论文标题
用于评估正电子 - 电子歼灭线的巧合多普勒拓宽光谱的新型数据分析工具
Novel Data Analysis Tool for the Evaluation of Coincidence Doppler Broadening Spectra of the Positron-Electron Annihilation Line
论文作者
论文摘要
511 KEV歼灭线的一致多普勒拓宽光谱（CDB）揭示了物质中歼灭位点的元素特征。因此，CDB可以分析宿主基质中的外源原子，空缺溶质复合物和固体中的沉淀。由于缺乏用于分析CDBS数据的综合程序，我们开发了一个基于模块化的Python开源软件解决方案，用于可靠提取歼灭线，以提供所谓的比率曲线，突出了光谱中的元素签名。特别是，新程序允许读数和光谱平均多个检测器对。此外，我们实施了一种改进的算法，以进一步将背景降低了大约一个数量级，在高多普勒偏移下。
Coincidence Doppler Broadening Spectroscopy (CDBS) of the 511 keV annihilation line reveals the elemental signature at the annihilation site in matter. For this reason, CDBS enables the analysis of foreign atoms in the host matrix, vacancy-solute complexes and precipitates in solids. Due to the lack of a comprehensive program for the analysis of CDBS data we developed a modular python-based open source software solution for the reliable extraction of the annihilation line to provide so-called ratio curves highlighting the elemental signature in the spectra. In particular, the new program allows the readout and spectra averaging of multiple detector pairs. Moreover, we implemented an improved algorithm to further reduce the background by about one order of magnitude at high Doppler shifts.
