Photoionization of potassiumlike transition-metal ions: Ti<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow /><mml:mrow><mml:mn>3</mml:mn><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>to Fe<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:msup><mml:mrow /><mml:mrow><mml:mn>7</mml:mn><mml:mo>+</mml:mo></mml:mrow></mml:msup></mml:mrow></mml:math>

Sossah, A. M.; Zhou, H. L.; Manson, Steven T.

doi:10.1103/physreva.82.043416

Cited by 8 publications

(12 citation statements)

References 32 publications

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“…T he wave functions T 0 in Eq. [7], w hich is in good agreem ent w ith our calculation and experim ent.…”

Section: (T 7 ||Z ) ||T O )supporting

confidence: 85%

“…T he cross sections contain many resonances due to the 3s23p53dnd and 3s23p53dns Rydberg series. The present BSR calculations and the //-m atrix results o f Sossah et al [7] provide a richer resonance structure than the TO Pbase data. The theoretical positions and num bers o f resonances in the present calculation seem to have im proved agreem ents w ith m easurem ents relative to BPRM calculations at least in term s o f the richness of resonance structures.…”

Section: Resultsmentioning

confidence: 67%

“…T he Fe8+ levels o f the 3s23p43d2 and 3,v3p 54s configurations (levels 18-99 in Table I) theoretical calculations. Systematic calculations of lifetimes for Fe7+ levels were provided in our previous publication [21], and levels with a lifetime greater than 10~5 are listed in Table III 1 1 1 1 1 1 1 1 1 1 1 1 1 j 1 1 1 1 1 1 1 1 1 3p63d 2D3/2 | 1 I I 1 | 1 1 1 1 | 1 1 1 1 | 1 T i V ) -i 1 t I T^ .1 i i i t t i T 1111 1 11111 11111 11 1 1 1 1 1 1 11 1 1 1 1 1 1 1 1 1 1 1111 1 1111| 11111 We com pare the present total photoionization cross sections from the 2Z i> 3 /2 ,5 /2 levels w ith the BPRM results [7] in Fig. 2 [7] obtained w ith the LS //-m atrix approach.…”

Section: Resultsmentioning

confidence: 93%

“…In the photoionization of Ca+, Sc2+, and Ti3+ the 3p 3d excitation energy is above the 3d threshold and giant resonances occur due to the 3s23pb3d 2D~3s23p53d2 2F° transition, which decays through a Super-Coster-Kronig 3s23 p 5 3d2-3 s 23 p b + e transition. The measurements by Gharaibeh et al [6] were performed after the calculations by Sossah et al [7], and no comparison of the measured results was made with the calculations of Sossah et al [7]. The primary objective of our work is to present a comparison of various calculations with experiment and to investigate possible cause of discrepancies.…”

Section: Introductionmentioning

confidence: 98%

“…Theoretical studies of structure and dynamical processes in transition metal atoms and ions with open 3d subshells are both challenging and interesting as discussed by Sossah et al [7], They investigated photoionization of K-like ions (Z = 22-26) using both nonrelativistic and Breit-Pauli /^-matrix methods. They calculated photoionization cross sections from the ground 3s23p63 d 2D3/2 and metastable 3s23pb3 d 2D3/2 states and found substantial changes in the photoionization spectra of K-like ions as 3p 3d excitation moves from the continuum to the bound part of the spectrum for Z ^ 23.…”

Section: Introductionmentioning

confidence: 98%

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Photoionization ofFe7+from the ground and metastable states

Tayal

Zatsarinny

2015

Phys. Rev. A

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The B-spline Breit-Pauli R-matrix method is used to investigate the photoionization of Fe7+ from the ground and metastable states in the energy region from ionization thresholds to 172 eV. The present calculations were designed to resolve the large discrepancies between recent measurements and available theoretical results. The multiconfiguration Hartree-Fock method in connection with B-spline expansions is employed for an accurate representation of the initial-and final-state wave functions. The close-coupling expansion includes 99 finestructure levels of the residual Fe8+ ion in the energy region up to 3s23p54s states. It includes levels of the 3s23p6, 3s23p53d, 3s23p54s, and 3s3p63d configurations and some levels of the 3s23p43d2 configuration which lie in the energy region under investigation. The present photoionization cross sections in the length and velocity formulations exhibit excellent agreement. The present photoionization cross sections agree well with the Breit-Pauli R-matrix calculation by Sossah et al. and the TOPbase data in the magnitude of the background nonresonant cross sections but show somewhat richer resonance structures, which qualitatively agree with the measurements. The calculated cross sections, however, are several times lower than the measured cross sections, depending upon the photon energy. The cross sections for photoionization of metastable states were found to have approximately the same magnitude as the cross sections for photoionization of the ground state, thereby the presence of metastable states in the ion beam may not be the reason for the enhancement of the measured cross sections.

