> For the complete documentation index, see [llms.txt](https://docs.materialsproject.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.materialsproject.org/apps/characterization-apps/x-ray-absorption-spectra-xas.md).

# X-ray Absorption Spectra (XAS)