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= 8


lower level   upper level      lambda(A)  Qd(1/s)   Ar(1/s)   Aa(1/s)  Branching-ratio

1s2p  3P 1.0  2p2p  1S  .0   	  18.889  1.74E+07  2.14E+07  1.55E+13  1.12E-06
1s2s  3S 1.0  2s2p  1P 1.0   	  18.986  4.06E+08  1.37E+08  2.03E+14  6.68E-07
1s2p  1P 1.0  2p2p  1S  .0   	  19.039  2.90E+12  3.57E+12  1.55E+13  1.87E-01
1s2s  1S  .0  2s2p  1P 1.0   	  19.215  7.22E+12  2.44E+12  2.03E+14  1.19E-02
1s2p  3P 1.0  2p2p  1D 2.0   	  19.237  2.64E+07  5.34E+06  3.73E+14  1.41E-08
1s2p  3P 2.0  2p2p  1D 2.0   	  19.240  1.01E+10  2.05E+09  3.73E+14  5.43E-06
1s2s  3S 1.0  2s2p  3P 2.0   	  19.306  9.93E+12  2.32E+12  1.36E+13  1.46E-01
1s2s  3S 1.0  2s2p  3P 1.0   	  19.310  5.96E+12  2.32E+12  1.36E+13  1.45E-01
1s2s  3S 1.0  2s2p  3P  .0   	  19.311  1.98E+12  2.32E+12  1.36E+13  1.46E-01
1s2p  3P 1.0  2p2p  3P 2.0   	  19.337  2.58E+11  1.17E+12  2.16E+11  2.39E-01
1s2p  3P 2.0  2p2p  3P 2.0   	  19.339  7.74E+11  3.50E+12  2.16E+11  7.16E-01
1s2p  3P 1.0  2p2p  3P  .0   	  19.342  1.42E+10  4.66E+12  1.42E+10  9.97E-01
1s2p  1P 1.0  2p2p  1D 2.0   	  19.393  2.32E+13  4.70E+12  3.73E+14  1.24E-02
1s2p  1P 1.0  2p2p  3P 2.0   	  19.494  3.17E+08  1.43E+09  2.16E+11  2.93E-04
1s2p  1P 1.0  2p2p  3P  .0   	  19.499  1.18E+06  3.88E+08  1.42E+10  8.28E-05
1s2s  1S  .0  2s2p  3P 1.0   	  19.547  3.33E+08  1.30E+08  1.36E+13  8.12E-06
1s2p  3P 1.0  2s2p  1S  .0   	  19.609  9.37E+08  9.40E+08  3.46E+14  2.71E-06
1s2p  1P 1.0  2s2p  1S  .0   	  19.770  9.84E+11  9.86E+11  3.46E+14  2.84E-03