A method for encapsulating organic scintillation crystals

A technology of scintillation crystals and packaging methods, which is applied in the direction of radiation measurement and instruments, can solve the problems of reduced crystal effective volume, weak interaction force, and decreased fluorescence intensity, so as to reduce the reduction of fluorescence intensity, reduce the volume, Good light transmission performance

Active Publication Date: 2022-02-08
INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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Problems solved by technology

Due to the weak interaction between organic molecules, organic scintillation crystals are fragile, difficult to process, and the yield of processing is low. In addition, irregular edges and corners will be cut off during processing, which greatly reduces the effective volume of the crystal. The intensity decreases obviously, and the detection efficiency will decrease accordingly.

Method used

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  • A method for encapsulating organic scintillation crystals

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Embodiment 1

[0026] This embodiment is the encapsulation of 9,10-diphenylanthracene single crystal.

[0027] a. Silicone rubber casting

[0028] After cleaning and drying the cylindrical stainless steel packaging shell with a titanium dioxide film on the inner wall, place it stably, and pour a certain volume of raw methyl vinyl silicone rubber into it. The volume of the raw rubber is slightly larger than the volume of the packaging shell and the volume of the crystal. Difference.

[0029] b. Organic scintillation crystal placement

[0030] Place the 9,10-diphenylanthracene single crystal horizontally on the upper center of the raw silicone rubber, and ensure that the (1,1,-1) crystal face of the 9,10-diphenylanthracene single crystal faces upward and is aligned with the The upper surface of the packaging shell is parallel.

[0031] c. Vacuum exhaust forming

[0032] Carefully move the packaging shell containing raw silicone rubber and 9,10-diphenylanthracene single crystal in a vacuum ...

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Abstract

The invention discloses a packaging method for organic scintillation crystals. The packaging method comprises silicone rubber casting, placement of organic scintillation crystals, vacuum exhaust molding, and room temperature radiation curing. The packaging method of the organic scintillation crystal of the present invention can save the processing steps of the organic scintillation crystal, reduce the reduction of the volume of the organic scintillation crystal and the decrease of the fluorescence intensity caused by the processing, and the cast silicone rubber can not only realize the fixation of the organic scintillation crystal, It can also enhance the shock resistance of organic scintillation crystals.

Description

technical field [0001] The invention belongs to the field of radiation protection and detection, and in particular relates to a packaging method for organic scintillation crystals. Background technique [0002] Organic scintillation crystals have excellent photoelectric properties, and their faster luminescence decay and higher luminous efficiency make them more efficient in detecting neutrons and gamma rays. Moreover, some organic scintillation crystals have excellent neutron / γ-ray pulse shape resolution capabilities, and have good application prospects in neutron detection. However, the growth conditions of organic scintillation crystals are relatively harsh, and it is difficult to grow large-volume, high-quality perfect crystals, which is still a research difficulty in this field. [0003] The solution method is a common method for the growth of organic scintillating crystals. The solution method is to first dissolve the constituent elements (solute) of the crystal in an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01T7/00
CPCG01T7/00
Inventor 刘秀华宋宏涛谭昭怡赖财锋朱通华穆龙李余
Owner INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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