCIENCE, IEEE, USA, vol. 57, no. 3, 1 June 2010 (2010-06-01), USA, pages 1245 - 1250, XP011311681, ISSN: 0018-9499
DOBROWOLSKA ANNA, ZYCH EUGENIUSZ: "Forcing Eu 3+ into Different Positions in the BaHfO 3 Host and Its Spectroscopic Consequences", CHEMISTRY OF MATERIALS, AMERICAN CHEMICAL SOCIETY, US, vol. 22, no. 16, 24 August 2010 (2010-08-24), US , pages 4652 - 4659, XP055973826, ISSN: 0897-4756, DOI: 10.1021/cm100828v
ZHU DANYANG, QIAN KANG, CHEN XIAOPU, HU ZEWANG, LIU XIN, LI XIAOYING, PAN YUBAI, MIHÓKOVÁ EVA, NIKL MARTIN, LI JIANG: "Fine-grained Ce,Y:SrHfO 3 Scintillation Ceramics Fabricated by Hot Isostatic Pressing", JOURNAL OF INORGANIC MATERIALS - WUJI CAILIAO XUEBAO, KEXUE CHUBANSHE - SCIENCE PRESS, CN, vol. 36, no. 10, 1 January 2021 (2021-01-01), CN , pages 1118, XP055973827, ISSN: 1000-324X, DOI: 10.15541/jim20210059
E. V. VAN LOEFW. M. HIGGINSJ. GLODOC. BRECHERA. LEMPICKIV. VENKATARAMANIW. W. MOSESS. E. DERENZOK. S. SHAH: "Scintillation Properties of SrHf03: Ce3+ and BaHfO3: Ce3+ Ceramics", IEEE TRANSACTIONS ON NUCLEAR SCIENCE, vol. 54, 2007, pages 741 - 743
A. GREZERE. ZYCHL. LEPINSKI: "BaHfO3: Ce sintered ceramic scintillators", RADIATION MEASUREMENTS, vol. 45, 2010, pages 386 - 388
NATSUNA YAHABAMASANORI KOSHIMIZUYAN SUNTAKAYUKI YANAGIDAYUTAKA FUJIMOTORIE HARUKIFUMIHIKO NISHIKIDOSHUNJI KISHIMOTOKEISUKE ASAI: "X-ray detection capability of a Cs2ZnCl4 single-crystal scintillator", APPLIED PHYSICS EXPRESS, vol. 7, 2014, pages 062602
E.V.D. VAN LOEF, P. DORENBOSC.W.E. VAN EIJKK.W. KR.AMERH.U. G.UDEL, NUCLEAR INSTRUMENTS AND METHODS IN PHYSICS RESEARCH A, vol. 486, 2002, pages 254 - 258
"Isotopic compositions and standard atomic masses from Atomic weights of the elements. Review 2000 (IUPAC Technical Report", PURE APPL. CHEM, vol. 75, no. 6, 2003, pages 683 - 300
ATOMIC WEIGHTS REVISED, 2005
H. ROTHFUSSV. PANINM. CASEY, IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE(2013 NSS/MIC, 2013
EVA MIHOKOVA ; FEDERICO MORETTI ; NORBERTO CHIODINI ; ALESSANDRO LAURIA ; MAURO FASOLI ; ANNA VEDDA ; ANGELO NALE ; MARTIN NIKL ; : "Optical and Structural Properties of Pb and Ce Doped SrHfO3 Powders", IEEE TRANSACTIONS ON NUCLEAR SCIENCE, IEEE, USA, vol. 57, no. 3, 1 June 2010 (2010-06-01), USA, pages 1245 - 1250, XP011311681, ISSN: 0018-9499
DOBROWOLSKA ANNA, ZYCH EUGENIUSZ: "Forcing Eu 3+ into Different Positions in the BaHfO 3 Host and Its Spectroscopic Consequences", CHEMISTRY OF MATERIALS, AMERICAN CHEMICAL SOCIETY, US, vol. 22, no. 16, 24 August 2010 (2010-08-24), US , pages 4652 - 4659, XP055973826, ISSN: 0897-4756, DOI: 10.1021/cm100828v
ZHU DANYANG, QIAN KANG, CHEN XIAOPU, HU ZEWANG, LIU XIN, LI XIAOYING, PAN YUBAI, MIHÓKOVÁ EVA, NIKL MARTIN, LI JIANG: "Fine-grained Ce,Y:SrHfO 3 Scintillation Ceramics Fabricated by Hot Isostatic Pressing", JOURNAL OF INORGANIC MATERIALS - WUJI CAILIAO XUEBAO, KEXUE CHUBANSHE - SCIENCE PRESS, CN, vol. 36, no. 10, 1 January 2021 (2021-01-01), CN , pages 1118, XP055973827, ISSN: 1000-324X, DOI: 10.15541/jim20210059
E. V. VAN LOEFW. M. HIGGINSJ. GLODOC. BRECHERA. LEMPICKIV. VENKATARAMANIW. W. MOSESS. E. DERENZOK. S. SHAH: "Scintillation Properties of SrHf03: Ce3+ and BaHfO3: Ce3+ Ceramics", IEEE TRANSACTIONS ON NUCLEAR SCIENCE, vol. 54, 2007, pages 741 - 743
A. GREZERE. ZYCHL. LEPINSKI: "BaHfO3: Ce sintered ceramic scintillators", RADIATION MEASUREMENTS, vol. 45, 2010, pages 386 - 388
NATSUNA YAHABAMASANORI KOSHIMIZUYAN SUNTAKAYUKI YANAGIDAYUTAKA FUJIMOTORIE HARUKIFUMIHIKO NISHIKIDOSHUNJI KISHIMOTOKEISUKE ASAI: "X-ray detection capability of a Cs2ZnCl4 single-crystal scintillator", APPLIED PHYSICS EXPRESS, vol. 7, 2014, pages 062602
E.V.D. VAN LOEF, P. DORENBOSC.W.E. VAN EIJKK.W. KR.AMERH.U. G.UDEL, NUCLEAR INSTRUMENTS AND METHODS IN PHYSICS RESEARCH A, vol. 486, 2002, pages 254 - 258
"Isotopic compositions and standard atomic masses from Atomic weights of the elements. Review 2000 (IUPAC Technical Report", PURE APPL. CHEM, vol. 75, no. 6, 2003, pages 683 - 300
ATOMIC WEIGHTS REVISED, 2005
H. ROTHFUSSV. PANINM. CASEY, IEEE NUCLEAR SCIENCE SYMPOSIUM AND MEDICAL IMAGING CONFERENCE(2013 NSS/MIC, 2013
Attorney, Agent or Firm:
IP FIRM SHUWA (JP)
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