Recombination Lines of Atomic Hydrogen:

Brackett Series


VACUUM VACUUM
TRANSITION WAVELENGTH FREQUENCY I/I(Hbeta)
(Nu-Nl) (microns) (cm -1) Te=Ne=10**4
5-4 4.5225 2467.765 0.0777
6-4 2.6259 3808.25
7-4 2.1661 4616.61 0.0275
8-4 1.9451 5141.14 0.0181
9-4 1.8181 5500.8 0.0126
10-4 1.7367 5758.1 0.00909
11-4 1.6811 5948.45 0.00679
12-4 1.6412 6093.22 0.00521
13-4 1.6114 6205.9 0.00409
14-4 1.5885 6295.3 0.00327
15-4 1.5705 6367.4 0.00266
16-4 1.5561 6426.4 0.00220
17-4 1.5443 6475.3 0.00184
18-4 1.5346 6516.3 0.00156
19-4 1.5265 6551.0 0.00133
20-4 1.5196 6580.7 0.00116
series limit 1.459 6855.

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