Recombination Lines of Atomic Hydrogen:

Lines of the n-7, n-8, n-9, and n-10 Series


VACUUM VACUUM
TRANSITION WAVELENGTH FREQUENCY I/I(Hbeta)
(Nu-Nl) (microns) (cm -1) Te=Ne=10**4
8-7 19.06 524.61 0.00401
9-7 11.309 884.27 0.00299
10-7 8.760 1141.54 0.00220
series limit 4.468 2238
9-8 27.80 359.7
11-8 12.387 807.29 0.00114
12-8 10.504 952.06 0.000882
13-8 9.392 1064.7
14-8 8.665 1154.1
15-8 8.155 1226.3
16-8 7.780 1285.3
17-8 7.495 1334.2
11-9 22.34 447.62
12-9 16.88 592.39
13-10 22.33 447.8

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