Systematic in the relativistic oscillator strengths for fine-structure transitions in the aluminium isoelectronic sequence

Systematic trends in E2 transitions along the sodium isoelectronic sequence

“…Figure 2 refers to the 3 p →6 f transition array. Both figures reflect a feature previously observed for E1 transitions in different isoelectronic sequences such as those of Na 10 and Al 22: The slope of the f vs. 1/ Z curve rises abruptly when relativistic effects begin to have a significant weighting. This change in the slope has also been observed in experimental data and has recently been discussed by Rudzikas 23.…”

Absolute transition probabilities of Al I and Al II spectral lines and intensity ratios within multiplets

“…This effect originates from the influence of all nd series by the 3s3p 2 2 D level, but mainly of the low lying 3d, 4d levels. Theoretical works must also be mentioned in which, employing different approaches, oscillator strengths of 3s 2 3p 2 P−3s 2 3d 2 D; 3s 2 4s 2 S and 3s 2 4s 2 S−3s 2 4p 2 P were calculated (Lavin et al 1997;Ozdemir & Karal 1997). In CI approximation, oscillator strengths of 11 transitions were obtained (Marcinek & Migdalek 1993), including 3s 2 3p…”

Trends in E2 and M1 transition rates between 3p${_{{\mathsf{3/2}}}}$ and 3p${_{\mathsf{{1/2}}}}$ levels in 3s${^{\mathsf{2}}}$ 3p${^k}$ systems

“…Martín et al 1993;Lavín et al 1997;Charro & Martín 1998;Charro et al 1996Charro et al , 1997Charro et al , 2000Charro et al , 2001. The RQDO formalism, as opposed to sophisticated and costly self-consistent-field procedures, is a simple but reliable analytical method based on a model Hamiltonian.…”