Anthracene crystal and preparation method and application thereof

A technology of crystal and furnace body, applied in the field of anthracene crystal and its preparation, can solve problems such as unreported problems in the field of X-ray imaging, and achieve the effects of good environmental stability, fast response speed and cost reduction

Pending Publication Date: 2021-12-31
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] It is precisely because of the huge difference between the two ray sources that although organic scintillators have been used in gamma ray detection research, their application in the field of X-ray imaging has not yet been reported.

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  • Anthracene crystal and preparation method and application thereof
  • Anthracene crystal and preparation method and application thereof
  • Anthracene crystal and preparation method and application thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0062] A method for preparing anthracene crystals. The white purified anthracene powder is deposited by a vapor phase deposition method to obtain anthracene crystals. The vapor phase deposition method is as follows: prepare a tube furnace as a furnace body, and set one end of the furnace body as a second In the second high temperature zone, the other end of the furnace body is set as the second room temperature zone, and the temperature of the second room temperature zone is room temperature 20-25°C. Prepare a 2cm x 2cm x 0.5cm quartz sheet as the substrate, place the substrate in the second room temperature zone, and place the purified anthracene powder in the second high temperature zone of the furnace under a protective atmosphere and a vacuum of 30 Pa. In the second high temperature zone, the gradient heating method is used for heating. After the heating is completed, it is naturally lowered to room temperature, and anthracene crystals are obtained on the substrate. 150°C,...

Embodiment 2

[0066] A method for preparing anthracene crystals. The white purified anthracene powder is deposited by a vapor phase deposition method to obtain anthracene crystals. The vapor phase deposition method is as follows: prepare a tube furnace as a furnace body, and set one end of the furnace body as a second In the second high temperature zone, the other end of the furnace body is set as the second room temperature zone, and the temperature of the second room temperature zone is room temperature 20-25°C. Prepare a 2cm × 2cm × 0.5cm quartz plate as the substrate, place the substrate in the second room temperature zone, and place the purified anthracene powder in the second high temperature zone of the furnace under a protective atmosphere and a vacuum of 25 Pa. In the second high-temperature zone, a gradient heating method is used for heating. After the heating is completed, it is naturally lowered to room temperature, and anthracene crystals are obtained on the substrate. 135°C, t...

Embodiment 3

[0070] A method for preparing anthracene crystals. The white purified anthracene powder is deposited by a vapor phase deposition method to obtain anthracene crystals. The vapor phase deposition method is as follows: prepare a tube furnace as a furnace body, and set one end of the furnace body as a second In the second high temperature zone, the other end of the furnace body is set as the second room temperature zone, and the temperature of the second room temperature zone is room temperature 20-25°C. Prepare a 2cm x 2cm x 0.5cm quartz sheet as the substrate, place the substrate in the second room temperature zone, and place the purified anthracene powder in the second high temperature zone of the furnace under a protective atmosphere and a vacuum of 30 Pa. In the second high-temperature zone, the gradient heating method is used for heating. After the heating is completed, the temperature is naturally lowered to room temperature, and anthracene crystals are obtained on the subst...

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Abstract

The invention discloses an anthracene crystal and a preparation method and application thereof. The anthracene crystal is well applied to X-ray imaging and CT scanning imaging as a scintillator. The anthracene crystal emits light after being irradiated by X-rays, the luminous intensity is linearly changed along with the X-ray dose, and the anthracene crystal can be used for qualitative and quantitative detection of the X-rays. Tests in an X-ray imaging device show that the anthracene crystal has good resolution, short decay time and high response speed, the anthracene crystal is applied to X-ray imaging as a scintillator for the first time, the anthracene crystal also shows stable cycle performance and good environmental stability, the raw material price is low, and the cost of an X-ray detector can be greatly reduced.

Description

technical field [0001] The invention belongs to the technical field of organic scintillators, and in particular relates to an anthracene crystal and its preparation method and application. Background technique [0002] Since Rontgen discovered X-rays in 1895, the era of using X-rays to detect the internal structure of objects has been created. From the earliest X-ray film and X-ray fluorescent screen imaging to the widely used direct digital X-ray imaging (Direct Radiography, DR) and computed tomography (Computed Radiography, CT), X-ray imaging technology has been widely used in medical diagnosis, industrial non-destructive testing and Scientific research and many other fields have always played an important role. [0003] Since the human naked eye cannot directly observe X-rays, the signal needs to be converted by a detector. In the 1990s, the direct digital X-ray imaging system (Direct Radiography, or DR) realized the conversion of incident X-rays into visible light sign...

Claims

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Application Information

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IPC IPC(8): G01T1/202G01N23/04G01N23/046C30B23/00C30B29/54C07C15/28C09K11/06
CPCG01T1/2023G01N23/04G01N23/046C30B29/54C30B23/00C07C15/28C07B2200/13
Inventor 胡文平陈明希张小涛任晓辰
Owner TIANJIN UNIV
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