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Detection method for low-dose nuclear radiation

A detection method and low-dose technology, applied in the field of nuclear radiation measurement, can solve the problems of low-dose nuclear radiation detection, such as low sensitivity, inability to detect, complicated operation, etc., and achieve the effect of promoting sustainable social development, simple operation, and simple process

Inactive Publication Date: 2013-11-20
李莹滢
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The current method for detecting nuclear radiation is complex in operation, high in cost, and low in sensitivity to low-dose nuclear radiation detection
For example, a Frick dosimeter has a sensitivity of 3×10 7 μGy, doses below which cannot be detected

Method used

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  • Detection method for low-dose nuclear radiation
  • Detection method for low-dose nuclear radiation
  • Detection method for low-dose nuclear radiation

Examples

Experimental program
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Effect test

Embodiment 1

[0029] CeO 2 Preparation of nanowires: 20ml concentration of 10mol / L NaOH solution was added dropwise to 20ml concentration of 0.01mol / L CeCl 3 ·7H 2 O solution, mix evenly, transfer the mixed solution to a 50ml polytetrafluoroethylene-lined stainless steel reaction kettle, seal and heat at a heating rate of 10°C / min, keep the temperature for 24h when heated to 180°C, and then Cool to room temperature at a cooling rate of 20°C / min to obtain a yellow precipitate, which is placed in a separation and washing device, washed with deionized water and ethanol for 5 times, and then dried in an oven at 60°C for 12 hours. CeO with a diameter of 10nm and a length of 100nm 2 Finished nanowires. Among them, for CeO 2 Sample characterization of the nanowires was examined, see Figure 4 , Figure 5 with Image 6 .

Embodiment 2

[0031] CeO 2 Preparation of nanowires: 20ml concentration of 5mol / L KOH solution was added dropwise to 20ml concentration of 0.06mol / L Ce(NO 3 ) 3 ·6H 2 O solution, mix well, transfer the mixed solution to a PTFE substrate stainless steel reactor with a capacity of 50ml, seal and heat at a heating rate of 20°C / min, keep the temperature for 36h when heated to 200°C, and then Cool down to room temperature at a cooling rate of 30°C / min to obtain a yellow precipitate, which is placed in a separation and washing device, washed with deionized water and ethanol for 6 times, and then dried in an oven at 70°C for 10 hours. CeO with a diameter of 30nm and a length of 400nm 2 Finished nanowires.

Embodiment 3

[0033] CeO 2 Preparation of nanowires: 20ml concentration of 3mol / L tetramethylammonium hydroxide solution was added dropwise to 20ml concentration of 0.08mol / L Ce 2 (SO 4 ) 3 ·8H 2 O solution, mix well, transfer the mixed solution to a 50ml polytetrafluoroethylene-lined stainless steel reaction kettle, seal and heat at a heating rate of 30°C / min, keep the temperature for 48h when heated to 160°C, and then Cool down to room temperature at a cooling rate of 40°C / min to obtain a yellow precipitate. Place the yellow precipitate in a separation and washing device, wash it with deionized water and ethanol for 8 times, and then dry it in an oven at 100°C for 8 hours. CeO with a diameter of 100nm and a length of 800nm 2 Finished nanowires.

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Abstract

The invention relates to a detection method for low-dose nuclear radiation, and belongs to the technical field of nuclear radiation measurement. The detection method comprises the following steps of a, preparing a solution, namely dispersing CeO2 nanowires into deionized water to form a CeO2 nanowire solution with the concentration of 1*10<-5>-1*10<-3> g / ml; b, performing detection, namely putting the CeO2 nanowire solution into a container, putting the container in a radiation environment to be detected, sampling the solution, and detecting an absorption spectrum, a transmittance spectrum and an emission spectrum of the radiated solution to obtain a detection result. The detection method has the beneficial effects of simpleness in operation and low cost; the nuclear radiation lower than 1,000 mu Gy can be detected; particularly in the range of 20-500 mu Gy, an extremely high linear response can be obtained.

Description

technical field [0001] The invention belongs to the technical field of nuclear radiation measurement, and in particular relates to a low-dose nuclear radiation detection method. Background technique [0002] Nuclear energy is the latest, cleanest, and lowest unit cost power resource. It has high stability, long life, and low pollution. It has obvious advantages in solving resource shortages and improving environmental quality. It is an important energy source for sustainable development. . But it is unavoidable that in the past half a century, nuclear radiation accidents caused by nuclear energy have brought great harm to human beings. Nuclear radiation accidents usually refer to accidents that cause casualties, environmental pollution, and economic losses due to the irradiation of uncontrolled radioactive substances or the irradiation of ionizing radiation equipment. In the application of nuclear energy and radiation technology, although a series of safety protection meas...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/04C01F17/00
Inventor 李莹滢董祥
Owner 李莹滢