Photoionization of Be-like N3 +and Ne6 +ions: features of Be isoelectronic sequences ofZ⩽ 10

Kim, Dae-Soung; Kwon, Duck-Hee

doi:10.1088/0953-4075/45/18/185201

Cited by 7 publications

(11 citation statements)

References 29 publications

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“…• and 2pnd 1 P • Rydberg series of O 4+ (n = 6-10) [22], F 5+ (n = 6-10) [21] and Ne 6+ (n = 7-9) ions [23]. In this paper, we intend to present accurate resonance energies and widths of the 2pns 1 P…”

Section: Introductionmentioning

confidence: 99%

Energy resonances and widths of the (2pns) ¹P° and (2pnd) ¹P° Rydberg series of Be-like ions

et al. 2013

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We report accurate photoionization calculations of resonance energies and widths of the 2pns 1P° and 2pnd 1P° Rydberg series (n = 4–25) of the Be-like ions (Z = 8–18). Calculations are performed using the screening constant by unit nuclear charge (SCUNC) method. The results are analyzed in the framework of the standard quantum defect theory, as well as of the SCUNC-procedure, by evaluating the effective nuclear charge. The results for Na7+ to Ar14+ ions are believed to be the first theoretical data. Those for O4+, F5+ and Ne6+ ions compare well with the available theoretical results. The new data obtained may provide useful guidelines for future photoionization studies on Be-like ions with Z = 11–18.

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Section: Introductionmentioning

confidence: 99%

Energy resonances and widths of the (2pns) ¹P° and (2pnd) ¹P° Rydberg series of Be-like ions

et al. 2013

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“…To understand the evolution of resonances according to the nuclear charge, further calculations for photo ionization cross section of Mg-isoelectronic phosphorus(P) and analysis of resonance structures for the Mg-isoelectronic sequences, comparing our results for the Be-like sequences [49], will be performed.…”

Section: Discussionmentioning

confidence: 99%

Theoretical photoionization spectra for Mg-isoelectronic Cl⁵⁺and Ar⁶⁺ions

Kim¹,

Kwon²

2015

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

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Autoionizing resonant structures of Mg-isoelectronic Cl5+ and Ar6+ ions for the removal of a 3s or 3p electron from initial and states have been studied using the eigenchannel R-matrix approach connected with multichannel quantum-defect theory (MQDT) at the R-matrix boundary. The resonant states are verified and analyzed using eigenphase gradients to get resonance locations Er, effective quantum numbers n*, and widths . It is noted that there are no former theoretical and experimental studies for photoionization cross sections of Mg-isoelectronic Cl5+ to compare with ours. For the Mg-isoelectronic Ar6+ ion, our calculated ionization thresholds are in good agreement with NIST data and Opacity Project (OP) results. The current photoionization cross sections for the Mg-isoelectronic Ar6+ ion are in general agreement with the OP results, except for resonance energy shifts and structures of a few resonances.

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“…[7][8][9][10] These studies have shown that, except for the resonances converging to the C 3+ 2p threshold, all the resonance series are perturbed by overlapping series converging to other thresholds. The beryllium isoelectronic sequence of ions is particularly interesting because of the effect of electron correlation effects due to the presence of near-degenerate doubly excited configurations in the ground configuration.…”

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confidence: 98%

Static and dynamic polarizability for C2+ in Rydberg states

Stǎncǎlie

2015

AIP Advances

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This work presents results from a non-perturbative calculation of dynamic polarizability of C III ions in 1s 2 2sns ( 1 S e ) Rydberg states. We employ a two-state model for dressed atomic states to investigate the effect of the frequency-dependent polarizability of optically dressed 1s 2 2sns( 1 S e ) states (n = 5 − 12) on transitions to nearby states (1s 2 2pns( 1 P 1 o )). Our model calculation results indicate that the resonance structure of the polarizabilities is entirely captured by the transition terms whereas the free electron polarizability only provides a smooth background. The resonance structure is evident in the plots and the widths increase with increasing principal quantum number. This work refers to highly excited 1s 2 2sns ( 1 S) Rydberg states, embedded in the electric dipole field of the 2s -2p core transition in Li-like C 3+ ion. The contributions of the individual transitions to the static polarizabilities of these Rydberg states are obtained from the use of the sum-over-state method. To this aim, both the C 2+ ground state and the C 3+ target state energies have been carefully calculated based on the configuration interactions method implemented in the General-purpose Relativistic Atomic Structure Package. Agreement is reasonably good with existing data wherever available. These results are believed to be the first such values for this system and will be important for ionic spectroscopy and plasma diagnostics. C 2015 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License.

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Photoionization of Be-like N^{3 +}and Ne^{6 +}ions: features of Be isoelectronic sequences ofZ⩽ 10

Cited by 7 publications

References 29 publications

Energy resonances and widths of the (2pns) ¹P° and (2pnd) ¹P° Rydberg series of Be-like ions

Energy resonances and widths of the (2pns) ¹P° and (2pnd) ¹P° Rydberg series of Be-like ions

Theoretical photoionization spectra for Mg-isoelectronic Cl⁵⁺and Ar⁶⁺ions

Static and dynamic polarizability for C2+ in Rydberg states

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Photoionization of Be-like N3 +and Ne6 +ions: features of Be isoelectronic sequences ofZ⩽ 10

Cited by 7 publications

References 29 publications

Energy resonances and widths of the (2pns) 1P° and (2pnd) 1P° Rydberg series of Be-like ions

Energy resonances and widths of the (2pns) 1P° and (2pnd) 1P° Rydberg series of Be-like ions

Theoretical photoionization spectra for Mg-isoelectronic Cl5+and Ar6+ions

Static and dynamic polarizability for C2+ in Rydberg states

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Product

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Photoionization of Be-like N^{3 +}and Ne^{6 +}ions: features of Be isoelectronic sequences ofZ⩽ 10

Energy resonances and widths of the (2pns) ¹P° and (2pnd) ¹P° Rydberg series of Be-like ions

Energy resonances and widths of the (2pns) ¹P° and (2pnd) ¹P° Rydberg series of Be-like ions

Theoretical photoionization spectra for Mg-isoelectronic Cl⁵⁺and Ar⁶⁺ions