[18a-A401-1~9] 23.1 Joint Session N "Informatics"

[18a-A401-4] Gigapixel Imaging XAFS data analysis by using machine learning

〇(B)Yusei Ito¹, Yasuo Takeichi¹, Hideitsu Hino², Kanta Ono¹ (1.Osaka Univ., 2.ISM)

Keywords:XAFS, Machine learning

Imaging XAFS realizes a high resolution and an ultra-wide field of view simultaneously. We obtained X-ray absorption spectra (XAFS) in the field of view of the centimeter scale with spatial resolution on the nanometer scale. In this study, we developed a method to classify spectra, and we analyzed 450 million spectra by using this method. As a result, we succeeded in finding a new chemical state that had been missed using conventional methods.