Recombination Lines of Atomic Hydrogen:

Pfund Series


VACUUM VACUUM
TRANSITION WAVELENGTH FREQUENCY I/I(Hbeta)
(Nu-Nl) (microns) (cm -1) Te=Ne=10**4
6-5 7.4599 1340.5
7-5 4.6538 2148.79 0.0158
8-5 3.7405 2673.43 0.0104
9-5 3.2970 3033.06 0.00725
10-5 3.0392 3295.30 0.00524
11-52.8730 3480.68 0.00391
15-5 2.5643 3899.65 0.00152
16-5 2.5261 3958.670.00125
17-5 2.4953 4007.60 0.00104
18-5 2.4700 4048.59 0.000877
19-5 2.4490 4083.29 0.000747
20-5 2.4314 4083.29 0.000643
21-5 2.4164 4138.40 0.000558
22-5 2.4035 4160.50 0.000489
23-5 2.3925 4179.77 0.000431
24-5 2.3828 4196.69 0.000383
25-52.3744 4211.62 0.000343
series limit 2.279 4387.

Intensities from Hummer & Storey, MNRAS 224, 801
most frequencies calculated from f = 109677.57 * [(1/Nl)**2] - TRG