7.5MeV电子束转轫致辐射的理论研究初探

Theoretical Study on Bremsstrahlung Transferred From Electron Beam of 7.5 MeV

为研究电子束转轫致辐射的特性,采用FLUKA蒙特卡罗程序,研究了7.5 Me V电子束透过Cu、Ag、W、Ta、Water靶的电子、轫致辐射光子的特性,得到了利用轫致辐射进行辐照时的最佳靶厚度,以及在最佳靶厚度情况下的透射轫致辐射的能量密度分布。同时对不同束流扫宽情况下的能量利用率进行了初步探讨。本研究对7.5 Me V电子束转轫致辐射的靶设计及其辐射加工产业具有一定的理论指导意义。

The FLUKA Monte Carlo code was used for studying the bremsstrahlung emitted from various targets shot by7. 5 Me V electron beams. The simulation results show that efficiency of transmission photon and electrons,photon flux distribution and energy distribution of bremsstrahlung were related to material and thickness of the targets. For different beam sweep width,the energy utilization rate was estimated. The result has a certain guiding significance for target design of bremsstrahlung transferred from 7. 5 Me V electrons beams and optimization of irradiation facility.