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Table A.5.

Results for Si IV: Comparison between computed lifetimes, in length (τl) and velocity (τv) gauge, from our calculations.

RCI (a)

Level τl τv τtheor(b) τtheor(c) τobs(d) τobs(e)
3p 2P 1.162E−09 1.159E−09 1.167E−09 1.102E−09 (1.2 ± 0.4)E−09
3p 2P 1.139E−09 1.138E−09 1.141E−09 1.081E−09 (1.2 ± 0.4)E−09
3d 2D3/2 3.923E−10 3.906E−10 3.916E−10 3.790E−10 (4.6 ± 0.5)E−10
3d 2D5/2 3.964E−10 3.949E−10 3.962E−10 3.840E−10 (4.6 ± 0.5)E−10
4s 2S1/2 2.819E−10 2.827E−10 2.821E−10 2.930E−10
4p 2P 9.156E−10 9.150E−10 9.111E−10 9.970E−10 (7.5 ± 0.3)E−10
4p 2P 9.232E−10 9.221E−10 9.199E−10 9.900E−10 (7.5 ± 0.3)E−10
4d 2D3/2 1.808E−09 1.812E−09 1.806E−09 1.824E−09 (2.0 ± 0.2)E−09 (2.1 ± 0.2)E−09
4d 2D5/2 1.811E−09 1.816E−09 1.810E−09 1.846E−09 (2.0 ± 0.2)E−09 (2.1 ± 0.2)E−09
4f 2F 2.638E−10 2.638E−10 2.639E−10 2.620E−10 (4.8 ± 0.4)E−10
4f 2F 2.638E−10 2.638E−10 2.639E−10 2.620E−10 (4.8 ± 0.4)E−10
5s 2S1/2 4.348E−10 4.356E−10 4.322E−10 4.460E−10
5p 2P 1.288E−09 1.283E−09 1.269E−09 1.382E−09 (2.1 ± 0.3)E−09 (2.2 ± 0.2)E−09
5p 2P 1.299E−09 1.293E−09 1.283E−09 1.375E−09 (2.1 ± 0.3)E−09 (2.2 ± 0.2)E−09
5d 2D3/2 3.090E−09 3.100E−09 3.058E−09 3.231E−09
5d 2D5/2 3.068E−09 3.078E−09 3.036E−09 3.256E−09
5f 2F 4.940E−10 4.934E−10 4.926E−10
5f 2F 4.940E−10 4.935E−10 4.927E−10 4.820E−10
5g 2G7/2 9.147E−10 9.154E−10 9.240E−10 (12 ± 2)E−10 (26 ± 3)E−10
5g 2G9/2 9.147E−10 9.154E−10 9.240E−10 (12 ± 2)E−10 (26 ± 3)E−10
6s 2S1/2 7.062E−10 7.058E−10 6.952E−10 7.160E−10
6p 2P 1.957E−09 1.937E−09 1.901E−09 2.063E−09
6p 2P 1.975E−09 1.952E−09 1.921E−09 2.056E−09
6d 2D3/2 4.529E−09 4.488E−09 4.376E−09 4.685E−09
6d 2D5/2 4.482E−09 4.445E−09 4.332E−09 4.712E−09
6f 2F 8.336E−10 8.289E−10 8.274E−10
6f 2F 8.336E−10 8.290E−10 8.274E−10 8.070E−10
6g 2G7/2 1.568E−09 1.569E−09
6g 2G9/2 1.568E−09 1.569E−09 1.569E−09
6h 2H 2.373E−09 2.374E−09 (5.2 ± 0.5)E−09
6h 2H 2.373E−09 2.374E−09 2.376E−09 (5.2 ± 0.5)E−09
7s 2S1/2 1.116E−09 1.110E−09 1.077E−09 1.110E−09
7p 2P 3.010E−09 2.911E−09 2.808E−09 3.040E−09
7p 2P 3.035E−09 2.934E−09 2.837E−09 3.034E−09
7d 2D3/2 6.832E−09 6.366E−09 6.073E−09 6.542E−09
7d 2D5/2 6.732E−09 6.300E−09 6.007E−09 6.553E−09
7f 2F 1.325E−09 1.294E−09 1.289E−09
7f 2F 1.325E−09 1.294E−09 1.289E−09 1.261E−09
7g 2G7/2 2.473E−09 2.469E−09
7g 2G9/2 2.473E−09 2.470E−09 2.454E−09
7h 2H 3.751E−09 3.752E−09
7h 2H 3.751E−09 3.753E−09 3.750E−09
7i 2I11/2 5.270E−09 5.272E−09
7i 2I13/2 5.270E−09 5.272E−09 5.267E−09

Notes. The present values from the RCI calculations are compared to the predicted lifetimes from other calculations (b),(c) (τtheor), as well as experimental results , with stated uncertainties. All values are given in seconds.



Present calculations;

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