JP5249032B2 - 高光収率高速シンチレーター - Google Patents
高光収率高速シンチレーター Download PDFInfo
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- JP5249032B2 JP5249032B2 JP2008530545A JP2008530545A JP5249032B2 JP 5249032 B2 JP5249032 B2 JP 5249032B2 JP 2008530545 A JP2008530545 A JP 2008530545A JP 2008530545 A JP2008530545 A JP 2008530545A JP 5249032 B2 JP5249032 B2 JP 5249032B2
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- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7766—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing two or more rare earth metals
- C09K11/7772—Halogenides
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
- C04B2235/3225—Yttrium oxide or oxide-forming salts thereof
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
- C04B2235/3227—Lanthanum oxide or oxide-forming salts thereof
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- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/02—Composition of constituents of the starting material or of secondary phases of the final product
- C04B2235/30—Constituents and secondary phases not being of a fibrous nature
- C04B2235/32—Metal oxides, mixed metal oxides, or oxide-forming salts thereof, e.g. carbonates, nitrates, (oxy)hydroxides, chlorides
- C04B2235/3224—Rare earth oxide or oxide forming salts thereof, e.g. scandium oxide
- C04B2235/3229—Cerium oxides or oxide-forming salts thereof
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- Life Sciences & Earth Sciences (AREA)
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- Manufacturing & Machinery (AREA)
- Luminescent Compositions (AREA)
- Measurement Of Radiation (AREA)
- Crystals, And After-Treatments Of Crystals (AREA)
Description
LnはLa、Nd、Pm、Sm、Eu、Gd、Yまたはこれら(La、Nd、Pm、Sm、Eu、Gd、Y)の少なくとも二つの混合物から選択され;
xは0.0005より大きく1より小さく;
xは0.005より大きいことが好ましく;
xは0.9未満(90モル%未満)が好ましく、および0.4未満が好ましく;
Xはハロゲン原子Cl、Br、Iまたはこれらの群(Cl、Br、I)の少なくとも二つのハロゲン原子の混合物から選択され;
yは0であってもよく、および0から1未満であり、および好ましくは0.9までであり、および好ましくは(1−x)/2未満であり;
(x+y)は1未満である。
LY=光収率
R=エネルギー分解能
τ=減衰時間
λem=放出光のメインピークの波長
5%Ceはこの一般化学式においてx=0.05を意味し、これはつまりPr0.95Ce0.05Br3である。
Ce3+ドープしたランタニドトリハロゲン化物シンチレーター(REX3:Ce3+、ここでRE=La、Gd、Lu、YおよびX=F、Cl、Br、I)が近年より良いシンチレーターの追求において研究された。LaCl3:Ce3+、LaBr:Ce3+およびLuI3:Ce3+は優れたシンチレーション特性を有し、高光収率、良好なエネルギー分解能、および速い減衰時間を有する[1〜4]。これらの成果にもかかわらず、なおより良好なシンチレーターの追求のための試みがされている。
比較的小さい(5×3×2mm3)PrBr3:5%Ce3+およびPrBr3:20%Ce3+の単結晶を、Bridgman技法で作られたCeBr3およびPrBr3から成長した元の結晶原石から切り出した。出発原料は、ハロゲン化アンモニウム法により、Pr2O3 (Heraeus、 99.999%)、NH4Br (Merck、 > 99.9%)、およびHBr (47% Merck、 proanalysis)から調製した[8,9]。PrBr3 が空間群P63/m を伴うUCI3 型構造に結晶化する[10] (no. 176)。この構造および格子パラメータに基づき、PrBr3 は5.27 g/cm3の計算密度ρr、および48.27というZeff実効原子番号を有する。実験設備の詳細は文献[4]で見つけることができる。
室温で記録したPrBr3:5%Ce3+およびPrBr3:20%Ce3+のX線励起放出スペクトルを図3に示す。各スペクトルはこのシステムの伝送に対して補正され、および10μ秒の付形時間で記録したパルス高スペクトルから得た光子/MeV単位の絶対的な光収率に全ての波長にわたる積分が等しくなるように標準化される。
我々は、γ線検知のための、新しいシンチレーター、PrBr3:5%Ce3+を紹介した。LaBr3:5%Ce3+よりも低い光収率(16,000〜21,000光子/MeVまで)および、より速いシンチレーション減衰時間(〜10n秒)が記録された。この速いエネルギー伝達が提供され、および10Kおよび室温で記録したCe3+放出の減衰時間は、Ce3+放出が室温で早くなることを示した。
[1] O. Guillot-Noel , J. T. M de Haas, P. Dorenbos, C. W. E. van Eijk, K. W.
