6533b81ffe1ef96bd1278afc
RESEARCH PRODUCT
Single-particle shell strengths near the doubly magic nucleus Ni and the Ni( , ) Cu reaction rate in explosive astrophysical burning
D. KahlP.j. WoodsT. Poxon-pearsonF.m. NunesB.a. BrownH. SchatzT. BaumannD. BazinJ.a. BelargeP.c. BenderB. ElmanA. EstradeA. GadeA. KankainenC. Lederer-woodsS. LipschutzB. LongfellowS.j. LonsdaleE. LunderbergF. MontesW.j. OngG. PerdikakisJ. PereiraC. SullivanR. TavernerD. WeisshaarR. Zegerssubject
description
Angle-integrated cross-section measurements of the $^{56}$Ni(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 $^{57}$Cu−$^{57}$Ni situated adjacent to the doubly magic nucleus $^{56}$Ni. The reactions were studied in inverse kinematics utilizing a beam of radioactive $^{56}$Ni 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 $^{56}$Ni(p,γ)$^{57}$Cu reaction rate for explosive burning conditions in x-ray bursts, where $^{56}$Ni represents a key waiting point in the astrophysical rp-process.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-07-25 | Physics Letters |