摘要
介绍了一种在线式气溶胶监测方法,该方法利用γ放射性测量分析气溶胶中的放射性核素种类,在后期能谱处理中利用Gold解谱算法确定入射射线的能量和比例。为了得到解谱所需的响应矩阵,利用蒙特卡罗方法计算了测量装置对不同能量γ射线的响应能谱,并测试了算法的应用效果。提出了一种改进方法,克服了当响应矩阵较大时Gold算法计算较慢的运算速度问题。测试结果表明,改进算法能够在保证计算结果一致的情况下大幅提高运算速度。
A real- time radioactive aerosol monitor is introduced in the paper, which analyzes radionuclides in the aerosols by measuring its γspectrum. In spectrum analysis, Gold algorithm was used to calculate the ener- gies and ratios of gamma rays. To obtain the response matrix used in decomposition, Monte Carlo method was used in the paper to simulate the detector responses for gamma rays of different energies, and the application of Gold algorithm was tested too. To speed up the calculation of Gold algorithm in the case of large response ma- trix, an advanced algorithm is introduced in the paper, Results of the tests indicated that calculation speed has increased greatly for the same results.
出处
《核电子学与探测技术》
CAS
北大核心
2015年第1期66-69,共4页
Nuclear Electronics & Detection Technology