Kramer, H. U. G[upsilon]del, Jounal of Luminescence 85 (1999) 21.
[2] E. V. D. van Loef, P. Dorenbos, C. W. E. van Eijk, K. W. Kramer, H. U. G[upsilon]del, Appl. Phys. Lett. 79 (2001 ) 1573.
[3] K. S. Shah, J. Glodo, M. Klugerman, W. Higgins, T. Gupta, P. Wong, W. W. Moses, S. E. Derenzo, M. J. Weber, P. Dorenbos, IEEE Trans. Nucl. Sci. 51 (2004) 2302.
[4] M. D. Birowosuto, P. Dorenbos, C. W. E. van Eijk, K. W. Kramer, H. U. G[upsilon]del, IEEE Trans. Nucl. Sci. 52 (2005) 1114.
[5] P. Dorenbos, R. Visser, C. W. E. van Eijk, N. M. Khaidukov, M. V. Korzhik, IEEE Trans. Nucl. Sci. 40 (1993) 388.
[6] P. Dorenbos, Nucl. Instr. Meth. Phys. Res. A 486 (2002) 208.
[7] P. Dorenbos, E. V. D. van Loef, A. J. P. Vink, E. van der KoIk, C. W. E. van Eijk, K. W. Kramer, H. U. G[upsilon]del, W. M. Higgins, K. S. Shah, Journal of Luminescence xx (20Ox) in publication.
[8] J. B. Reed, B. S. Hopkins, L. F. Audrieth, Inorg. Synth..1 (1936) 28.
[9] G. Meyer, Inorg. Synth. 25 (1989) 146
[10] B. Schmid, B. HaIg, A. Furrer, W. Urland, R. Kremer, J. Appl. Phys. 61 (1987) 3426
[11] E. V. D. van Loef, P. Dorenbos, C. W. E. van Eijk, K. W. Kramer, H. U. G[upsilon]del, Nucl. Instr. Meth. Phys. Res. A 486 (2002) 254
[12] G. Bizarri, J. T. M. de Haas, P. Dorenbos, C. W. E. van Eijk, IEEE Trans. Nucl. Sci. xx (20Ox) in publication [13] K. R. German, A. Kiel, Phys. Rev. B 8 (1973) 1846
Claims (18)
- Pr(1−x−y)LnyCexX3の化学式の化合物を含んでなるシンチレーター材料であって、ここで
Lnは、La、Nd、Pm、Sm、Eu、Gd、Yの群の、元素またはこれらの少なくとも二つの元素の混合物から選択され;
Xは、Cl、Br、Iの群の、ハロゲン原子またはこれらの少なくとも二つのハロゲン原子の混合物から選択され;
xは0.0005より大きく1より小さく;
yは0から1未満であり;
(x+y)は1未満であり;
yが(1−x)/2未満であり;および
xが0.9未満である、シンチレーター材料。 - xが0.005より大きい、請求項1に記載のシンチレーター材料。
- xが0.4未満である、請求項1または2に記載のシンチレーター材料。
- 本質的にPr(1−x−y)LnyCexX3の化学式の化合物からなる、請求項1〜3のいずれか1項に記載のシンチレーター材料。
- Pr(1−x−y)LnyCexX3の化学式の化合物からなる、請求項1〜4のいずれか1項に記載のシンチレーター材料。
- yが0である、請求項1〜5のいずれか1項に記載のシンチレーター材料。
- XがBrである、請求項6に記載のシンチレーター材料。
- XがI(ヨウ素)または50モル%以上のハロゲン原子Iを含むハロゲン原子混合物であり、且つLnはLa、Ndまたはこれらの混合物の群から選択される、請求項1〜6のいずれか1項に記載のシンチレーター材料。
- Xが50モル%未満のI(ヨウ素)を含んでいる、請求項1〜6のいずれか1項に記載のシンチレーター材料。
- 単結晶の形である、請求項1〜9のいずれか1項に記載のシンチレーター材料。
- 単結晶の体積が少なくとも10mm3である、請求項10に記載のシンチレーター材料。
- 粉末の形である、請求項1〜9のいずれか1項に記載のシンチレーター材料。
- バインダーと混合されるか、焼結されるか、または充てんされる、請求項12に記載のシンチレーター材料。
- 請求項1〜13のいずれか1項に記載のシンチレーター材料を含んでなる、シンチレーション検知器。
- 請求項14に記載のシンチレーション検知器を含んでなる、PETスキャナー。
- 飛行時間機能を有する、請求項15に記載のPETスキャナー。
- ガンマおよび/またはX線および/または宇宙線検知に、請求項1〜13のいずれか1項に記載のシンチレーター材料を使用する方法。
- 計数率が100kcpsより大きい、請求項17に記載のシンチレーター材料を使用する方法。
Applications Claiming Priority (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP05020224A EP1764631A1 (en) | 2005-09-16 | 2005-09-16 | High light yield fast scintillator |
