References and Notes for Potassium ( K )

D26 T. L. de Bruin, Z. Phys. 38, 94 (1926).
E31 E. Ekefors, Z. Phys. 71, 53 (1931).
E99 R. Engleman, unpublished wavenumber measurements (1999) quoted in [M03]. The uncertainty of the K I 4p 2P° levels is probably less than 0.001 cm-1.
FW96 J. R. Fuhr and W. L. Wiese, NIST Atomic Transition Probability Tables, CRC Handbook of Chemistry & Physics, 77th Edition, D. R. Lide, Ed., CRC Press, Inc., Boca Raton, FL (1996).
K87 R. L. Kelly, J. Phys. Chem. Ref. Data 16, Suppl. 1 (1987).
L70b U. Litzén, Phys. Scr. 1, 251 (1970).
M03 D. C. Morton, Astrophys. J. Suppl. Ser. 149, 205 (2003).
M91 D. C. Morton, Astrophys J. Suppl. Ser. 77, 119 (1991).
R56 P. Risberg, Ark. Fys. 10, 583 (1956).
SC85 J. Sugar and C. Corliss, J. Phys. Chem. Ref. Data 14, Suppl. 2 (1985). We have increased the 3d 2D°5/2 and 2D°3/2 levels by 0.020 and 0.016 cm-1, respectively, in accordance with the new values for the 4p 2P° levels [E99].
WSM69 W. L. Wiese, M. W. Smith and B. M. Miles, Natl. Stand. Ref. Data Ser., Natl. Bur. Stand. (U.S.) 22 (1969).