Sample irradiation device for neutron activation

An irradiation device and sample technology, applied in the field of neutron activation sample irradiation technology and radioisotope preparation, to achieve the effect of compact structure, improved automation, safe operation, good stability and safety

Active Publication Date: 2017-12-29
INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the existence of the irradiator in the prior art, it does not have the ability to prevent the water in the irradiation box from polluting the sample box and the measuring tube and other utensils, monitor the radiation dose of the sample box out of the pile, and hover in the inactive area of ​​the pile to cool the overdosage. Insufficient technologies and functions such as sample boxes eliminate radiation hazards caused by over-dose sample boxes to the environmental space and staff they pass through during long-distance transshipment and safety hazards in the transmission of contaminated sample boxes, and improve the control of sample irradiation time accuracy, the invention provides a sample irradiation device for neutron activation

Method used

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  • Sample irradiation device for neutron activation
  • Sample irradiation device for neutron activation
  • Sample irradiation device for neutron activation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] figure 1 It is a structural block diagram of the sample irradiation device for neutron activation of the present invention, figure 2 It is a structural schematic diagram of the speed reducer in the present invention, image 3 for figure 2 A-A sectional view in, Figure 4 It is a structural schematic diagram of the irradiator in the present invention. exist Figure 1~Figure 4 Among them, the sample irradiation device for neutron activation of the present invention includes a controller 1, a speed reducer 2, an irradiator 3, a vacuum tank 4, a compressed air tank 5, and a gamma ray detector 6, and its connection relationship is: The speed reducer 2 and the irradiator 3 are arranged up and down and fixedly connected, the irradiator 3 is connected with the vacuum tank 4 and the compressed air tank 5 respectively, and the gamma ray detector 6 is fixedly connected with the irradiator 3; The device 2, the irradiator 3, and the γ-ray detector 6 are electrically connected...

Embodiment 2

[0034] This embodiment is the same as Embodiment 1, except that the gamma ray detector 6 is fixedly installed on the irradiation tube 25 above the photoelectric sensor II 29, and a group of spring mechanisms are arranged on the deceleration tube 8 .

[0035] In this embodiment, it is necessary to start the process of hovering and cooling the sample box 38 into and out of the irradiation tube 8 multiple times, so as to track and monitor the radiation dose of the sample box 38 at regular or irregular times.

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PUM

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Abstract

The invention discloses a sample irradiation device for neutron activation. The sample irradiation device comprises a controller, a speed reducer, an irradiator, a vacuum tank, a compressed air tank and a gamma ray detector, wherein the speed reducer and the irradiator are arranged up and down and are fixedly connected; the irradiator is respectively connected with the vacuum tank and the compressed air tank; the gamma ray detector is fixedly connected with the irradiator; the speed reducer, the irradiator and the gamma ray detector are respectively and electrically connected with the controller. The sample irradiation device for the neutron activation, disclosed by the invention, is used as one of important and key components of an online neutron activation sample transmission and analysis system, has the functions of reducing the speed of rapidly transmitted sample boxes, hovering activated samples, particularly irradiated overdose samples, in reactor pool water outside a reactor activity zone for cooling and discharging water accumulated at the bottom part of an irradiation pipe, is more beneficial for radiation protection of environment and staff and is good in running stability and running safety.

Description

technical field [0001] The invention belongs to the technical fields of neutron activation sample irradiation technology and radioisotope preparation, and in particular relates to a sample irradiation device for neutron activation. Background technique [0002] The neutron activation analysis uses the thermal neutrons of the reactor to activate the sample by irradiation, and uses nuclear analysis instruments such as a gamma spectrometer to conduct qualitative and quantitative analysis of the specified radionuclide in the activated sample. For activated samples containing long-lived nuclides, like most targets used for radioisotope production, the sample box can be manually placed in the irradiation box and sent into the irradiation tunnel for a long time in the shutdown state. Then take out the irradiation box and transfer it to the thermal chamber to take out the irradiated sample box, put it into a lead tank and transfer it to the designated place for sample processing and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/44G21K5/10G01T1/02G01N23/00
CPCG01N1/44G01N23/00G01N2223/1013G01N2223/646G01T1/02G21K5/10
Inventor 刘国平陈静王关全牟婉君陈琪萍李兴亮刘业兵党宇峰徐存礼王定林
Owner INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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