Effects of velocity-dependent and spin-orbit terms of the Skyrme interaction on neutron elastic scattering observables

Tung, Nguyen Xuan; Tam, D. Quang; Pham, Vinh N. T.; Truong, Chi Lam; Hao, T. V. Nhan

doi:10.1103/physrevc.102.034608

Cited by 5 publications

(4 citation statements)

References 31 publications

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“…( 8 ) controls its impact on the related nuclear properties and interactions. For instance, it was indicated that the two-body spin–orbit contribution of the NN interaction slightly increase the absorption part of the optical potential in the interior region, affecting the angular distribution and analysing power of neutron elastic scattering by doubly closed-shell nuclei 34 . Figure 6 displays the dependence of the density distribution on W 0 .…”

Section: Resultsmentioning

confidence: 99%

Impact of different components of the Skyrme nucleon–nucleon effective interaction on the nuclear density distribution

Seif,

Hashem

2023

Sci Rep

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We systematically investigate the impact of the different terms of the Skyrme energy density functional of the effective nucleon-nucleon interaction, and of its associated nuclear matter (NM) properties, on the density distributions of spherical nuclei. Twenty five Skyrme force parameterizations are examined simultaneously, covering a broad range of each characteristic parameter and NM property. The diffuseness and the neutron-skin thickness are found to be the most sensitive density quantities to the force parameterization. The diffuseness is indicated to decrease with increasing the central zero-range and the effective mass terms of the effective force, and the power σ of its density dependent term, as well as with the coefficient of the NM symmetry energy (asym) and its density slope (L) at saturation density, and the incompressibility (Ko). In contrast, the proton and neutron diffuseness tend to increase with increasing the spin–orbit force and the isoscalar effective nucleon-mass (m*), and to increases slightly with the density dependence parameters other than the power σ. Opposite impacts are pointed out for the different parts of the finite-range, and J2 tensor terms on the proton and neutron density. While the neutron-skin thickness tends to increase significantly upon increasing the central zero-range and spin–orbit force terms, asym, L, and Ko, and to increase slightly with the finite-range and J2 tensor terms, and σ, it decreases with the effective-mass term, the density-dependence exchange parameter, and with the indicated isoscalar effective mass. The proton and neutron radii exhibit decreasing behavior with the central zero-range and the spin–orbit terms, and with Ko, and m*. Increasing asym and L indicate slightly less (larger) proton (neutron) radius.

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Section: Resultsmentioning

confidence: 99%

Impact of different components of the Skyrme nucleon–nucleon effective interaction on the nuclear density distribution

Seif,

Hashem

2023

Sci Rep

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“…The NSM has been used as well to determine α-nucleus potentials [198][199][200]. In the last decade, there has been a renewed interest in the NSM with Skyrme [201][202][203] and Gogny interactions [204][205][206]. The NSM describes with relative success, for both neutron and proton projectiles, the scattering off target nuclei such as: 16 O [203,207,208], 40 Ca [193,195,203,204,206], 48 Ca [203,206] and 208 Pb [203,208], for incident energy below 50 MeV.…”

Section: Microscopic Approachesmentioning

confidence: 99%

“…In the last decade, there has been a renewed interest in the NSM with Skyrme [201][202][203] and Gogny interactions [204][205][206]. The NSM describes with relative success, for both neutron and proton projectiles, the scattering off target nuclei such as: 16 O [203,207,208], 40 Ca [193,195,203,204,206], 48 Ca [203,206] and 208 Pb [203,208], for incident energy below 50 MeV. A calculation fully handling continuum and selfconsistency has been proposed with Skyrme interactions [207].…”

Section: Microscopic Approachesmentioning

confidence: 99%

Optical potentials for the rare-isotope beam era

Hebborn

Nunes

Potel

et al. 2023

J. Phys. G: Nucl. Part. Phys.

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We review recent progress and motivate the need for further developments in nuclear optical potentials that are widely used in the theoretical analysis of nucleon elastic scattering and reaction cross sections. In regions of the nuclear chart away from stability, which represent a frontier in nuclear science over the coming decade and which will be probed at new rare-isotope beam facilities worldwide, there is a targeted need to quantify and reduce theoretical reaction model uncertainties, especially with respect to nuclear optical potentials. We first describe the primary physics motivations for an improved description of nuclear reactions involving short-lived isotopes, focusing on its benefits for fundamental science discoveries and applications to medicine, energy, and security. We then outline the various methods in use today to build optical potentials starting from phenomenological, microscopic, and ab initio methods, highlighting in particular the strengths and weaknesses of each approach. We then discuss publicly-available tools and resources facilitating the propagation of recent progresses in the field to practitioners. Finally, we provide a set of open challenges and recommendations for the field to advance the fundamental science goals of nuclear reaction studies in the rare-isotope beam era.

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“…The self-energy is nonlocal, energy-dependent, complex, and separated. [20]. We assume to evaluate the sensitivity of the angular distributions and analysing powers on each parameter of the Skyrme interactions in the near future.…”

Section: Introductionmentioning

confidence: 99%

Progress in the microscopic description of nucleon-nucleus elastic scattering at low-energy

Hao

Tam

2021

hueuni-jns

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Effects of velocity-dependent and spin-orbit terms of the Skyrme interaction on neutron elastic scattering observables

Cited by 5 publications

References 31 publications

Impact of different components of the Skyrme nucleon–nucleon effective interaction on the nuclear density distribution

Impact of different components of the Skyrme nucleon–nucleon effective interaction on the nuclear density distribution

Optical potentials for the rare-isotope beam era

Progress in the microscopic description of nucleon-nucleus elastic scattering at low-energy

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