采用对称零面积法的高统计涨落谱线峰位解析研究

Research on The Spectral Peak Position Based on High Statistical Fluctuation by Symmetric Zero-area Method

峰位分析的准确性是能谱稳谱质量的基础。为了提高峰位计算准确性和稳谱质量,针对航空γ能谱谱线高噪声特征,研究应用了采用柯西函数对称零面积法分析峰位,并且对比常用的高斯函数拟合法、峰面积法寻峰效果。结果表明针对高噪声的谱线寻峰,采用柯西函数的对称零面积法峰位计算方法,分析峰位更准确。

The accuracy of peak position analysis is the basis of the quality of stabled spectrum. In order to improve the accuracy of peak position calculation and the quality of stabled spectrum,in view of the high noise character of airborne gamma-ray spectrum,this article studied symmetric zero area of Cauchy function to analyze the peak position and compared this method with the commonly used Gaussian function fitting method,the peak area method. Based on high noise characteristics of spectral peak search,the results show that it is more accurate to adopt the symmetric zero-area of the Cauchy function calculation method to analyze the peak position.