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“…T he wave functions T 0 in Eq. [7], w hich is in good agreem ent w ith our calculation and experim ent.…”

Section: (T 7 ||Z ) ||T O )supporting

confidence: 85%

Section: Resultsmentioning

confidence: 67%

Section: Resultsmentioning

confidence: 93%

Section: Introductionmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 98%

See 3 more Smart Citations

Photoionization ofFe7+from the ground and metastable states

Tayal

Zatsarinny

2015

Phys. Rev. A

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Photoionisation of Ca⁺ions in the valence-energy region 20–56 eV: experiment and theory

Müller

Schippers

Phaneuf

et al. 2017

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

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Abstract. Relative cross sections for the valence shell photoionisation (PI) of 2 S ground level and 2 D metastable Ca + ions were measured with high energy resolution by using the ion-photon merged-beams technique at the Advanced Light Source. Overview measurements were performed with a full width at half maximum bandpass of ∆E = 17 meV, covering the energy range 20 eV -56 eV. Details of the PI spectrum were investigated at energy resolutions reaching the level of ∆E = 3.3 meV. The photon energy scale was calibrated with an uncertainty of ±5 meV. By comparison with previous absolute measurements the present experimental high-resolution data were normalised to an absolute cross-section scale and the fraction of metastable Ca + ions that were present in the parent ion beam was determined to be 18±4%. Large-scale R-matrix calculations using the Dirac Coulomb approximation and employing 594 levels in the close-coupling expansion were performed for the Ca + (3s 2 3p 6 4s 2 S 1/2 ) and Ca + (3s 2 3p 6 3d 2 D 3/2,5/2 ) levels. The experimental data are compared with the results of these calculations and previous theoretical and experimental studies.

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The 3d ² D _5/2−² D _3/2 magnetic dipole transition in potassium-like ions

Qian,

Zhang,

Zhang

et al. 2024

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

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Spectral lines of the magnetic-dipole transition between the 3d 2D3⁄2, 5⁄2 levels of K-like Kr17+, Zr21+, Nb22+, Mo23+, and Ru25+ ions were measured in a compact electron beam ion trap. By means of dedicated calibration methods, the transition wavelengths of Kr17+, Zr21+, and Mo23+ ions reduce uncertainties by at least one order of magnitude and the wavelengths of Nb22+ and Ru25+ ions are measured for the ﬁrst time at a few ppm level. In addition, the ﬁne-structure energy splittings were systematically calculated using the multiconﬁguration Dirac-Hartree-Fock (MCDHF) method combined with the relativistic conﬁguration interaction approach. The contributions of the core-valence and core-core electron correlations, the Breit interaction and QED eﬀect were discussed in detail. The results show that it is essential to include deep core-valence correlation of L-shell and core-core valence correlation of 3p subshell to obtain an agreement better than 0.15% with the existing experimental values. The calculation model can be performed to predict the wavelength within a high accuracy for a wide range of potassium-like ions.

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Photoionization of potassiumlike transition-metal ions: Ti3+to Fe7+

Cited by 8 publications

References 32 publications

Photoionization ofFe7+from the ground and metastable states

Photoionization ofFe7+from the ground and metastable states

Photoionisation of Ca⁺ions in the valence-energy region 20–56 eV: experiment and theory

The 3d ² D _5/2−² D _3/2 magnetic dipole transition in potassium-like ions

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Photoionization of potassiumlike transition-metal ions: Ti3+to Fe7+

Cited by 8 publications

References 32 publications

Photoionization ofFe7+from the ground and metastable states

Photoionization ofFe7+from the ground and metastable states

Photoionisation of Ca+ions in the valence-energy region 20–56 eV: experiment and theory

The 3d 2 D 5/2−2 D 3/2 magnetic dipole transition in potassium-like ions

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Product

Resources

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Photoionisation of Ca⁺ions in the valence-energy region 20–56 eV: experiment and theory

The 3d ² D _5/2−² D _3/2 magnetic dipole transition in potassium-like ions