학술논문
Single-particle shell strengths near the doubly magic nucleus 56Ni and the 56Ni(p,γ)57Cu reaction rate in explosive astrophysical burning
Document Type
article
Author
D. Kahl; P.J. Woods; T. Poxon-Pearson; F.M. Nunes; B.A. Brown; H. Schatz; T. Baumann; D. Bazin; J.A. Belarge; P.C. Bender; B. Elman; A. Estrade; A. Gade; A. Kankainen; C. Lederer-Woods; S. Lipschutz; B. Longfellow; S.-J. Lonsdale; E. Lunderberg; F. Montes; W.J. Ong; G. Perdikakis; J. Pereira; C. Sullivan; R. Taverner; D. Weisshaar; R. Zegers
Source
Physics Letters B, Vol 797, Iss , Pp - (2019)
Subject
Language
English
ISSN
0370-2693
Abstract
Angle-integrated cross-section measurements of the 56Ni(d,n) and (d,p) stripping reactions have been performed to determine the single-particle strengths of low-lying excited states in the mirror nuclei pair 57Cu−57Ni situated adjacent to the doubly magic nucleus 56Ni. The reactions were studied in inverse kinematics utilizing a beam of radioactive 56Ni ions in conjunction with the GRETINA γ-array. Spectroscopic factors are compared with new shell-model calculations using a full pf model space with the GPFX1A Hamiltonian for the isospin-conserving strong interaction plus Coulomb and charge-dependent Hamiltonians. These results were used to set new constraints on the 56Ni(p,γ)57Cu reaction rate for explosive burning conditions in x-ray bursts, where 56Ni represents a key waiting point in the astrophysical rp-process. Keywords: X-ray bursts, Shell model, Transfer reactions, Radioactive beams