Combined Coulombic and magnetic contributions to dispersion in 
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Jakubaßa-Amundsen, Doris H.

doi:10.1103/physrevc.105.054303

Cited by 3 publications

(4 citation statements)

References 34 publications

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“…The three-dimensional integrals required for the evaluation of A box f i are carried out numerically as described in [36]. The Coulombic term A c f i is easily handled if the singularity of the electron propagator (2.5) in the polar integral is extracted analytically.…”

Section: Resultsmentioning

confidence: 99%

“…In the earlier work on 12 C [28,36] the second 2 + state at 9.84 MeV and also the lowest isoscalar 3 − state at 9.64 MeV as well as the strong isovector 3 − state at 14.8 MeV. The form factors for the two lower states are plotted in Fig.…”

Section: Comparison With the 12 C Targetmentioning

confidence: 93%

“…Introducing the transition charge density L,ω L and the current densities J Lλ,ω L (with λ = L ± 1 for the electric transitions considered here [33]) as calculated from the SkP HF + RPA and changing to Fourier space in terms of the charge form factor F c L and the transverse electric form factors F te Lλ defined by can be written as [34][35][36] LM,…”

Section: Theorymentioning

confidence: 99%

“…f i , one has μ, ν ∈ {1, 2, 3} for q 1 and q 2 . Explicit expressions for these terms are provided in [36].…”

Section: A Te3mentioning

confidence: 99%

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Dispersion effects in elastic electron scattering from Pb208

Jakubassa-Amundsen,

Roca-Maza

2023

Phys. Rev. C

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Dispersion corrections to elastic electron scattering from 208 Pb at energies up to 150 MeV are estimated within the second-order Born approximation. All strong transient nuclear excited states with angular momentum up to L = 3 and natural parity are taken into consideration. It is found that at small scattering angles the high-lying L = 1 isovector states provide the dominant contribution to the dispersive change of the differential cross section and of the beam-normal spin asymmetry. At the back-most angles these changes are considerably smaller and are basically due to the isoscalar L = 2 and, to a lesser extent, L = 3 states. In comparison with the findings for 12 C, the dispersive cross-section modifications for 208 Pb are significantly larger, while the spin-asymmetry changes are much smaller at all angles. The latter originates from the destructive interference of the multipole contributions in 208 Pb that switch sign when proceeding from L to L + 1. This mechanism might be the origin of the small beam-normal spin asymmetries recently measured in 208 Pb at much larger energies.

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Section: Resultsmentioning

confidence: 99%

Section: Comparison With the 12 C Targetmentioning

confidence: 93%

Section: Theorymentioning

confidence: 99%

“…f i , one has μ, ν ∈ {1, 2, 3} for q 1 and q 2 . Explicit expressions for these terms are provided in [36].…”

Section: A Te3mentioning

confidence: 99%

See 2 more Smart Citations

Dispersion effects in elastic electron scattering from Pb208

Jakubassa-Amundsen,

Roca-Maza

2023

Phys. Rev. C

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Radiative corrections to the beam-normal spin asymmetry in elastic electron scattering from Pb208

Jakubassa-Amundsen

2024

Phys. Rev. C

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Dispersion corrections to elastic electron–nucleus scattering

Jakubaßa-Amundsen¹

2023

Eur. Phys. J. A

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Calculations of the elastic scattering of polarized and unpolarized electrons from spin-zero nuclei within the recoil-modified phase-shift analysis are supplemented with the dispersion correction estimated within the second-order Born approximation. For the $$^{12}$$ 12 C nucleus, three strong transient nuclear excitations are taken into account, for which not only Coulombic, but also magnetic transitions are considered. Dispersion effects of up to 10% in the differential cross section near the first diffraction minimum, resulting largely from Coulombic transitions at the higher collision energies, are in qualitative agreement with experimental findings. Below 300 MeV, dispersion is greatly influenced by magnetic scattering. Investigations of the spin asymmetry for perpendicularly polarized electrons indicate that it is strongly affected by dispersion, predominantly at small scattering angles.

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Combined Coulombic and magnetic contributions to dispersion in e + C12 collisions

Cited by 3 publications

References 34 publications

Dispersion effects in elastic electron scattering from Pb208

Dispersion effects in elastic electron scattering from Pb208

Radiative corrections to the beam-normal spin asymmetry in elastic electron scattering from Pb208

Dispersion corrections to elastic electron–nucleus scattering

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