[ General Glossary, Quantum Glossary, Atomic Glossary ]
The Hydrogen Lyman Series

The Hydrogen Lyman Series are the series of transitions between the n = 1 shell (ie. the K-shell) and the n > 1 shells (ie L-, M-, N-shells etc). Given the abundance of hydrogen in the universe, these lines are very common and hence given short-hand, customary names:

Energy (eV) [Wavelength (nm)]	Ion	Lower Config Upper Config	Notes
10.19881 [121.56736]	HI	1s 2S1/2 2p 2Po1/2	Ly-alpha2 Aki = 6.265x108 s-1 fki = 1.388x10-1
10.19885 [121.56682]	HI	1s 2S1/2 2p 2Po3/2	Ly-alpha1 Aki = 6.265x108 s-1 fki = 2.778x10-1
12.08749 [102.57229]	HI	1s 2S1/2 3p 2Po1/2	Ly-beta3 Aki = 1.672x108 s-1 fki = 2.637x10-2
12.08751 [102.57218]	HI	1s 2S1/2 3p 2Po3/2	Ly-beta1 Aki = 1.672x108 s-1 fki = 5.275x10-2
12.74853 [97.25370]	HI	1s 2S1/2 4p 2Po1/2	Ly-gamma2 Aki = 6.818x107 s-1 fki = 9.668x10-3
12.74854 [97.2566]	HI	1s 2S1/2 4p 2Po3/2	Ly-gamma1 Aki = 6.818x107 s-1 fki = 1.934x10-2
etc		etc	More on Hydrogen Lyman Series