Table 1
Atomic energy levels of hydrogen (in cm−1).
| Level | Coulomb /DKH | Coulomb/DKH/mass | Experimental |
|---|---|---|---|
| 1s | 0 | 0 | 0 |
| 2s | 82 303.923 | 82 259.124 | 82 258.954 |
| 2p3∕2 | 82 259.285 | ||
| 2p1∕2 | 82 258.917 | ||
| 2p | 82 304.240 | 82 259.440 | 82 259.163 |
| 3s | 97 545.453 | 97 492.357 | 97 492.222 |
| 3p | 97 545.607 | 97 492.511 | 97 492.293 |
| 3d | 97 545.773 | 97 492.678 | 97 492.341 |
| 4s | 102 880.238 | 102 824.234 | 102 823.853 |
| 4p | 102 880.304 | 102 824.304 | 102 823.882 |
| 4d | 102 880.366 | 102 824.368 | 102 823.903 |
| 4f | 102 880.882 | 102 824.881 | 102 823.914 |
Notes. Columns are: theoretical levels including the DKH contribution (second column), theoretical levels with DKH contributionand finite proton mass correction (third column), experimental values (fourth column) taken from Kramida et al. (2020). Experimental values generally indicate the weighted average over the spin-orbit components, except for the 2p level,for which fine structure is explicitely detailed.
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