Accurate decomposition of Electron Spin Resonance (ESR) spectrum is a crucial task to extract compound signal intensities of enamel fragments at different irradiation time, in particular for dose recovery accuracy. While it can be achieved manually, the task is laborious and repetitive. In this paper, we present a new freely available program “ESRfrag” that allows the alignment, merging, and computation of complex angular ESR spectra. This program is an open access web-based code, designed to specifically alleviate the daunting task of working with large amounts of ESR spectra for enamel fragment dating. ESRfrag provides an increased reliability and precision on the results compared to manual calculation by removing operators bias. The program can be freely access through the Geoarchaeology and Archaeometry Research Group website (https://www.garg.org.au/projects).

电子自旋共振（ESR）光谱的准确分解是提取不同辐照时间牙釉质碎片复合信号强度的关键任务，特别是对于剂量恢复精度。虽然可以手动完成，但这项任务既费力又重复。在本文中，我们提出了一个新的免费程序“ ESRfra g”，它允许对齐、合并和计算复杂的角 ESR 光谱。该程序是一个基于 Web 的开放访问代码，旨在专门减轻使用大量 ESR 光谱进行牙釉质碎片测年的艰巨任务。ESRfrag与手动计算相比，通过消除操作员的偏差，提供了更高的结果可靠性和精度。该程序可以通过 Geoarchaeology and Archaeometry Research Group 网站 (https://www.garg.org.au/projects) 免费访问。