XAS Database

Welcome to the XAS Database (XASDB), a comprehensive repository for X-ray Absorption Spectroscopy (XAS) data managed by the Canadian Light Source (CLS). Our mission is to support and enhance research in materials science, chemistry, physics, and related fields by providing open access to high-quality XAS spectra.

The XASDB aims to facilitate scientific discovery by making XAS data freely available to researchers worldwide. By sharing this valuable resource, we hope to promote collaboration, improve the reproducibility of research, and drive innovation across various scientific disciplines.

Creative Commons License

All data in the XASDB is provided under the Creative Commons Attribution 4.0 International (CC BY 4.0) license. This means you are free to Share and Adapt.

However, you must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.

Citation Guidelines

When using data from the XASDB in your research, please ensure to properly cite the database and the original dataset creators. A typical citation format may look like this:

Newville, M. (2024), 'XAS Database Data', Canadian Light Source, XASDB. https://doi.org/10.71622/XASLIB_535X-8J62. Sample IDs: 3flq8e, qw4w87.
Schoepfer, V.A. (2024), 'XAS Database Data', Canadian Light Source, XASDB. https://doi.org/10.20383/103.0895. Sample ID: lkqc9e.
Ravel, B. (2026), 'XAS Database Data', Canadian Light Source, XASDB. https://doi.org/10.18434/mds2-4032. Sample ID: dzwhud.

Citing the XASDB

Spasyuk, D. (2025) 'XASDB - Design and Implementation of an Open-Access Spectral Database', arXiv. https://doi.org/10.48550/arXiv.2509.13566
Note: When citing data from XASDB, always include the specific sample ID(s) for reproducibility. The database citation should be included when referencing the XASDB system itself or its methodology.

Data Contribution

We actively encourage the scientific community to contribute high-quality X-ray Absorption Spectroscopy data to the XASDB. By sharing your datasets, you contribute to a global, open-access resource that benefits researchers across multiple disciplines. All contributed data will be appropriately attributed to the original authors and institutions. If you are interested in contributing your data, please contact us for more information on the submission process.