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Scintillating materials, methods for fabricating the same, and methods for their use

A technology for scintillators and scintillation crystals, which can be used in luminescent materials, chemical instruments and methods, instruments, etc., and can solve the problems of low termination ability, high cost, and low atomic number.

Inactive Publication Date: 2009-07-08
GE HOMELAND PROTECTION
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Furthermore, it was found that the termination ability of this scintillator was lower than expected due to the relatively low atomic number of Ce:YAG
Therefore, for applications using this material, larger crystals are required, which can result in higher cost and larger size
[0008] Because of these and other shortcomings, there is an unmet need in the art for scintillators with improved light output and energy resolution upon gamma ray irradiation

Method used

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  • Scintillating materials, methods for fabricating the same, and methods for their use
  • Scintillating materials, methods for fabricating the same, and methods for their use
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Embodiment Construction

[0021] The present application discloses a scintillation material, which exhibits high efficiency and high energy resolution compared with a scintillator replaced only by chloride or bromide ions. More specifically, this application discloses the general formula A 2 LnBX 6 The scintillator, the scintillator uses trivalent cerium ions (Ce 3- ) And iodide (I - ). In this general formula, A can be thallium (Tl), a group IA element and a combination including at least one of the foregoing; Ln is cerium (Ce) and optionally lanthanum (La), yttrium (Y), gadolinium ( Gd), lutetium (Lu), praseodymium (Pr), bismuth (Bi, such as Bi 3+ ) And a combination including at least one of the foregoing; B may be a group IA element and a combination including at least one of the foregoing (for example, optionally, one or more elements that are the same as "A"); X is Iodine (I) or an iodine compound, wherein the iodine compound includes iodine (I) and an element selected from the group consisting of fl...

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Abstract

Disclosed herein are scintillating materials, methods for their manufacture, and method for their use. In one embodiment, a scintillator comprises the formula A2LnBX6, wherein A comprises thallium (Tl), a Group IA element, and combinations comprising at least one of the foregoing, Ln comprises cerium, B comprises a Group IA element, and X comprises iodine (I) or an iodine compound, wherein the iodine compound comprises iodine (I) and an element selected from the group consisting of fluoride (F), chloride (Cl), bromide (Br), and combinations comprising at least one of the foregoing. Also disclosed are radiation detectors and methods for their use.

Description

[0001] Statement on Federal Government Funding for Research and Development [0002] The present invention was completed under the funding of the US government under the contract number N66001-05-D6012 awarded by the National Security Agency. The US government has certain rights in this invention. Technical field [0003] The present invention generally relates to scintillating materials. Background technique [0004] Scintillation materials can be described as materials that emit fluorescence in the presence of high-energy electromagnetic radiation (such as gamma rays, X-rays, etc.). The mechanism by which these materials can produce this phenomenon is due to their ability to absorb electromagnetic radiation with wavelengths greater than that of visible light and release energy with wavelengths in the visible spectrum. Scintillators, such as bismuth germanate (BGO), thallium-doped sodium iodide (NaI:Th) and cerium-doped yttrium aluminum garnet (Ce:YAG) exhibit this kind of Stokes...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/85
CPCG01T1/2023C09K11/772
Inventor 阿洛克·M·斯里瓦斯塔瓦斯蒂芬·J·杜克洛斯霍利·A·科曼佐瑟吉奥·P·M·劳雷罗
Owner GE HOMELAND PROTECTION
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