Particle beam imaging coating for spallation neutron source and preparation method thereof

A spallation neutron source and image coating technology, applied in radiation measurement, measurement devices, instruments, etc., can solve the problems of limited research reports and unpublished, and achieve the effect of high luminous efficiency

Active Publication Date: 2018-04-06
DONGGUAN NEUTRON SCI CENT +1
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Problems solved by technology

[0004] Due to the relatively few large-scale scientific infrastructures such as spallation neutron sources, related research reports are also very limited. Among the four major pulsed spallation neutron sources including China, only the spallation neutron source in the United States There are related introductions of image coating; and it is limited to the introduction that accurate judgment of the bombardment target can be achieved through image coating. As for the specific composition of the image coating, how to prepare the image coating, etc. have not been announced

Method used

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  • Particle beam imaging coating for spallation neutron source and preparation method thereof
  • Particle beam imaging coating for spallation neutron source and preparation method thereof
  • Particle beam imaging coating for spallation neutron source and preparation method thereof

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Embodiment

[0029] In this example, Al(NO 3 ) 3 9H 2 O, Cr(NO 3 ) 3 9H 2 O was used as raw material, and Cr was prepared by chemical synthesis 3+ :Al 2 o 3 Powder, as follows:

[0030] Al(NO 3 ) 3 9H 2 O and Cr(NO 3 ) 3 9H 2 O is placed in the nitrate solution to make it fully dissolve, and the pH value of the nitrate solution is about 4; Citric acid: (Al 3+ +Cr 3+ ) substance mass ratio is about 10, the titration is completed, and the resulting sol is the precursor; the precipitate is washed repeatedly with alcohol, and after the alcohol washing is completed, the precursor is dried at 60-80 degrees, and then calcined at 1220 degrees to obtain Cr 3 + :Al 2 o 3 Powder. control Al(NO 3 ) 3 9H 2 O and Cr(NO 3 ) 3 9H 2 The amount of O is such that the prepared Cr 3+ :Al 2 o 3 In powder, Cr 3+ The doping amount is 1.5% of the total weight. In order to make the prepared powder suitable for spraying, the calcined Cr 3+ :Al 2 o 3 The powder is prepared into a sph...

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Abstract

The invention discloses a particle beam image coating used for a spallation neutron source and a preparation method of the particle beam image coating. The particle beam image coating is coated on the outer surface of a front window of a bombarded target, and the main active ingredient of the particle beam image coating is Cr3+doped Al2O3 powder. The preparation method includes coating the Cr3+doped Al2O3 powder on the outer surface of the front window of the target by means of low-power flame spraying to form the image coating. The image coating is developed specially for the spallation neutron source which is a second spallation neutron source using the image coating in the world after an American spallation neutron source is developed. The particle beam image coating is high in light emitting efficiency, using needs on accurately judging beam current distribution and strength at a target position during particle beam bombarding of high-energy proton beam current or ion beam current can be met, and a foundation is laid for further study and development of the spallation neutron source in China.

Description

technical field [0001] The application relates to the field of particle beam imaging of a spallation neutron source target body, in particular to a particle beam imaging coating for a spallation neutron source and a preparation method thereof. Background technique [0002] The China Spallation Neutron Source is a major national science and technology infrastructure project. It is a tool to use neutrons to understand the microscopic world; Basic research and high-tech development research in the frontier fields of development and other disciplines provide a new and powerful large-scale scientific research platform. The China Spallation Neutron Source is the first spallation neutron source owned by a developing country. Together with the operating spallation neutron sources of the United States, Japan and the United Kingdom, it constitutes the world's four largest pulsed spallation neutron sources. [0003] Among them, the neutrons of the spallation neutron source are produce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01T1/29
Inventor 梁天骄纪全魏少红曾智蓉于全芝张锐强周斌彭浩然张鑫
Owner DONGGUAN NEUTRON SCI CENT
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