Testing the continuum-discretized coupled channels method for deuteron-induced reactions

Upadhyay, N. J.; Deltuva, A.; Nunes, F. M.

doi:10.1103/physrevc.85.054621

Cited by 85 publications

(116 citation statements)

References 35 publications

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“…The interaction V pn has been chosen of a Gaussian shape as in [16], while in [12], CD Bonn potential [17] is used. However, in [12] it is mentioned that the use of the Gaussian potential leads to differences within 2%, so we expect this difference in potentials to be of little relevance.…”

Section: Resultsmentioning

confidence: 99%

Influence of target deformation and deuteron breakup in (d,p) transfer reactions

Gómez-Ramos

Moro

2017

Phys. Rev. C

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Background: The effect of core excitations in transfer reactions of the form A(d, p)B has been reexamined by some recent works, using the Faddeev/AGS reaction formalism. The effect was found to affect significantly the calculated cross sections and to depend strongly and non-linearly on the incident deuteron energy.Purpose: Our goal is to investigate these effects within a coupled-channels formulation of the scattering problem which, in addition of being computationally less demanding than the Faddeev counterpart, may help shed some light into the physical interpretation of the cited effects. Method:We use an extended version of the continuum-discretized coupled-channels (CDCC) method with explicit inclusion of target excitations within a coupled-channels Born approximation (CDCC-BA) formulation of the transfer transition amplitude. We compare the calculated transfer cross sections with those obtained with an analogous calculation omitting the effect of target excitation. We consider also an adiabatic coupled channels (ACC) method. Our working example is the 10 Be(d,p) 11 Be reaction.Results: We find that the two considered methods (CDCC-BA and ACC) reproduce fairly well the reported energy dependence of the core excitation effect. The main deviation from the pure three-body model calculation (i.e., omitting core excitations) is found to mostly originate from the destructive interference of the direct one-step transfer, and the two-step transfer following target excitation. Conclusions:The proposed method, namely, the combination of the CDCC method and the CCBA formalism, provides a useful and accurate tool to analyse transfer reactions including explicitly, when needed, the effect of target excitations and projectile breakup. The method could be useful for other transfer reactions induced by weakly-bound projectiles, including halo nuclei.

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Section: Resultsmentioning

confidence: 99%

Influence of target deformation and deuteron breakup in (d,p) transfer reactions

Gómez-Ramos

Moro

2017

Phys. Rev. C

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“…The CDCC wave function calculated as described previously is used in the post-form transfer transition amplitude [30,31] to include coupling of the BU states to the transfer channels. The optical model potentials used in the exit channels are same as the 8 Be + target potential parameters as listed in Table I The measured elastic scattering data along with the calculations for the three systems are shown in Figs.…”

Section: Introductionmentioning

confidence: 99%

Exploring the breakup and transfer coupling effects in9Be elastic scattering

et al. 2013

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“…Although we focused our study in the 11 Be structure, we also wanted to explore whether the NN tensor interaction could be contributing to the dynamical effects we observe. We repeated the calculations (including core excitation and assuming a single-particle structure) using a simple Gaussian interaction for the NN force in the deuteron partial wave (as in [25]). The R x obtained in this way are within 2 % of those obtained with the full CD-Bonn.…”

Section: Extracted Structure Informationmentioning

confidence: 99%

Role of core excitation in (d,p) transfer reactions

Deltuva¹,

Ross²,

Norvaišas³

et al. 2016

Phys. Rev. C

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122

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Background: Recent work found that core excitation can be important in extracting structure information from (d,p) reactions.Purpose: Our objective is to systematically explore the role of core excitation in (d,p) reactions, and understand the origin of the dynamical effects.Method: Based on the particle-rotor model of n+ 10 Be, we generate a number of models with a range of separation energies (Sn = 0.1 − 5.0 MeV), while maintaining a significant core excited component. We then apply the latest extension of the momentum-space based Faddeev method, including dynamical core excitation in the reaction mechanism to all orders, to the 10 Be(d,p) 11 Be like reactions, and study the excitation effects for beam energies from E d = 15 − 90 MeV. Results:We study the resulting angular distributions and the differences between the spectroscopic factor that would be extracted from the cross sections, when including dynamical core excitation in the reaction, to that of the original structure model. We also explore how different partial waves affect the final cross section. Conclusions:Our results show a strong beam energy dependence of the extracted spectroscopic factors, which becomes smaller for intermediate beam energies. This dependence increases for loosely bound systems.

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Testing the continuum-discretized coupled channels method for deuteron-induced reactions

Cited by 85 publications

References 35 publications

Influence of target deformation and deuteron breakup in (d,p) transfer reactions

Influence of target deformation and deuteron breakup in (d,p) transfer reactions

Exploring the breakup and transfer coupling effects in9Be elastic scattering

Role of core excitation in (d,p) transfer reactions

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