The NIST compilation of ionization potentials revisited (I): From He-like to Xe-like ions

Gil, Gabriel; Gonzalez, Augusto

doi:10.1139/cjp-2016-0512

Cited by 7 publications

(2 citation statements)

References 26 publications

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“…Компиляция энергий ионизации NIST от He-до Xeподобных ионов была пересмотрена в работах [24,25]. В предварительных работах [26,27] было показано, что данные NIST для IE атомарных ионов [23], а также корреляционные энергии атомарных ионов могут быть размещены на одной универсальной кривой.…”

Section: Introductionunclassified

Энергии ионизации Cu-подобных ионов с Z≤92

Иванова¹,

Панфилов²

2023

Оптика И Спектроскопия

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The overview of the experimental and theoretical data on the ionization energies (IE) of the Cu -like ions is presented. In various works data are obtained by interpolation and extrapolation the parameters of model potentials for Dirac equations. In other approaches, the function of the dependence of the ionization energy on Z (Z is nuclear charge) is approximated by a polynomial with power-law dependence on Z in order to achieve a minimum difference between theoretical and experimental data. The compilation of ionization energies is in database of the National Institute of Standards and Technology (USA), where the typical uncertainty is several units in the fourth significant digit. This means that for heavy ions the error can reach several tens of thousands cm–1. In this work, the ionization energies of Cu-like ions are refined to achieve accuracy to the fifth significant digit. Two methods have been developed for the interpolation and extrapolation. Scaling ionization energies along Z: scaling results in the function of the dependence of ionization energies on Z to the form of a quasi-line, i.e., weakly varying function on interval of 10−15 Z values. This allows the function to be interpolated up to the fifth significant numbers. The scaled refined function of the dependence of the ionization energy on Z is approximated by analytical functions that allow extrapolation with good accuracy to the Z~92 region. The relativistic model potential is used to interpolate and extrapolate ionization energies. The parameter of the relativistic model potential for the 4s1/2 orbital turned out to be almost linear function of Z for Z > 70, which made it possible to extrapolate with high accuracy to the Z region of 92. The results of both methods are in good agreement up to Z~ 92.

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Section: Introductionunclassified

Энергии ионизации Cu-подобных ионов с Z≤92

Иванова¹,

Панфилов²

2023

Оптика И Спектроскопия

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“…In the present paper, we construct an analytical expression for the ionization energy of atomic ions, which is to be used in order to detect problematic values 4,5 in the numbers provided by the NIST database. 6 Our expression is a regularized perturbative series (RPS), previously employed in other contexts 7 .…”

Section: Introductionmentioning

confidence: 99%

Regularized perturbative series for the ionization potential of atomic ions

Gil

Gonzalez

2017

Can. J. Phys.

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We study N -electron atoms with nuclear charge Z. It is well known that, in the cationic (Z > N ) high-Z region, the atom behaves as a weakly interacting system. The anionic (Z < N ) regime, on the other hand, is characterized by an instability threshold at Zc N − 1, below which the atom spontaneously emits an electron. We construct a regularized perturbative series (RPS) for the ionization potential of ions in an isoelectronic sequence that exactly reproduces both, the large Z and the Z near Zc limits. The large-Z expansion coefficients are analytically computed from perturbation theory, whereas the slope of the energy curve at Z = N − 1 is computed from a kind of zero-range forces theory that uses as input the electron affinity and the covalent radius of the neutral atom with N −1 electrons. Relativistic effects, at the level of first-order perturbation theory, are considered. Our RPS formula is to be used in order to check the consistency of the ionization potential values for atomic ions contained in the NIST database.

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Energy levels, transition data and collisional excitation cross-section of Sn3+ and Sn4+ ions

Singh

Goyal

2020

Journal of Electron Spectroscopy and Related Phenomena

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The NIST compilation of ionization potentials revisited (I): From He-like to Xe-like ions

Abstract: Appendix B: Second row elements 1. The Be-like sequence (N = 4) RPT coefficients: a 2 = 0.125 + 0.0390625 (Z/137.036) 2 ,

Cited by 7 publications

References 26 publications

Энергии ионизации Cu-подобных ионов с Z≤92

Энергии ионизации Cu-подобных ионов с Z≤92

Regularized perturbative series for the ionization potential of atomic ions

Energy levels, transition data and collisional excitation cross-section of Sn3+ and Sn4+ ions

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The NIST compilation of ionization potentials revisited (I): From He-like to Xe-like ions

Abstract: Appendix B: Second row elements 1. The Be-like sequence (N = 4) RPT coefficients: a 2 = 0.125 + 0.0390625 (Z/137.036) 2 ,

Cited by 7 publications

References 26 publications

Энергии ионизации Cu-подобных ионов с Z&le;92

Энергии ионизации Cu-подобных ионов с Z&le;92

Regularized perturbative series for the ionization potential of atomic ions

Energy levels, transition data and collisional excitation cross-section of Sn3+ and Sn4+ ions

Contact Info

Product

Resources

About

Энергии ионизации Cu-подобных ионов с Z≤92

Энергии ионизации Cu-подобных ионов с Z≤92