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Title: Single-particle shell strengths near the doubly magic nucleus 56Ni and the 56Ni(p,γ)57Cu reaction rate in explosive astrophysical burning

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 pƒ model space with the GPFX1A Hamiltonian for the isospin-conserving strong interaction plus Coulomb and chargedependent 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.

Authors:
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Publication Date:
Research Org.:
Michigan State Univ., East Lansing, MI (United States); Univ. of California, Oakland, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1562595
Alternate Identifier(s):
OSTI ID: 1802678
Grant/Contract Number:  
SC0014537; AC02-05CH11231
Resource Type:
Published Article
Journal Name:
Physics Letters B
Additional Journal Information:
Journal Name: Physics Letters B Journal Volume: 797 Journal Issue: C; Journal ID: ISSN 0370-2693
Publisher:
Elsevier
Country of Publication:
Netherlands
Language:
English
Subject:
79 ASTRONOMY AND ASTROPHYSICS; Astronomy & Astrophysics; Physics; X-ray bursts; Shell model; Transfer reactions; Radioactive beams

Citation Formats

Kahl, D., Woods, P. J., Poxon-Pearson, T., Nunes, F. M., Brown, B. A., Schatz, H., Baumann, T., Bazin, D., Belarge, J. A., Bender, P. C., Elman, B., Estrade, A., Gade, A., Kankainen, A., Lederer-Woods, C., Lipschutz, S., Longfellow, B., Lonsdale, S. -J., Lunderberg, E., Montes, F., Ong, W. J., Perdikakis, G., Pereira, J., Sullivan, C., Taverner, R., Weisshaar, D., and Zegers, R. Single-particle shell strengths near the doubly magic nucleus 56Ni and the 56Ni(p,γ)57Cu reaction rate in explosive astrophysical burning. Netherlands: N. p., 2019. Web. doi:10.1016/j.physletb.2019.134803.
Kahl, D., Woods, P. J., Poxon-Pearson, T., Nunes, F. M., Brown, B. A., Schatz, H., Baumann, T., Bazin, D., Belarge, J. A., Bender, P. C., Elman, B., Estrade, A., Gade, A., Kankainen, A., Lederer-Woods, C., Lipschutz, S., Longfellow, B., Lonsdale, S. -J., Lunderberg, E., Montes, F., Ong, W. J., Perdikakis, G., Pereira, J., Sullivan, C., Taverner, R., Weisshaar, D., & Zegers, R. Single-particle shell strengths near the doubly magic nucleus 56Ni and the 56Ni(p,γ)57Cu reaction rate in explosive astrophysical burning. Netherlands. https://doi.org/10.1016/j.physletb.2019.134803
Kahl, D., Woods, P. J., Poxon-Pearson, T., Nunes, F. M., Brown, B. A., Schatz, H., Baumann, T., Bazin, D., Belarge, J. A., Bender, P. C., Elman, B., Estrade, A., Gade, A., Kankainen, A., Lederer-Woods, C., Lipschutz, S., Longfellow, B., Lonsdale, S. -J., Lunderberg, E., Montes, F., Ong, W. J., Perdikakis, G., Pereira, J., Sullivan, C., Taverner, R., Weisshaar, D., and Zegers, R. Tue . "Single-particle shell strengths near the doubly magic nucleus 56Ni and the 56Ni(p,γ)57Cu reaction rate in explosive astrophysical burning". Netherlands. https://doi.org/10.1016/j.physletb.2019.134803.
@article{osti_1562595,
title = {Single-particle shell strengths near the doubly magic nucleus 56Ni and the 56Ni(p,γ)57Cu reaction rate in explosive astrophysical burning},
author = {Kahl, D. and Woods, P. J. and Poxon-Pearson, T. and Nunes, F. M. and Brown, B. A. and Schatz, H. and Baumann, T. and Bazin, D. and Belarge, J. A. and Bender, P. C. and Elman, B. and Estrade, A. and Gade, A. and Kankainen, A. and Lederer-Woods, C. and Lipschutz, S. and Longfellow, B. and Lonsdale, S. -J. and Lunderberg, E. and Montes, F. and Ong, W. J. and Perdikakis, G. and Pereira, J. and Sullivan, C. and Taverner, R. and Weisshaar, D. and Zegers, R.},
abstractNote = {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 pƒ model space with the GPFX1A Hamiltonian for the isospin-conserving strong interaction plus Coulomb and chargedependent 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.},
doi = {10.1016/j.physletb.2019.134803},
journal = {Physics Letters B},
number = C,
volume = 797,
place = {Netherlands},
year = {2019},
month = {10}
}