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Irradiated target containing Np-237 used for producing Pu-238 by means of research reactor irradiation

A technology of np-237 and pu-238, which is applied in the field of radioisotope irradiation production, can solve the problems of inability to carry out irradiation production of Pu-238, and achieve the effects of good economic benefits, high conversion rate, and improved cooling effect.

Active Publication Date: 2017-03-22
NUCLEAR POWER INSTITUTE OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] my country is currently unable to carry out Pu-238 irradiation production, and needs to rely on imports from abroad, and the research on Pu-238 irradiation production is also in its infancy

Method used

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  • Irradiated target containing Np-237 used for producing Pu-238 by means of research reactor irradiation
  • Irradiated target containing Np-237 used for producing Pu-238 by means of research reactor irradiation
  • Irradiated target containing Np-237 used for producing Pu-238 by means of research reactor irradiation

Examples

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Effect test

Embodiment 1

[0043] Such as Figure 1~4 As shown, a kind of research pile irradiation production Pu-238 of the present invention contains Np-237 irradiation target piece, comprises target piece cylinder 1 and is arranged on the upper end head 5 and lower end head 6 of target piece cylinder 1 two ends, and described target A target to be irradiated with high cooling performance is arranged in the barrel 1 .

[0044] The target body to be irradiated with high cooling performance includes an inner sleeve 2, the inner sleeve 2 is arranged in the center of the target cylinder 1 and its axis coincides with the axis of the target cylinder 1, the target cylinder 1 and the inner sleeve 2 There are several ring-shaped target bodies 3 whose axes coincide with the axis 1 of the target cylinder.

[0045] The annular target body 3 includes a cylindrical outer shell 31 and an inner shell 32, a core 33 is filled between the outer shell 31 and the inner shell 32, and ring-shaped sealing end plugs are arra...

Embodiment 2

[0051] Such as figure 1 , Figure 5-7 As shown, a kind of research pile irradiation production Pu-238 of the present invention contains Np-237 irradiation target piece, comprises target piece cylinder 1 and is arranged on the upper end head 5 and lower end head 6 of target piece cylinder 1 two ends, and described target A target body to be irradiated with high cooling performance is arranged in the barrel 1, and the target body to be irradiated with high cooling performance includes several evenly distributed target rods 4, between the 4 target rods, the target rods 4 and the target rods. There is a gap between the component cylinders 1 to form a cooling channel 8 .

[0052] The outside of the target rod 4 is a cylindrical shell 41 filled with a bull's-eye body 42 , and sealing plugs 43 are provided at both ends of the shell 41 .

[0053] Preferably, there are seven target rods 4 , one target rod 4 is arranged in the center of the target cylinder 1 , and the remaining six ta...

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Abstract

The invention discloses an irradiated target containing Np-237 used for producing Pu-238 by means of research reactor irradiation. The irradiated target comprises a target barrel, and an upper end head and a lower end head which are arranged at both ends of the target barrel, wherein a target body to be irradiated is arranged inside the target barrel, the target body to be irradiated has high cooling performance and good cooling effect, and is suitable for producing the Pu-238 by means of research reactor irradiation. With the adoption of the irradiated target disclosed by the invention, the Pu-238 can be irradiated, the conversion rate is high and the safety is good.

Description

technical field [0001] The invention belongs to the field of radioactive isotope irradiation production, and in particular relates to an irradiation target containing Np-237 for producing Pu-238 by using a research reactor. Background technique [0002] Radioisotope batteries (nuclear batteries) have the characteristics of small size, high energy density, long life, high reliability, and not affected by the environment. They can provide energy for spacecraft, microsatellites, and cardiac pacemakers. Pu-238 is the first discovered artificially synthesized plutonium isotope. It has the characteristics of moderate half-life, high power density, and light radiation shielding. It is an ideal radioisotope heat source material. The large-scale preparation of Pu-238 relies on irradiation of the target in the reactor, followed by purification by solvent extraction and ion exchange methods. At present, the two main production methods are: recovery of Np-237 from spent fuel and re-irr...

Claims

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Application Information

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IPC IPC(8): G21G1/02
CPCG21G1/02
Inventor 孙寿华李健朱磊
Owner NUCLEAR POWER INSTITUTE OF CHINA
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