EP05020224.1 | 2005-09-16 | ||
EP05108644.5 | 2005-09-20 | ||
EP05108644 | 2005-09-20 | ||
PCT/EP2006/066427 WO2007031583A1 (en) | 2005-09-16 | 2006-09-15 | High light yield fast scintillator |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2009507979A JP2009507979A (ja) | 2009-02-26 |
JP5249032B2 true JP5249032B2 (ja) | 2013-07-31 |
Family
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Application Number | Title | Priority Date | Filing Date |
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JP2008530545A Expired - Fee Related JP5249032B2 (ja) | 2005-09-16 | 2006-09-15 | 高光収率高速シンチレーター |
Country Status (12)
Country | Link |
---|---|
US (1) | US7767971B2 (ja) |
EP (1) | EP1938127B1 (ja) |
JP (1) | JP5249032B2 (ja) |
KR (1) | KR101311695B1 (ja) |
CN (1) | CN101288003B (ja) |
AT (1) | ATE477509T1 (ja) |
AU (1) | AU2006290679B2 (ja) |
CA (1) | CA2622381C (ja) |
DE (1) | DE602006016149D1 (ja) |
EA (1) | EA012938B1 (ja) |
IL (1) | IL189932A (ja) |
WO (1) | WO2007031583A1 (ja) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
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FR2855830B1 (fr) * | 2003-06-05 | 2005-07-08 | Stichting Tech Wetenschapp | Cristaux scintillateurs du type iodure de terre rare |
US7541589B2 (en) * | 2006-06-30 | 2009-06-02 | General Electric Company | Scintillator compositions based on lanthanide halides, and related methods and articles |
US7767975B2 (en) | 2007-12-04 | 2010-08-03 | Saint-Gobain Cristaux Et Detecteurs | Ionizing radiation detector |
FR2929296B1 (fr) | 2008-03-31 | 2011-01-21 | Saint Gobain Cristaux Detecteurs | Recuit de monocristaux |
US8546749B2 (en) * | 2008-11-10 | 2013-10-01 | Schlumberger Technology Corporation | Intrinsic radioactivity in a scintillator as count rate reference |
US8536517B2 (en) * | 2008-11-10 | 2013-09-17 | Schlumberger Technology Corporation | Scintillator based radiation detection |
US8431885B2 (en) | 2010-05-19 | 2013-04-30 | Schlumberger Technology Corporation | Gamma-ray detectors for downhole applications |
RU2426694C1 (ru) | 2010-02-15 | 2011-08-20 | Общество С Ограниченной Ответственностью "Сцинтилляционные Технологии Радиационного Контроля" | Неорганический сцинтилляционный материал, кристаллический сцинтиллятор и детектор излучения |
US8912498B2 (en) * | 2010-05-10 | 2014-12-16 | University Of Tennessee Research Foundation | Halide scintillator for radiation detection |
KR101733025B1 (ko) | 2015-06-16 | 2017-05-08 | 경북대학교 산학협력단 | 섬광체 및 이의 제조 방법 |
