Reconstruction of a 6-MeV bremsstrahlung spectrum by multi-layer absorption based on LiF:Mg, Cu, P

In this paper, TLD （LiF： Mg, Cu, P） is used as detector. A multi-layer absorption （MLA） model is designed. Combined with Monte-Carlo processes, a bremsstrahlung X-ray spectrum is reconstructed by an iterative method; the reconstructed results agree with the results of simulations by the MCNP process essentially, especially in middle energy region.

基于多层吸收法的6 MeV电子能谱重建的研究

电子能谱的测量是电子加速器性能检测的重要环节。本文设计了一种新的测量方法——多层吸收法来对电子能谱进行测量,它是基于在辐照电子加速器上应用最多的射程法,加入Monte-Carlo模拟和迭代算法而重建出入射电子能谱的一种方法。该方法具有操作简便、测量准确、无需复杂设备等优点。本文用该方法对6 MeV加速器的电子能谱进行了测量,得到了较好的结果,且与磁谱仪的测量结果在误差范围内符合得很好,验证了其可行性。