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1 引言随着正电子湮没技术在材料科学各领域中研究的迅速普及,掌握有效的解谱技术,迅速可靠地完成实验数据的处理分析,对促进正电子湮没技术在各个领域的发展,加速探索新材料的进程,有着极为重要的意义。目前,国内通用的计算机寿命谱的方法存在三个明显的缺点:第一,解谱者必须先输入拟合初始值,再用迭代法进行运算,如果拟合初始值给的不好,解谱的运算过程将会很长,甚至还可能得不到结果。由此,解谱者必须具备一定的经验。但对于新材料,即使有一定的经验也难以给出较好的拟合初始值及处理分析实验结果;
1 Introduction With the rapid spread of positron annihilation technology in various fields of materials science, mastering effective spectrum analysis techniques and quickly and reliably completing experimental data processing and analysis, it is of great significance to promote the development of positron annihilation techniques in various fields and accelerate exploration The process of new materials, has a very important significance. At present, there are three obvious shortcomings of the commonly used computer life spectrum method in our country. First, the spectrum broker must first enter the initial value of the fitting and then use the iterative method to perform the operation. If the fitting initial value is not good, The calculation process will be very long, and may not even result. As a result, spectrumrs must have some experience. However, for new materials, it is difficult to give a good initial value of fitting and experimental results of processing and analysis even though there is a certain amount of experience.