Hyperfine constants, revised wavelengths and energy levels in In<scp>I</scp>and In<scp>II</scp>derived by Fourier transform spectroscopy

Karlsson, Hans; Litzén, Ulf

doi:10.1088/0953-4075/34/22/315

Cited by 15 publications

(56 citation statements)

References 23 publications

(28 reference statements)

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“…All levels except 5p 2 1 S 0 are a few hundred cm −1 too high relative to the ground level indicating that less correlation has been captured for the latter. In table 2 calculated hyperfine structure constants from the CI wavefunctions including spin-polarization are compared with experimental values of Karlsson and Litzén derived from Fourier transform spectra [1]. The calculated and experimentally determined A factors are in very good agreement.…”

Section: Spectrum Propertiesmentioning

confidence: 78%

Spectral properties of In II from MCDHF calculations

Jönsson¹,

Andersson²

2007

J. Phys. B: At. Mol. Opt. Phys.

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We report extensive relativistic multiconfiguration Dirac-Hartree-Fock calculations of oscillator strengths and hyperfine structures for a large number of electric dipole transitions in In II. Results for the 5s 2 1 S 0 -5s5p 3 P o 0 hyperfine induced transition are also presented. Core polarization is accounted for by means of explicit CI. To describe spin-polarization effects configuration state functions obtained by single excitations from all core-shells are included in the expansions. The computed oscillator strength for the 5s 2 1 S 0 -5s5p 3 P o 1 intercombination transition is in good agreement with laser spectroscopy measurements of In + ions in a radio-frequency trap. The calculated magnetic dipole hyperfine interaction constants agree very well with experimental constants derived from Fourier transform spectra. The problem with offdiagonal interactions affecting the hyperfine structures in closely spaced finestructure levels is discussed.

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Section: Spectrum Propertiesmentioning

confidence: 78%

Spectral properties of In II from MCDHF calculations

Jönsson¹,

Andersson²

2007

J. Phys. B: At. Mol. Opt. Phys.

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“…The predicted function, a sum of Gaussians, was based on the following assumptions (as given in Karlsson & Litzén 2001): 1. Each hfs component has a Doppler profile.…”

Section: Analysis Of the Hyperfine Structurementioning

confidence: 99%

The laboratory analysis of $\ion{Bi}{II}$ and its application to the Bi-rich HgMn star HR 7775

Dolk

Litzén

Wahlgren

2002

A&A

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Abstract. The bismuth spectrum emitted from a hollow cathode discharge has been recorded with a Fourier Transform Spectrometer (FTS). Accurate wavelengths have been determined for 104 Bi ii lines, and several new energy levels have been found, while the accuracy of previously known Bi ii level energies have been improved. The hyperfine structure of all observed Bi ii lines has been analyzed, yielding hyperfine constants A and B for 56 Bi ii levels. With the aid of the laboratory measurements the optical region spectrum of the HgMn star HR 7775 has been studied for all observable Bi ii lines. The wavelengths and hfs constants established from the laboratory work have been combined with theoretical gf values to identify spectral lines and make an abundance estimation of bismuth. It has been established that bismuth is present in HR 7775 at an enhancement level of approximately 5 orders of magnitude relative to the meteoritic abundance, consistent with previous observations in the ultraviolet region of this star. Astrophysical gf values are presented for a number of Bi ii lines.

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“…From the resonance frequencies, values for the hyperfine structure of the 5s 2 6s level in In 115 and In 113 were derived by Neijzen and Dönszelmann in [15]. The spin-forbidden 5s 2 5p 2 P -5s5p 2 4 P In 115 transition was analyzed and absolute wavelengths, hyperfine constants A and B, as well as improved energy level values were reported by Karlsson and Litzén in [16].…”

Section: Introductionmentioning

confidence: 99%

Relativistic all-order calculations ofInIandSnIIatomic properties

Safronova

Kozlov

2007

Phys. Rev. A

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We use all-order relativistic many-body perturbation theory to study 5s 2 nl configurations of In I and Sn II. Energies, E1-amplitudes, and hyperfine constants are calculated using all-order method, which accounts for single and double excitations of the Dirac-Fock wave functions. A comprehensive review of experimental and theoretical studies of In I and Sn II properties is given. Our results are compared with other studies were available.

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Hyperfine constants, revised wavelengths and energy levels in InIand InIIderived by Fourier transform spectroscopy

Cited by 15 publications

References 23 publications

Spectral properties of In II from MCDHF calculations

Spectral properties of In II from MCDHF calculations

The laboratory analysis of $\ion{Bi}{II}$ and its application to the Bi-rich HgMn star HR 7775

Relativistic all-order calculations ofInIandSnIIatomic properties

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