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US 6,787,250 B2Granted
Radiation detection
AssigneeJapan Science and Technology Agency
InventorsKengo Shibuya, Masanori Koshimizu, Yuko Takeoka, Keisuke Asai
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AssigneeJapan Science and Technology Agency
InventorsKengo Shibuya, Masanori Koshimizu, Yuko Takeoka, Keisuke Asai
Estimating the term…
This invention relates to a radiation detection device for detecting ionizing beam discharges such as gamma rays, x-rays, electron beams, charged particle beams and neutral particle beams. Specifically, it relates to a radiation detection device which can measure radiations which exist for a very short time (of the order of subnanoseconds or less) from the appearance of photoemission to extinction. It is an object of this invention to provide a radiation detection device using a perovskite organic-inorganic hybrid compound as a scintillator, the formula of this compound being (R1—NR113)2MX4 or (R2═NR122)2MX4, or alternatively, (NR133—R3—NR133)MX4 or (NR142═R4═NR142)MX4 (in the formula, R1 is a monovalent hydrocarbon group which may contain a heterocyclic ring and may be substituted by halogen atoms, R2 is a divalent hydrocarbon group which may contain a heterocyclic ring and may be substituted by halogen atoms, and may be cyclic, R3 is a divalent hydrocarbon group which may contain a heterocyclic ring and may be substituted by halogen atoms, R4 is a tetravalent hydrocarbon group which may contain a heterocyclic ring and may be substituted by halogen atoms, R11-R14 may be identical or different, and may be hydrogen atoms or alkyl groups having two or more atoms, M is a Group IVa metal, Eu, Cd, Cu, Fe, Mn or Pd, and X is a halogen atom). This radiation detection device can quantify the radiation amount of the detected radiation.
A radiation detection device comprising a scintillator, wherein the scintillator is a perovskite organic-inorganic hybrid compound having the formula (R1—NR113)2MX4 or (R2NR122)2MX4, or alternatively, (NR133—R3—NR133)MX4 or (NR142═R4═NR142)MX4 (in the formula, R1 is a monovalent hydrocarbon group which may contain a heterocyclic ring and may be substituted by halogen atoms, R2 is a divalent hydrocarbon group which may contain a heterocyclic ring and may be substituted by halogen atoms, and may be cyclic, R3 is a divalent hydrocarbon group which may contain a heterocyclic ring and may be substituted by halogen atoms, R4 is a tetravalent hydrocarbon group which may contain a heterocyclic ring and may be substituted by halogen atoms, R11-R14 are, identical or different, hydrogen atoms or alkyl groups having less than two carbon atoms, M is a Group IVa metal, Eu, Cd, Cu, Fe, Mn or Pd, and X is a halogen atom).
A method comprising detecting radiation using a radiation detector, wherein the radiation detector includes a scintillator comprising a perovskite organic-inorganic hybrid compound having the formula (R1—NR113)2MX4 or (R2=NR122)2MX4, or alternatively, (NR133—R3—NR133)MX4 or (NR142=R4NR142)MX4 (in the formula, R1 is a monovalent hydrocarbon group which may contain a heterocyclic ring and may be substituted by halogen atoms, R2 is a divalent hydrocarbon group which may contain a heterocyclic ring and may be substituted by halogen atoms, and may be cyclic, R3 is a divalent hydrocarbon group which may contain a heterocyclic ring and may be substituted by halogen atoms, R4 is a tetravalent hydrocarbon group which may contain a heterocyclic ring and may be substituted by halogen atoms, R11-R14 are, identical or different, hydrogen atoms or alkyl groups having less than two carbon atoms, M is a Group IVa metal, Eu, Cd, Cu, Fe, Mn or Pd, and X is a halogen atom).
Dependencies are inferred from the claim text.