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

Abstract

[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 ($S_n=0.1-5.0$ 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 that become smaller for intermediate beam energies. This dependence increases for loosely bound systems.

7 pages, 4 figures, to be published in Phys. Rev. C

References in corpus (5)

• Systematics of intermediate-energy single-nucleon removal cross sections
• Three-body Faddeev-Alt-Grassberger-Sandhas approach to direct nuclear reactions
• Interplay between valence and core excitation mechanisms in the breakup of halo nuclei
• Core Transitions in the Breakup of Exotic Nuclei
• Core excitation in three-body nuclear reactions: Improved nucleon-core potential

Cited by in corpus (6)

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• Effects of an induced three-body force in the incident channel of (d,p) reactions
• Core-excitation effects in three-body breakup reactions studied using the Faddeev formalism
• Modeling of Deuteron Induced Reactions on Molybdenum at Low Energies
• Nonspherical Pauli-forbidden states in deformed halo nuclei: Impact on the ${}^7\mathrm{Be}+p$ resonant states in the particle rotor model
• Status of experimental knowledge on the unbound nucleus ${}^{13}$Be