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Perey-effect in continuum-discretized coupled-channel description of (d, p) reactions

Gómez-Ramos, M and Timofeyuk, N K (2019) Perey-effect in continuum-discretized coupled-channel description of (d, p) reactions Journal of Physics G: Nuclear and Particle Physics, 46, 085102. pp. 1-12.

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The Perey effect in two-body channels of (d, p) reactions has been known for a long time. It arises when the nonlocal two-body deuteron-target and/or proton-target problem is approximated by a local one, manifesting itself in a reduction of the scattering channel wave functions in the nuclear interior. However, the (d, p) reaction mechanism requires explicit accounting for three-body dynamics involving the target and the neutron and proton in the deuteron. Treating nonlocality of the nucleon-target interactions within a three-body context requires significant effort and demands going beyond the widely-used adiabatic approximation, which can be done using a continuum-discretized coupled-channel (CDCC) method. However, the inclusion of nonlocal interactions into the CDCC description of (d, p) reactions has not been developed yet. Here, we point out that, similarly to the two-body nonlocal case, nonlocality in a three-body channel can be accounted for by introducing the Perey factors. We explain this procedure and present the first CDCC calculations to our knowledge including the Perey effect.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Physics
Authors :
Gómez-Ramos, M
Timofeyuk, N
Date : 1 July 2019
Funders : Science and Technology Facilities Council (STFC), European Union's Horizon 2020, Nuclear.Theory.Vision@UK visitors program
DOI : 10.1088/1361-6471/ab25c5
Copyright Disclaimer : © 2019 IOP Publishing Ltd. As the Version of Record of this article is going to be/has been published on a subscription basis, this Accepted Manuscript will be available for reuse under a CC BY-NC-ND 3.0 licence after a 12 month embargo period. Although reasonable endeavours have been taken to obtain all necessary permissions from third parties to include their copyrighted content within this article, their full citation and copyright line may not be present in this Accepted Manuscript version. Before using any content from this article, please refer to the Version of Record on IOPscience once published for full citation and copyright details, as permission may be required. All third party content is fully copyright protected, unless specifically stated otherwise in the figure caption of the Version of Record.
Uncontrolled Keywords : (d, p) reactions; Coupled-channel methods; Non-locality effects
Depositing User : Clive Harris
Date Deposited : 29 Jul 2019 13:44
Last Modified : 01 Jun 2020 02:08

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