Explicit inclusion of nonlocality in (d,p) transfer reactions

Titus, L. J.; Nunes, F. M.; Potel, G.

doi:10.1103/PhysRevC.93.014604

Title: Explicit inclusion of nonlocality in $(d, p)$ transfer reactions

Journal Article · Wed Jan 06 00:00:00 EST 2016 · Physical Review C

DOI:https://doi.org/10.1103/PhysRevC.93.014604· OSTI ID:1332500

Titus, L. J. ^[1]; Nunes, F. M. ^[1]; Potel, G. ^[2]

Michigan State Univ., East Lansing, MI (United States)
Michigan State Univ., East Lansing, MI (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)

Traditionally, nucleon-nucleus optical potentials are made local for convenience. In recent work we studied the effects of including nonlocal interactions explicitly in the final state for (d,p) reactions, within the distorted wave Born approximation. Our goal in this work is to develop an improved formalism for nonlocal interactions that includes deuteron breakup and to use it to study the effects of including nonlocal interactions in transfer (d,p) reactions, in both the deuteron and the proton channel. We extend the finite-range adiabatic distorted wave approximation to include nonlocal nucleon optical potentials. We apply our method to (d,p) reactions on ¹⁶O, ⁴⁰Ca, ⁴⁸Ca, ¹²⁶Sn, ¹³²Sn, and ²⁰⁸Pb at 10, 20 and 50 MeV. Here, we find that nonlocality in the deuteron scattering state reduces the amplitude of the wave function in the nuclear interior, and shifts the wave function outward. In many cases, this has the effect of increasing the transfer cross section at the first peak of the angular distributions. This increase was most significant for heavy targets and for reactions at high energies. Lastly, our systematic study shows that, if only local optical potentials are used in the analysis of experimental (d, p) transfer cross sections, the extracted spectroscopic factors may be incorrect by up to 40% due to the local approximation.

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Research Organization:: Michigan State Univ., East Lansing, MI (United States)

Sponsoring Organization:: USDOE National Nuclear Security Administration (NNSA)

Grant/Contract Number:: FG52-08NA28552

OSTI ID:: 1332500

Alternate ID(s):: OSTI ID: 1234285

Journal Information:: Physical Review C, Vol. 93, Issue 1; ISSN 2469-9985

Publisher:: APSCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 36 works

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Three-body problem with velocity-dependent optical potentials: a case of ( d , p ) reactions Timofeyuk, N. K. Journal of Physics G: Nuclear and Particle Physics, Vol. 46, Issue 6 https://doi.org/10.1088/1361-6471/ab0992	journal	April 2019
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Three-body problem with velocity-dependent optical potentials: a case of $(d,p)$ reactions Timofeyuk, N. K. arXiv https://doi.org/10.48550/arxiv.1903.04216	text	January 2019

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