| |
| | NIST Atomic Spectra Databases |
 | | Data are included for observed transitions of 99 elements and energy levels of 57 elements. |
 | | ASD contains data on about 950 spectra from about 0.4 Å to 500 µm, with about 75,000 energy levels and 110,000 lines, 44,000 of which have transition probabilities. |
 | | ASD contains data on about 950 spectra from about 1 Å to 200 µm, with about 70,000 energy levels and 90,000 lines, 40,000 of which have transition probabilities. |
| physics.nist.gov /PhysRefData/ASD1/choice.html?nist_atomic_spectra.html (377 words) |
|