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ISOELECTRONIC SYSTEMATIZATION Line Strength Factor:

ISOELECTRONIC SYSTEMATIZATION Line Strength Factor: S if   m i  m f  i | r/ a o | f  2. Deduced from measured data: S if = [  if ( Å) / 1265.38] 3 g i B if /  i (ns). Parametrized: Z 2 S if  S H + b /( Z - C ) ; S H = 3 n 2 ( n 2 -1) g i / 4.

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ISOELECTRONIC SYSTEMATIZATION Line Strength Factor:

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  1. ISOELECTRONIC SYSTEMATIZATION Line Strength Factor: Sifmi mf  i | r/ao | f 2 Deduced from measured data: Sif = [ if (Å) / 1265.38]3giBif/ i (ns) Parametrized: Z 2 SifSH + b/(Z-C) ; SH = 3n2 (n2-1) gi / 4

  2. Dirac Equation calculation

  3. Singlet-Triplet Mixing nsnp levels RES INT

  4. sp 1 and 2 free parameters: Wolfe, PR 41, 443 (1932) (spin-other-orbit) King & VanVleck, PR 56, 464 (1939) (spin dep. radial wave fctn.)

  5. Alkaline-earthlike sequences

  6. Can this be linearized?

  7. Mixing Angles

  8. MCDHF Calculations

  9. 8-1/2 =0.3535

  10.  Radioactive 5670

  11. All applications to here are n = 0 resonance transitions: Alkali-metallike ns – np Alkaline-earthlike ns2 – nsnp Are these data-based semiempirical methods also applicable to other types of transitions? Yes, but there are no data! Lifetime data exist, but branching fraction data are essentially non-existent for multiply charged ions Exceptions:

  12. Differential Lifetime Measurements

  13. 18.786

  14. Determination of branching fractions: Requires intensity calibration of detection apparatus as a function of wavelength Standard lamps: continuum radiation fixed in laboratory beam light Doppler shifted Line standards available in Visible, but not UV Need in-beam ions with known intensity ratios

  15. Si sequence

  16. p2

  17. S II : (Å) 907, 911, 913 1053, 1056 1167, 1173

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