Relativistic calculations on E1 transitions in
As-like ions

Abstract. Relativistic Quantum Defect Orbital (RQDO) calculations have been performed in the LS coupling scheme on electric quadrupole (E2) transitions between levels belonging to several astrophysically important configurations of Ni XVIII. A number of line strengths are reported and compared with the ones found in the literature. A good agreement with the comparative data as well as the expected systematic behaviour of the RQDO line strengths along the spectral series confirms earlier conclusions about the quality of the RQDO wavefunctions.

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“…Martín et al 1993;Martín et al 1994;Charro et al 1996Charro et al , 1997Charro et al , 2000Charro & Martín 1998 and references therein).…”

Section: +mentioning

confidence: 99%

Electric quadrupole transitions in Ni XVIII

Charro

Martı́n

Bielińska-Wąż

2000

Astron. Astrophys. Suppl. Ser.

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“…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.…”

Section: Introductionmentioning

confidence: 99%

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

Charro

López-Ferrero

Martı́n

2003

A&A

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Abstract. The analysis of forbidden lines, such as E2 and M1, in the atomic spectra emitted by certain ions is important for the study of the plasma in astrophysical objects and fusion devices. Transition rates between 3p 3/2 and 3p 1/2 levels in 3s 2 3p k ions that belong to the aluminium sequence have been calculated with the Relativistic Quantum Defect Orbital (RQDO) method. The present data are tested by comparison with other theoretical data available in the literature, and the regularity of the transition intensities along the isoelectronic sequence for both (E2 and M1) lines, as well as their competition, are also analysed.

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“…Martín et al , 1993Martín et al , 1994Martín et al , 1995Martín et al , 2000aCharro & Martín 1998;Charro et al 1997Charro et al , 2000. The RQDO formalism, is a simple but reliable analytical method based on a model Hamiltonian.…”

Section: Introductionmentioning

confidence: 99%