Multi-configuration Dirac-Fock and relativistic quantum defect orbital study of triplet-triplet transitions in beryllium-like ions

Charro, E.; Martı́n, I.; Lavín, C.

doi:10.1016/0022-4073(96)00039-8

Cited by 18 publications

(17 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Martín et al 1993;Martín et al 1994;Charro et al 1996Charro et al , 1997Charro et al , 2000Charro & Martín 1998), and ions of different degrees of complexity (Biémont et al 1998;Charro et al 1999;Charro & Martín 1999a, 1999b, 2000a, 2000b. The RQDO technique is a simple but reliable analytical method based on a model Hamiltonian.…”

Section: Introductionmentioning

confidence: 99%

Relativistic quantum defect orbital study of forbidden transitions in Co¹⁶⁺

Charro

Martı́n

2001

A&A

Self Cite

View full text Add to dashboard Cite

Abstract. Theoretical line strengths and transition probabilities for electric quadrupole (E2) transitions between levels belonging to several important configurations of Co 16+ are reported. The calculations have been carried out with the Relativistic Quantum Defect Orbital (RQDO) method. A general good accord between the present results and some earlier theoretical data is found. Some of the E2 transition probabilities are reported for the first time. The correct systematic behaviour of the RQDO line strengths along the spectral series is reproduced by the present results in the absence of configuration mixing. This semiempirical method appears to adequately describe E2 transitions in this medium-Z atomic system.

show abstract

Section: Introductionmentioning

confidence: 99%

Relativistic quantum defect orbital study of forbidden transitions in Co¹⁶⁺

Charro

Martı́n

2001

A&A

Self Cite

View full text Add to dashboard Cite

show abstract

“…(in both velocity and length forms) are listed in Table 6. A comparison between the present calculations of oscillator strengths (f L ) and other published data [8,24,26,29,34,41] is presented in Table 4. Most of our calculations of oscillator strengths show a good agreement with the NIST [34] values, but in a few cases the relative differences reach tens of %.…”

Section: +mentioning

confidence: 61%

“…A comparison between the calculated wavelengths and other published experimental and theoretical values [1,2,8,24,26,28,29,34,41] is shown in Table 4. The accuracy of calculated wavelengths (in Å) relative to measurements [24,26,34] can be assessed from Table 4, where the agreement is within <0.2% for all available transitions such as 1-5; 2s 2 ( 1 S 0 )−2s2p( 1 P 1 ) with a calculated wavelength λ = 132.939 Å which deviates from the measurements [24,26,34] by about ±0.0248 Å and from the calculated wavelength of Reference [42] by about ±0.091 Å.…”

Section: Resultsmentioning

confidence: 87%

“…Jian-Hui et al [28] have calculated energy levels, oscillator strengths, transition probabilities and wavelengths of Fe 22+ using the MCDF method with the inclusion of vacuum polarization and Breit interaction. Charro et al [29,30] have calculated some oscillator strengths of Be-like iron up to n = 2, 3 using the relativistic quantum defect orbital (RQDO) method and the MCDF method, but there were no Breit corrections included in the calculations. By using the FAC code Landi and Gu [31] calculated energy levels, oscillator strengths and transition probabilities for 166 fine-structure levels of Fe 22+ belonging to the complexes 1s 2 2lnl , n = 2 − 5, l = s, p, d, f, g.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Ab-Initio Calculations of Level Energies, Oscillator Strengths and Radiative Rates for E1 Transitions in Beryllium-Like Iron

El-Maaref

Schippers

Müller

2015

Atoms

View full text Add to dashboard Cite

In the present work, energy levels, oscillator strengths, radiative rates and wavelengths of Be-like iron (Fe 22+ ) from ab-initio calculations using the multiconfiguration Dirac-Hartree-Fock method are presented. These quantities have been calculated for a set of configurations in the general form 1s 2 nl n l , where n = 2, 3 and n = 2, 3, 4, 5 and l = s, p, d and l = s, p, d, f, g. In addition, excitations of up to four electrons, including core-electron excitations, have been considered to improve the quality of the wave functions. This study comprises an extensive set of E1 transition rates between states with different J.The present results are compared with the available experimental and theoretical data.

show abstract

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

Section: Introductionmentioning

confidence: 99%

Regularities along spectral series in forbidden transitions of Ti$\mathsf{^{11+}}$

Charro

Martı́n

2001

A&A

Self Cite

View full text Add to dashboard Cite

Abstract. Electric quadrupole (E2) transitions of Ti 11+ have been computed with the Relativistic Quantum Defect Orbital (RQDO) method. The correctness of our predictions has been analysed through the inspection of the systematic behaviour of the RQDO line strengths along the spectral series, and by the excellent accord of the SRQDO results with the scarce data available in the literature. Ti 11+ being one of the ions of the iron group, the study of its forbidden lines is of particular interest. The spectrum of this ion is important for the study of plasmas in astrophysical objects and fusion devices.

show abstract

Multi-configuration Dirac-Fock and relativistic quantum defect orbital study of triplet-triplet transitions in beryllium-like ions

Cited by 18 publications

References 47 publications

Relativistic quantum defect orbital study of forbidden transitions in Co¹⁶⁺

Relativistic quantum defect orbital study of forbidden transitions in Co¹⁶⁺

Ab-Initio Calculations of Level Energies, Oscillator Strengths and Radiative Rates for E1 Transitions in Beryllium-Like Iron

Regularities along spectral series in forbidden transitions of Ti$\mathsf{^{11+}}$

Contact Info

Product

Resources

About

Multi-configuration Dirac-Fock and relativistic quantum defect orbital study of triplet-triplet transitions in beryllium-like ions

Cited by 18 publications

References 47 publications

Relativistic quantum defect orbital study of forbidden transitions in Co16+

Relativistic quantum defect orbital study of forbidden transitions in Co16+

Ab-Initio Calculations of Level Energies, Oscillator Strengths and Radiative Rates for E1 Transitions in Beryllium-Like Iron

Regularities along spectral series in forbidden transitions of Ti$\mathsf{^{11+}}$

Contact Info

Product

Resources

About

Relativistic quantum defect orbital study of forbidden transitions in Co¹⁶⁺

Relativistic quantum defect orbital study of forbidden transitions in Co¹⁶⁺