L.A. Vainshtein and U.I. Safronova 1978, ADNDT 21, 49 "Wavelengths and Transition Probabilities of Satellites to Resonance Lines of H- and He-like Ions" Table V He-like ion: Z= 30 lower level upper level lambda(A) Qd(1/s) Ar(1/s) Aa(1/s) Branching-ratio 1s2p 3P 1.0 2p2p 1S .0 1.3273 1.37E+10 2.78E+11 4.88E+13 2.81E-04 1s2s 3S 1.0 2s2p 1P 1.0 1.3315 2.82E+13 3.52E+13 1.90E+14 4.96E-02 1s2p 3P 1.0 2p2p 1D 2.0 1.3326 1.05E+12 1.24E+12 2.10E+14 1.00E-03 1s2p 1P 1.0 2p2p 1S .0 1.3343 4.64E+13 9.41E+14 4.88E+13 9.50E-01 1s2p 3P 2.0 2p2p 1D 2.0 1.3367 2.87E+14 3.39E+14 2.10E+14 2.73E-01 1s2s 1S .0 2s2p 1P 1.0 1.3368 3.89E+14 4.86E+14 1.90E+14 6.83E-01 1s2s 3S 1.0 2s2p 3P 2.0 1.3371 6.64E+13 5.16E+14 1.36E+13 9.74E-01 1s2p 3P 1.0 2p2p 3P 2.0 1.3376 2.47E+14 3.60E+14 1.63E+14 3.02E-01 1s2p 1P 1.0 2p2p 1D 2.0 1.3396 5.86E+14 6.92E+14 2.10E+14 5.57E-01 1s2s 3S 1.0 2s2p 3P 1.0 1.3414 7.02E+13 4.77E+14 2.64E+13 8.87E-01 1s2p 3P 2.0 2p2p 3P 2.0 1.3417 2.96E+14 4.32E+14 1.63E+14 3.63E-01 1s2p 3P 1.0 2p2p 3P .0 1.3419 3.85E+12 8.92E+14 3.93E+12 9.79E-01 1s2s 3S 1.0 2s2p 3P .0 1.3424 1.33E+13 5.10E+14 1.36E+13 9.74E-01 1s2p 1P 1.0 2p2p 3P 2.0 1.3447 1.61E+14 2.35E+14 1.63E+14 1.97E-01 1s2s 1S .0 2s2p 3P 1.0 1.3468 5.06E+12 3.44E+13 2.64E+13 6.39E-02 1s2p 3P 1.0 2s2p 1S .0 1.3483 7.78E+13 1.28E+14 3.09E+14 2.52E-01 1s2p 1P 1.0 2p2p 3P .0 1.3490 6.49E+10 1.50E+13 3.93E+12 1.65E-02 1s2p 1P 1.0 2p2p 1S .0 1.3555 4.28E+13 7.02E+13 3.09E+14 1.38E-01