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Published in 2020 at "Chemical Physics"
DOI: 10.1016/j.chemphys.2020.110759
Abstract: Abstract The dipole and generalized oscillator strengths (DOS and GOS) of the free and confined atomic system are related to the description of several interesting chemical physical properties, e.g. static polarizability, photoionization, and stopping cross…
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Keywords:
plasma medium;
oscillator strengths;
generalized oscillator;
sodium ... See more keywords
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Published in 2019 at "Journal of Electron Spectroscopy and Related Phenomena"
DOI: 10.1016/j.elspec.2019.146894
Abstract: Abstract Investigations on the energies and radiative properties of the 2p53d 1P1 → 2p61S0 (3C line) and the 2p53d 3D1 → 2p61S0 (3D line) transitions of a highly charged ion embedded in the strong-coupling plasma are made, taking the…
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Keywords:
plasma;
oscillator strengths;
fe16 ion;
energies oscillator ... See more keywords
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Published in 2021 at "Results in physics"
DOI: 10.1016/j.rinp.2021.103960
Abstract: Abstract Energy levels, weighted oscillator strengths and transition probabilities, lifetimes, hyperfine interaction constants, Lande gJ factors and isotope shifts have been calculated for all levels of 1 s 2 and 1 snl ( n =…
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Keywords:
probabilities lifetimes;
weighted oscillator;
energy levels;
interaction ... See more keywords
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1
Published in 2020 at "Journal of Chemical Theory and Computation"
DOI: 10.1021/acs.jctc.0c00707
Abstract: We present an implementation of equation-of-motion oscillator strengths for the multilevel CCSD (MLCCSD) model where CCS is used as the lower level method (CCS/CCSD). In this model, the double excitations of the cluster operator are…
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Keywords:
oscillator strengths;
core;
mlccsd ccsd;
core excitations ... See more keywords
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Published in 2020 at "Journal of chemical theory and computation"
DOI: 10.1021/acs.jctc.0c01111
Abstract: This work presents a series of highly accurate excited-state properties obtained using high-order coupled-cluster (CC) calculations performed with a series of diffuse containing basis sets, and extensive comparisons with experimental values. Indeed, we have computed…
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Keywords:
dipole moments;
excited state;
oscillator strengths;
small molecules ... See more keywords
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Published in 2021 at "Journal of chemical theory and computation"
DOI: 10.1021/acs.jctc.0c01228
Abstract: Using a set of oscillator strengths and excited-state dipole moments of near full configuration interaction quality determined for small compounds, we benchmark the performances of several single-reference wave function methods [CC2, CCSD, CC3, CCSDT, ADC(2),…
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Keywords:
state;
dipole moments;
excited state;
oscillator strengths ... See more keywords
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Published in 2022 at "Journal of Chemical Theory and Computation"
DOI: 10.1021/acs.jctc.2c00164
Abstract: We present an efficient implementation of the equation of motion oscillator strengths for the closed-shell multilevel coupled cluster singles and doubles with perturbative triples method (MLCC3) in the electronic structure program eT. The orbital space…
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Keywords:
equation motion;
oscillator strengths;
multilevel;
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Published in 2020 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/201936620
Abstract: Accurate atomic data is an essential ingredient for the calculation of reliable non-local thermodynamic equilibrium (NLTE) model atmospheres that are mandatory for the spectral analysis of hot stars. We aim to search for and identify…
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Keywords:
times solar;
oscillator strengths;
stellar laboratories;
number ... See more keywords
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Published in 2020 at "Astronomy and Astrophysics"
DOI: 10.1051/0004-6361/202038909
Abstract: Aims. Accurate atomic data for Ti II are essential for abundance analyses in astronomical objects. The aim of this work is to provide accurate and extensive results of oscillator strengths and lifetimes for Ti II. Methods. The…
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Keywords:
agreement;
oscillator strengths;
transition;
investigation oscillator ... See more keywords
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Published in 2022 at "Chinese Physics B"
DOI: 10.1088/1674-1056/ac1f05
Abstract: The scattering matrices of e + N+ with Jπ = 1.5+ in discrete energy regions are calculated using the eigenchannel R-matrix method. We obtain good parameters of multichannel quantum defect theory (MQDT) that vary smoothly…
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Keywords:
spectroscopy;
optical oscillator;
oscillator strengths;
scattering matrices ... See more keywords
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Published in 2017 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stx2159
Abstract: The lifetimes of 17 even-parity levels (3d5s, 3d4d, 3d6s and 4p2) in the region 57 743–77 837 cm−1 of singly ionized scandium (Sc ii) were measured by two-step time-resolved laser induced fluorescence spectroscopy. Oscillator strengths…
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Keywords:
singly ionized;
abundance scandium;
oscillator strengths;
solar abundance ... See more keywords