Statybinė medžiagotyra

Deltuva, Juozas; Rudžionis, Žymantas; Vaitkevičius, Vitoldas; Vaičiukynienė, Danutė

doi:10.5755/e01.9786090213476

Cited by 10 publications

(15 citation statements)

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“…[1] suggested that the Weinberg state expansion, the basis of ADWA, should be revisited in the presence of nonlocality. The present work, being an extended version of the pioneering study [2], goes well beyond the suggestion of Ref. [1].…”

Section: Introductionmentioning

confidence: 59%

Weak sensitivity of three-body ( d,p ) reactions to np force models

Deltuva

2018

Phys. Rev. C

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Background: Adiabatic distorted-wave approximation (ADWA) study of three-body (d, p) transfer reactions [G.W. Bailey, N.K. Timofeyuk, and J.A. Tostevin, Phys. Rev. Lett. 117, 162502 (2016)] reported strong sensitivity of cross sections to the neutron-proton (np) interaction model when the nucleon-nucleus optical potential is nonlocal.Purpose: The verification of this unusual finding using more reliable methods is aimed for in the present work.Methods: A rigorous Faddeev-type three-body scattering theory is applied to the study of (d, p) transfer reactions. The equations for transition operators are solved in the momentum-space partial-wave framework.Results: Differential cross sections for 26 Al(d, p) 27 Al reactions are calculated using nonlocal nuclear optical potentials and a number of realistic np potentials. Only a weak dependence on the np force model is observed, typically one order of magnitude lower than in the previous ADWA study. The shape of the angular distribution of the experimental data is well reproduced.Conclusions: Cross sections of (d, p) transfer reactions calculated using a rigorous three-body method show little sensitivity to the np interaction model. This indicates a failure of the ADWA in the context of nonlocal potentials. Some evident shortcomings of the ADWA are pointed out.

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Section: Introductionmentioning

confidence: 59%

Weak sensitivity of three-body ( d,p ) reactions to np force models

Deltuva

2018

Phys. Rev. C

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“…Outside of the scaling region the cross section obtained in the present experiment fits well to the trend of previously measured data at two other energies. The theoretical predictions based on the Single-Scattering Approximation with AV18, CD Bonn and CD Bonn+∆ potentials underestimate the data, as it was expected by the authors [25,26]. [32] (lines connecting points are used to guide the eye).…”

Section: E [Adc Channel]mentioning

confidence: 59%

“…The 3N and 4N dynamical components were modeled separately via the explicit treatment of a single ∆-isobar for p-3 He elastic scattering at 30 MeV. The observables for p-3 He elastic scattering have also been calculated at proton beam energy of 70 MeV [22]. Recent progress in calculations for d-d systems is presented in [23][24][25]27] and in the review article [7].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the cross section for dd elastic scattering and dd→nHe3

et al. 2019

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Differential cross sections of 2 H(d,d)d elastic scattering and proton transfer 2 H(d, 3 He)n reactions at 160 MeV beam energy have been obtained. They have been normalized relative to the existing cross-section data for the 2 H(d,d)d elastic scattering at 180 and 130 MeV, benefitting from the negligible energy dependence of this observable at certain range of the four momentum transfer. The experiment was performed at KVI in Groningen, the Netherlands using the BINA detector. The elastic scattering data are compared to theoretical predictions based on the lowest-order term in the Neumann series expansion for four-nucleon transition operators. The calculations underpredict the data. The data presented in this paper can be used to validate the future theoretical findings.

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“…Over the last decade, many theoretical efforts have focused on advancing the theory for (d, p) reactions (e.g. [6,7]) and testing existing methods (e.g. [4,8,9]).…”

Section: Introductionmentioning

confidence: 99%

“…[4,8,9]). Currently, the most complete implementation of the theory is provided by the Lisbon group [10], which solves the Faddeev equations in the Alt, Grassberger and Sandhas [11] formulation. The method introduced in [10] treats the Coulomb interaction with a screening and renormalization procedure as detailed in [12,13].…”

Section: Introductionmentioning

confidence: 99%

Separable Potentials for (d,p) Reaction Calculations

Elster

Hlophe

Eremenko

et al. 2016

J. Phys.: Conf. Ser.

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An important ingredient for applications of nuclear physics to e.g. astrophysics or nuclear energy are the cross sections for reactions of neutrons with rare isotopes. Since direct measurements are often not possible, indirect methods like (d, p) reactions must be used instead. Those (d, p) reactions may be viewed as effective three-body reactions and described with Faddeev techniques. An additional challenge posed by (d, p) reactions involving heavier nuclei is the treatment of the Coulomb force. To avoid numerical complications in dealing with the screening of the Coulomb force, recently a new approach using the Coulomb distorted basis in momentum space was suggested. In order to implement this suggestion, one needs not only to derive a separable representation of neutron-and proton-nucleus optical potentials, but also compute the Coulomb distorted form factors in this basis.

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Statybinė medžiagotyra

Cited by 10 publications

References 0 publications

Weak sensitivity of three-body ( d,p ) reactions to np force models

Weak sensitivity of three-body ( d,p ) reactions to np force models

Investigation of the cross section for dd elastic scattering and dd→nHe3

Separable Potentials for (d,p) Reaction Calculations

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