Extended analysis of the system of even configurations of Ta II

Stachowska, Ewa; Dembczyński, J.; Windholz, Laurentius; Ruczkowski, J.; Elantkowska, M.

doi:10.1016/j.adt.2016.06.001

Cited by 6 publications

(4 citation statements)

References 27 publications

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“…[25]-by Stachowska et al [28] performing a semi-empirical analysis, which confirmed also the new high lying levels above 72,000 cm −1 (Figure 4). For this analysis, an important point was to exclude energy levels given in literature but in reality not existing.…”

Section: Figuresupporting

confidence: 70%

The Role of the Hyperfine Structure for the Determination of Improved Level Energies of Ta II, Pr II and La II

Windholz

2017

Atoms

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For the determination of improved energy levels of ionic spectra of elements with large values of nuclear magnetic dipole moment (and eventually large values of nuclear quadrupole moments), it is necessary to determine the center of gravity of spectral lines from resolved hyperfine structure patterns appearing in highly resolved spectra. This is demonstrated on spectral lines of Ta II, Pr II and La II. Blend situations (different transitions with accidentally nearly the same wave number difference between the combining levels) must also be considered.

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Section: Figuresupporting

confidence: 70%

The Role of the Hyperfine Structure for the Determination of Improved Level Energies of Ta II, Pr II and La II

Windholz

2017

Atoms

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“…The other details of the whole procedure used here are described also in Refs. [24][25][26]. The fs least squares fitting procedure has been carried out over 276 energy levels attributed to this extended model.…”

Section: Even-parity Configurationsmentioning

confidence: 99%

Second spectrum of Chromium (Cr II) Part I: New energy level reanalysis

Bouazza

Quinet

Palmeri

2018

Atomic Data and Nuclear Data Tables

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Using a linked-parametric technique of level-fitting calculations in a multiconfiguration basis, a parametric fine structure (fs) analysis for both even and odd parities of Cr II was achieved. For the first time the fs parameter, magnetic Landé g-factor and the percentage of leading eigenvector values for more than one thousand levels are determined and given for these two sets. This study has led us to confirm in the whole the well founded basis of NIST team works but inevitably also to exchange assignments of some levels classified in earlier lists of energy levels and to shift positions of some quartets like 4 F J for instance. Furthermore we take this opportunity to add our predicted doublet, quartet and sextet locations for missing experimental levels up to 124,000 cm −1 .

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“…The spin−orbit coupling which mediates the spin-crossing, also leads to coupling between the quintet and triplet atomic states. 37 Stachowka et al found that the ground state has only about 5−10% triplet mixed character (J = 1−4 about 5% and 10% for J = 5). Unfortunately, a full ab initio treatment for the whole potential energy landscape, including all relevant electronic states, is beyond the scope of the present study.…”

mentioning

confidence: 99%

“…The spin–orbit coupling which mediates the spin-crossing, also leads to coupling between the quintet and triplet atomic states . Stachowka et al found that the ground state has only about 5–10% triplet mixed character ( J = 1–4 about 5% and 10% for J = 5).…”

mentioning

confidence: 99%

Dynamics of the Oxygen Atom Transfer Reaction between Carbon Dioxide and the Tantalum Cation

Meta¹,

Huber²,

Michaelsen

et al. 2023

J. Phys. Chem. Lett.

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The understanding of fundamental atomic-level processes often requires well-defined model systems. The oxygen atom transfer from CO2 to a transition metal cation in the gas phase presents such a model system. We investigate the reaction of Ta+ + CO2 for which the formation of TaO+ is highly efficient and attributed to multistate reactivity. Here, we study the atomistic dynamics of the oxygen atom transfer reaction by recording experimental energy and angle differential cross sections by crossed beam velocity map imaging supported by ab initio quantum chemical calculations. Product ion velocity distributions are dominated by signatures for indirect dynamics, despite the reaction being highly exothermic. Product kinetic energy distributions show little dependence on additional collision energy even with only four atoms involved, which hints at dynamical trapping behind a submerged barrier.

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Extended analysis of the system of even configurations of Ta II

Cited by 6 publications

References 27 publications

The Role of the Hyperfine Structure for the Determination of Improved Level Energies of Ta II, Pr II and La II

The Role of the Hyperfine Structure for the Determination of Improved Level Energies of Ta II, Pr II and La II

Second spectrum of Chromium (Cr II) Part I: New energy level reanalysis

Dynamics of the Oxygen Atom Transfer Reaction between Carbon Dioxide and the Tantalum Cation

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