Atomic Spectra Viewer
NIST emission lines, for working out what is glowing in a discharge tube. Opens on the strong lines, 180–1100 nm; switch to the full ASD catalogue when you need everything. Pick up to three elements; scroll to zoom, drag to pan, double-click to reset.
Loading libraries…
Line finder
Search the selected library for lines near a wavelength. The index is split into 25 nm chunks, so a search pulls about 30 KB rather than the whole thing.
± nm
The libraries
NIST Handbook
Default. 11,996 strong lines from SRD 108, 2,401 flagged persistent. Stages I–II. Manifest
NIST ASD 5.12
209,390 lines, 376 species, stages I–V, 100 nm to 5 µm, with Aki where NIST has it. The LIBS analyzer uses the same data cut to 180–1100 nm. Manifest
Below ~185 nm NIST quotes vacuum and applies no conversion. The viewer checks whether a line was actually converted rather than guessing from its wavelength, and tags the ones that were not vac.