CN109988577B (zh) * | 2017-12-27 | 2020-12-25 | 有研稀土新材料股份有限公司 | 稀土卤化物闪烁材料及其应用 |
CN110109172B (zh) * | 2019-04-09 | 2020-07-28 | 中国科学院高能物理研究所 | 宇宙射线测量装置 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
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NL1014401C2 (nl) | 2000-02-17 | 2001-09-04 | Stichting Tech Wetenschapp | Ceriumhoudend anorganisch scintillatormateriaal. |
JP3812938B2 (ja) | 2001-03-30 | 2006-08-23 | 独立行政法人産業技術総合研究所 | 紫外線励起希土類付活塩化物蛍光体 |
FR2840926B1 (fr) | 2002-06-12 | 2005-03-04 | Saint Gobain Cristaux Detecteu | Utilisation d'un creuset comprenant du carbone pour la croissance de cristaux comprenant un halogenure de terre rare |
FR2847594B1 (fr) | 2002-11-27 | 2004-12-24 | Saint Gobain Cristaux Detecteu | Preparation de blocs d'halogenure de terre rare |
FR2855830B1 (fr) | 2003-06-05 | 2005-07-08 | Stichting Tech Wetenschapp | Cristaux scintillateurs du type iodure de terre rare |
CN100434933C (zh) * | 2003-08-25 | 2008-11-19 | 斯特拉化学株式会社 | 闪烁体与放射线检测器以及放射线检查装置 |
US7084403B2 (en) * | 2003-10-17 | 2006-08-01 | General Electric Company | Scintillator compositions, and related processes and articles of manufacture |
EP1553430A1 (en) * | 2004-01-09 | 2005-07-13 | Stichting Voor De Technische Wetenschappen | High light yield thermal neutron scintillators |
FR2869115B1 (fr) | 2004-04-14 | 2006-05-26 | Saint Gobain Cristaux Detecteu | Materiau scintillateur a base de terre rare a bruit de fond nucleaire reduit |
-
2006
- 2006-09-15 EA EA200800839A patent/EA012938B1/ru not_active IP Right Cessation
- 2006-09-15 KR KR1020087006358A patent/KR101311695B1/ko not_active IP Right Cessation
- 2006-09-15 WO PCT/EP2006/066427 patent/WO2007031583A1/en active Application Filing
- 2006-09-15 US US12/067,099 patent/US7767971B2/en not_active Expired - Fee Related
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US7767971B2 (en) | 2010-08-03 |
US20090039269A1 (en) | 2009-02-12 |
IL189932A (en) | 2015-04-30 |
DE602006016149D1 (de) | 2010-09-23 |
EP1938127B1 (en) | 2010-08-11 |
CN101288003B (zh) | 2012-01-11 |
ATE477509T1 (de) | 2010-08-15 |
EA200800839A1 (ru) | 2008-08-29 |
AU2006290679A8 (en) | 2008-05-01 |
WO2007031583A1 (en) | 2007-03-22 |
EA012938B1 (ru) | 2010-02-26 |
EP1938127A1 (en) | 2008-07-02 |
KR101311695B1 (ko) | 2013-09-26 |
AU2006290679A1 (en) | 2007-03-22 |
CA2622381A1 (en) | 2007-03-22 |
CN101288003A (zh) | 2008-10-15 |
JP2009507979A (ja) | 2009-02-26 |
KR20080055841A (ko) | 2008-06-19 |
IL189932A0 (en) | 2008-08-07 |
CA2622381C (en) | 2014-05-20 |
AU2006290679B2 (en) | 2011-11-03 |
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