Comment on “Structure effects in the N15(n,γ)N16 radiative capture reaction from the Coulomb dissociation of N16

Peter Mohr
Phys. Rev. C 93, 059801 – Published 31 May 2016

Abstract

In their recent study Neelam, Shubhchintak, and Chatterjee have claimed that “it would certainly be useful to perform a Coulomb dissociation experiment to find the low-energy capture cross section for the reaction” N15(n,γ)N16. However, it is obvious that a Coulomb dissociation experiment cannot constrain this capture cross section because the dominating branchings of the capture reaction lead to excited states in N16, which do not contribute in a Coulomb dissociation experiment. An estimate of the total N15(n,γ)N16 cross section from Coulomb dissociation of N16 requires a precise knowledge of the γ-ray branchings in the capture reaction. Surprisingly, the calculation of Neelam, Shubhchintak, and Chatterjee predicts a strongly energy-dependent ground-state branching of the order of 0.05% to 0.6% at energies between 100 and 500 keV, which is almost 2 orders of magnitude below calculations in the direct capture model. Additionally, this calculation of Neelam, Shubhchintak, and Chatterjee deviates significantly from the expected energy dependence for p-wave capture.

  • Figure
  • Received 6 November 2015

DOI:https://doi.org/10.1103/PhysRevC.93.059801

©2016 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

Peter Mohr*

  • Diakonie-Klinikum, D-74523 Schwäbisch Hall, Germany and Institute for Nuclear Research (ATOMKI), H-4001 Debrecen, Hungary

  • *WidmaierMohr@t-online.de

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Original Article

Structure effects in the N15(n,γ)N16 radiative capture reaction from the Coulomb dissociation of N16

Neelam, Shubhchintak, and R. Chatterjee
Phys. Rev. C 92, 044615 (2015)

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Vol. 93, Iss. 5 — May 2016

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