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Boron film cathode of neutron detector and preparing method thereof

A neutron detector and membrane cathode technology, which is applied in the field of neutron detector boron membrane cathode and its preparation, can solve the problems of late development of boron-coated detectors, affecting detector detection efficiency, poor adhesion of cathode boron membrane, etc. , to achieve the effect of low cost, good uniformity and high drift speed

Inactive Publication Date: 2014-08-20
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Application Information

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Problems solved by technology

[0003] Due to the late development of boron-coated detectors, there are few reports on quantitative boron-coated cathode technology at home and abroad, and the cathode boron film in the prior art has poor adhesion and poor uniformity, which affects the detection efficiency of the detector.

Method used

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  • Boron film cathode of neutron detector and preparing method thereof
  • Boron film cathode of neutron detector and preparing method thereof
  • Boron film cathode of neutron detector and preparing method thereof

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Experimental program
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Embodiment 1

[0033] Coat the boron film on the stainless steel sheet as follows, and follow the steps in sequence:

[0034] A. Cathode treatment: grinding, polishing, cleaning and drying the cathode;

[0035] B. Mix the raw material components except boron powder to obtain the coating liquid;

[0036] C. After evenly coating a layer of coating liquid on the cathode, evenly spray boron powder, and then apply a layer of coating liquid;

[0037] D. Incubate the obtained in step C at 92-96°C for 2-2.5 hours to obtain.

[0038] The raw material components of the boron film cathode of the neutron detector include: 100 parts of boron powder (amorphous enriched 10B boron powder (10B abundance of 90%, B content of 95%) from Dalian Boentan Technology Co., Ltd.), 20 parts (The average value of n is 2.3), 10 parts of curing agent (a mixture of polyetheramine curing agent D400 and phenalkamine curing agent TZ500 with a mass ratio of 1.2), 35 parts of organic solvent, 4 parts of toughening agent (QS-BE) , 7 par...

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Abstract

The invention discloses a boron film cathode of a neutron detector and a preparing method of the boron film cathode of the neutron detector. The boron film cathode of the neutron detector is detector cathode with good electrical properties and neutron sensitive performance. Conductive metal Al matrix is adopted for the cathode, and the surface of the cathode is coated with a neutron sensitive film. The neutron sensitive film comprises, by mass, 100 parts of boron powder, 15 parts to 25 parts of substance (the molecular formula of the substance is described in the instruction), 7 parts to 12 parts of curing agents and 30 parts to 40 parts of organic solvent. The boron film cathode of the neutron detector is simple in preparation, low in cost, high in adhesive force and good in uniformity, and the obtained detector is high in detection efficiency.

Description

Technical field [0001] The invention relates to a boron film cathode of a neutron detector and a preparation method thereof. Background technique [0002] The detection of neutrons occupies a special position in the detection technology. It is much more difficult than the detection of charged particles or gamma rays. It is mainly realized through its interaction with the nucleus to generate charged particles or gamma photons. In recent years, the advantages of boron-coated gas detectors over 3He or BF3 detectors have become prominent, and they have gradually become a major neutron detection tool. Quantitative boron-coated cathode technology is the most important thing in the manufacture of boron-coated gas detectors, which is related to the determination of the detector's performance parameters and the selection of the environment in which it is used. [0003] Due to the late development of boron-coated detectors, there are few reports on quantitative boron-coated cathode technolo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T3/00C09D1/00
Inventor 魏志勇陈国云朱立方美华张紫霞雷胜杰
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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