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Quantitative detection and comprehensive evaluation method for novel X-ray imaging scintillator material

A scintillator material and quantitative detection technology, which is applied in the direction of material analysis, material analysis, and measurement devices using wave/particle radiation, can solve the problems of harsh preparation conditions and expensive prices, and achieve the effect of simple operation

Pending Publication Date: 2020-08-25
SHANDONG UNIV OF TECH
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Problems solved by technology

Common inorganic scintillators are NaI(TI), CsI(TI), YAlO 3 (Ce), Bi 4 GeO 12 、Gd 2 o 2 S(Tb), etc., although these bulk crystals can be effectively tested by X-rays, the preparation conditions are harsh and expensive

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  • Quantitative detection and comprehensive evaluation method for novel X-ray imaging scintillator material

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Embodiment Construction

[0028] The preferred embodiments of the present invention will be described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0029] 1. CsPbBr 3 Experimental sample preparation and synchrotron radiation X-ray coaxial imaging detection optical path construction

[0030] Place the 90° PbBr 2 The precursor solution was injected into the Cs precursor solution at a molar ratio of 4:1, and stirred vigorously at room temperature. After two minutes, the mixed solution system turned green, and CsPbBr was collected by centrifugation at 4000rpm. 3 Nanosheets, uniformly layered and injected on PET substrates, self-assembled CsPbBr with controllable thickness and stable performance 3 Thin film scintillator, the thickness of which is 50 microns, the area is 40mm×40mm square, such as image 3 shown. ...

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Abstract

The invention discloses quantitative detection and comprehensive evaluation method for imaging characteristics of a novel material of an X-ray scintillator. Specifically, aiming at a novel perovskite-based nanocrystal material, a set of practical, objective, comprehensive and accurate detection light paths and a data acquisition and processing and quantitative calculation method are designed by utilizing a high-brightness and energy-continuously-adjustable synchrotron radiation X-ray imaging device, and therefore the purpose that the novel material is used for comprehensively and objectively evaluating an X-ray imaging scintillator is effectively realized. The detection technology comprises the following steps: designing and constructing a detection light path; preparing and installing a new material scintillator; acquiring and processing high-resolution data; adopting a new material luminous efficiency calculation method; comprehensively evaluating the imaging resolution and sensitivity by adopting an image MTF function and a contrast-to-noise ratio, and the like. The novel detection technology is great in universality and can be used for comprehensive quantitative detection and evaluation of characteristics of X-ray luminescent functional materials with different energies.

Description

technical field [0001] The invention belongs to the quantitative detection and evaluation of X-ray imaging scintillators, and specifically relates to the detection optical path design, parameter adjustment, data acquisition and processing, photoluminescence efficiency calculation, and imaging quality of new perovskite nanocrystal materials used in X-ray imaging scintillators. The full-cycle technical method and application of comprehensive evaluation. Background technique [0002] In recent years, with the development of X-ray detectors and new light source technologies, especially the use of the third-generation synchrotron radiation light source in the 1990s, X-ray imaging has been brought to a new level. The synchrotron radiation device is composed of an electron linear accelerator, an intensifier, a storage ring, and a beamline station. After being accelerated by the linear accelerator, the electrons enter the intensifier ring and accelerate to reach a predetermined ener...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N23/046G01N1/38G01N1/28
CPCG01N1/2813G01N1/38G01N23/046
Inventor 刘慧强秦华魏功祥
Owner SHANDONG UNIV OF TECH
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