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NIST Atomic Spectra Database Lines Data

Ar (all spectra), Ca (all spectra): 3 Lines of Data Found 
Example of how to reference these results:
Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2024). NIST Atomic Spectra Database (ver. 5.12), [Online]. Available: https://physics.nist.gov/asd [2024, December 10]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F
BibTex Citation (new window)
 
Wavelength range: 396 - 397 nm
λ in: vacuum below 200 nm, air between 200 and 2000 nm, vacuum above 2000 nm
Highest relative intensity: 220

Query NIST Bibliographic Databases for
Ar CA (new window)
Ar CA Energy Levels
Ar CA Line Wavelengths and Classification
Ar CA Transition Probabilities

Ion  Observed 
 Wavelength 
 Air (nm) 		  Unc. 
 (nm) 		  Ritz 
 Wavelength 
 Air (nm) 		  Unc. 
 (nm) 		  Rel. 
 Int. 
(?) 		 Aki
 (s−1) 		  Acc.   Ei 
 (cm−1) 		    Ek 
 (cm−1) 		  Lower Level 
 Conf., Term, J 		  Upper Level 
 Conf., Term, J 		  Type   TP
Ref.		  Line
Ref.
                                       
Ar III  396.04872   0.00019  396.04900   0.00010    5       213 951.7743  -  239 194.033    3s23p3(2D°)3d   3P°   2   3s23p3(2P°)4p   3S   1    L11520
Ar II  396.83589   0.00002  396.835887  0.000007   59  4.8e+06    B 132 481.2068  -  157 673.4134   3s23p4(3P)3d   4D   5/2   3s23p4(3P)4p   4D°   5/2  T926 L11520
Ca II  396.847       396.8469       220  1.4e+08    C 0.00    -  25 191.51     3p64s   2S   1/2   3p64p   2P°   1/2  T8043 L7323

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