Scattering of e∓ from ytterbium atoms

Shorifuddoza, M.; Patoary, M. Atiqur R.; Jakubaßa-Amundsen, Doris H.; Haque, A. K. F.; Uddin, Md. Azhar

doi:10.1140/epjd/e2019-100130-8

Cited by 13 publications

(5 citation statements)

References 51 publications

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“…More precisely, S shows sharp positive and negative excursions in the vicinity of a critical point. [ 30 ] In our calculations, as evident from Figure 7, near the critical point [ E c = 28.9 eV, θ c = 76.5°], S attains its positive extrema +0.9992 at [28.05 eV, 76.0°] and negative extrema −0.9699 at [30.37 eV, 77.5°].…”

Section: Resultssupporting

confidence: 50%

“…We have tabulated these eight deepest minima in Table 1 with their respective critical energy E c and critical angle θ c . In order to qualify a minimum to be a CM, it must satisfy the criterion ∣ g ( θ ) ∣ > ∣ f ( θ )∣ as in References [28–31]. In the present work, all of the deepest minima are qualified as CM as they have satisfied the condition, as evident in Table 1.…”

Section: Resultsmentioning

confidence: 97%

“…The spin polarization is very sensitive to the choice of the potential, as well as to the scattering dynamics. [ 30 ] Both the present work and the work of Fink and Ingram [ 18 ] have been carried out using Dirac's relativistic dynamics, but the latter did not include the exchange, polarization, and absorption potentials as mentioned earlier. Furthermore, they have used the HFS atomic potential in their calculation.…”

Section: Resultsmentioning

confidence: 99%

“…[ 27 ] This method produced reasonable results for determining CM, maximum spin polarization (MSP) and cross sections for elastic differential scattering, and integral cross sections (elastic, total, momentum transfer) for a number of targets. [ 28–31 ] Testing of this procedure for Cu, an open‐shell atom, would provide not only production data for applications but also serve as a test case of the effectiveness of the present method for an open‐shell atom.…”

Section: Introductionmentioning

confidence: 99%

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Angular distributions and critical minima in the elastic scattering of electrons by atomic copper

Shorifuddoza

Das

Kabir

et al. 2020

Int J of Quantum Chemistry

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Dirac relativistic partial wave analysis has been employed to analyze the angular distributions and critical minima, along with maximum spin polarization, for the elastic scattering of electrons from copper atoms over the energy range of 1 to 2000 eV. Integrated elastic, inelastic, total, and momentum transfer cross sections have also been calculated. This work uses a complex electron‐atom optical potential that includes static, exchange, correlation‐polarization, and absorption potentials. Comparison of our calculations with the available experimental data and other theoretical calculations shows satisfactory agreement. As far as we are concerned, critical minima and corresponding maximum spin polarization points have not yet been reported in the literature.

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Section: Resultssupporting

confidence: 50%

Section: Resultsmentioning

confidence: 97%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Angular distributions and critical minima in the elastic scattering of electrons by atomic copper

Shorifuddoza

Das

Kabir

et al. 2020

Int J of Quantum Chemistry

Self Cite

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“…This value for the nuclear skin thickness is less than the typical value of t = 2.3 fm assumed for most nuclei [89]; however, it is the only value found for Yb which includes an uncertainty. Other authors have used t = 2.3 fm [77] or t = 2.4 fm [91]. The dependence of the results upon the skin thickness was investigated and found to be insignificant.…”

Section: Appendix A: Nuclear Modelmentioning

confidence: 99%

Isotope shifts for ${}^1S_0-{}^3P_{0,1}^o$ Yb lines from multi-configuration Dirac-Hartree-Fock calculations

Schelfhout,

McFerran

2021

Preprint

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Relativistic multiconfiguration Dirac-Hartree-Fock calculations with configuration interaction are carried out for the 1 S0 and 3 P o 0,1 states in neutral ytterbium by use of the available grasp2018 package. From the resultant atomic state functions and the ris4 extension, we evaluate the mass and field shift parameters for the 1 S0 − 3 P0 (clock) and 1 S0 − 3 P o 1 (intercombination) lines. We present improved estimates of the nuclear charge parameters, λ A,A , and differences in mean-square charge radii, δ r 2 A,A , and examine the second-order hyperfine interaction for the 3 P o 0,1 states. Isotope shifts for the clock transition have been estimated by three independent means from which we predict the unknown clock line frequencies in bosonic Yb isotopes. Knowledge of these line frequencies has implications for King plot nonlinearity tests and the search for beyond Standard-Model signatures.

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