Triplett energies according to Drake 1988
More exact triplett energies than those given in Alex Markowitz's list can be obtained from the Drake 1988 paper
http://adsabs.harvard.edu/abs/1988CaJPh..66..586D
(Note that the references, as always, matters. Other literature references may result in somewhat different lines. The joys of it ...)
In particular, the important part is Table 3. However, instead of direct line energies, it lists things in a somewhat more complex way and in 1/cm, at least for elements He to Kr, i.e., everything that will ever matter in your normal observed spectrum, namely (with thanks to Natalie):
1. column: y (2 ^3P_1 → 1 ^1S_0 or 1s2p 3P1 → 1s2 1S0) 2. column: w (2 ^1P_1 → 1 ^1S_0 or 1s2p 1P1 → 1s2 1S0) 3. column: not important here 4. column: y-z (2 ^3P_1 → 2 ^3S_1 or 1s2p 3P1 → 1s2s 3S1), i.e., they give upper level y minus upper level z 5. column: x-z (2 ^3P_2 → 2 ^3S_1 or 1s2p 3P2 → 1s2s 3S1)
and to obtain the triplet line energies thus
w: 2. column y: 1. column x: 5. column - 4. column + 1. column [i.e., (x-z)-(y-z)+y] z: 1. column - 4. column [i.e., y-(y-z)]
I've written a small script that reads in the data copied from the Drake table and returns the value - please round yourself according to your needs and taking into account the data accuracy:
This script makes use of this ascii file that you will have to copy and name "drake_table3_cm.dat" - this is just an ascii version of the first 35 lines in Table 3 from the Drake paper.
Author --- Victoria Grinberg 2016-25-03