Target material for neutron line generating device

Abstract

The invention relates to a target material for a neutron line generation device, which is high in strength, good in radiation damage resistance and small in radioactivity after being activated by neutrons, foaming can be inhibited, the heat dissipation performance of the target material is improved, and the service life of the target material is prolonged. According to the target material for the neutron line generation device, the target material comprises an acting layer and a heat conduction layer, the acting layer can act with incident particle lines to generate neutron lines, the heat conduction layer supports the acting layer, the heat conduction layer is made of a metal-based graphene nano composite material, and the metal-based graphene nano composite material is a metal-based graphene nano composite material. The thermal conductivity of the metal-based graphene nano composite material is improved by more than 20% relative to that of the metal matrix.

Description

technical field [0001] One aspect of the present invention relates to a target used in a radiation irradiation system, in particular to a target used in a neutron ray generating device. Background technique [0002] With the development of atomic science, radiation therapy such as cobalt 60, linear accelerator, and electron beam has become one of the main means of cancer treatment. However, traditional photon or electron therapy is limited by the physical conditions of the radiation itself. While killing tumor cells, it will also cause damage to a large number of normal tissues along the beam path; in addition, due to the different sensitivity of tumor cells to radiation, traditional radiation therapy Treatment for more radioresistant malignant tumors (eg glioblastoma multiforme, melanoma) is often less effective. [0003] In order to reduce radiation damage to normal tissues around the tumor, the concept of target therapy in chemotherapy (chemotherapy) has been applied to ...

AI Technical Summary

Problems solved by technology

[0004] In the accelerator boron neutron capture therapy, the accelerator boron neutron capture therapy accelerates the proton beam through the accelerator, the proton beam is accelerated to an energy sufficient to overcome the Coulomb repulsion of the target nucleus, and undergoes a nuclear reaction with the target to produce neutrons, so in the generation During the proton process, the target will be irradiated by a very high-energy level of accelerated proton beams, the temperature of the target will rise sharply, and the metal part of the target will easily bubble, which will affect the service life of the target.

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