|Table 1: List of the 15 lower energy levels of Ar I.|
|: level index. |
c/c: configuration and core description.
description from NIST, LS description from our CbA calculations.
Unprimed for core 2P3/2, primed for core 2P1/2.
Symbols *, , ° denote the most strongly mixed levels; all the levels with the same within a same configuration are mixed.
P.N.: Paschen notation.
E. exp.: experimental energy from NIST in cm−1.
Char.: character of the level: transitory/metastable/quasimetastable.