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NIST Atomic Spectra Database Lines Data

La (all spectra): 3 Lines of Data Found 

Example of how to reference these results:
Kramida, A., Ralchenko, Yu., Reader, J., and NIST ASD Team (2023). NIST Atomic Spectra Database (ver. 5.11), [Online]. Available: https://physics.nist.gov/asd [2024, July 12]. National Institute of Standards and Technology, Gaithersburg, MD. DOI: https://doi.org/10.18434/T4W30F
BibTex Citation (new window)
 
No explicit information on uncertainties of observed or Ritz wavelengths is available in ASD for this selection of lines.
Wavelength range: 397 - 400 nm
λ in: vacuum below 200 nm, air between 200 and 2000 nm, vacuum above 2000 nm
Highest relative intensity: 4400

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


Ion  Observed 
 Wavelength 
 Air (nm) 
 Ritz 
 Wavelength 
 Air (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.
                                   
La II  398.852    398.8515+   4400  9.7e+07    B 3 250.35   28 315.25   5d6s   a 3  3   5d6p   y 3D°   3  T7455 L3475
La I    399.4164+     3.4e+06    B 3 010.002  28 039.45   5d2(3F)6s   4  5/2   5d6s(1D)6p   °   7/2  T9460  
La II  399.575    399.5745+   3600  7.2e+07    B+ 1 394.46   26 414.01   5d2      2   5d6p   x 3F°   2  T7455 L3475

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