Determining the rp -process flow through Ni 56: Resonances in Cu 57 (p,γ) Zn 58 identified with GRETINA

C. Langer; F. Montes; A. Aprahamian; D. W. Bardayan; D. Bazin; B. A. Brown; J. Browne; H. Crawford; R. H. Cyburt; C. Domingo-Pardo; A. Gade; S. George; P. Hosmer; L. Keek; A. Kontos; I. Y. Lee; A. Lemasson; E. Lunderberg; Y. Maeda; M. Matos; Z. Meisel; S. Noji; F. M. Nunes; A. Nystrom; G. Perdikakis; J. Pereira; S. J. Quinn; F. Recchia; H. Schatz; M. Scott; K. Siegl; A. Simon; M. Smith; A. Spyrou; J. Stevens; S. R. Stroberg; D. Weisshaar; J. Wheeler; K. Wimmer; R. G.T. Zegers

doi:10.1103/PhysRevLett.113.032502

Determining the rp -process flow through Ni 56: Resonances in Cu 57 (p,γ) Zn 58 identified with GRETINA

C. Langer, F. Montes, A. Aprahamian, D. W. Bardayan, D. Bazin, B. A. Brown, J. Browne, H. Crawford, R. H. Cyburt, C. Domingo-Pardo, A. Gade, S. George, P. Hosmer, L. Keek, A. Kontos, I. Y. Lee, A. Lemasson, E. Lunderberg, Y. Maeda, M. MatosZ. Meisel, S. Noji, F. M. Nunes, A. Nystrom, G. Perdikakis, J. Pereira, S. J. Quinn, F. Recchia, H. Schatz, M. Scott, K. Siegl, A. Simon, M. Smith, A. Spyrou, J. Stevens, S. R. Stroberg, D. Weisshaar, J. Wheeler, K. Wimmer, R. G.T. Zegers

Physics

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Abstract

An approach is presented to experimentally constrain previously unreachable (p, γ) reaction rates on nuclei far from stability in the astrophysical rp process. Energies of all critical resonances in the Cu57(p,γ)Zn58 reaction are deduced by populating states in Zn58 with a (d, n) reaction in inverse kinematics at 75MeV/u, and detecting γ-ray-recoil coincidences with the state-of-the-art γ-ray tracking array GRETINA and the S800 spectrograph at the National Superconducting Cyclotron Laboratory. The results reduce the uncertainty in the Cu57(p,γ) reaction rate by several orders of magnitude. The effective lifetime of Ni56, an important waiting point in the rp process in x-ray bursts, can now be determined entirely from experimentally constrained reaction rates.

Original language	English
Article number	032502
Journal	Physical Review Letters
Volume	113
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevLett.113.032502
State	Published - Jul 14 2014

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Langer, C., Montes, F., Aprahamian, A., Bardayan, D. W., Bazin, D., Brown, B. A., Browne, J., Crawford, H., Cyburt, R. H., Domingo-Pardo, C., Gade, A., George, S., Hosmer, P., Keek, L., Kontos, A., Lee, I. Y., Lemasson, A., Lunderberg, E., Maeda, Y., ... Zegers, R. G. T. (2014). Determining the rp -process flow through Ni 56: Resonances in Cu 57 (p,γ) Zn 58 identified with GRETINA. Physical Review Letters, 113(3), Article 032502. https://doi.org/10.1103/PhysRevLett.113.032502

@article{5b1fb40817d3479fb084b818b1b1abeb,

title = "Determining the rp -process flow through Ni 56: Resonances in Cu 57 (p,γ) Zn 58 identified with GRETINA",

abstract = "An approach is presented to experimentally constrain previously unreachable (p, γ) reaction rates on nuclei far from stability in the astrophysical rp process. Energies of all critical resonances in the Cu57(p,γ)Zn58 reaction are deduced by populating states in Zn58 with a (d, n) reaction in inverse kinematics at 75MeV/u, and detecting γ-ray-recoil coincidences with the state-of-the-art γ-ray tracking array GRETINA and the S800 spectrograph at the National Superconducting Cyclotron Laboratory. The results reduce the uncertainty in the Cu57(p,γ) reaction rate by several orders of magnitude. The effective lifetime of Ni56, an important waiting point in the rp process in x-ray bursts, can now be determined entirely from experimentally constrained reaction rates.",

author = "C. Langer and F. Montes and A. Aprahamian and Bardayan, {D. W.} and D. Bazin and Brown, {B. A.} and J. Browne and H. Crawford and Cyburt, {R. H.} and C. Domingo-Pardo and A. Gade and S. George and P. Hosmer and L. Keek and A. Kontos and Lee, {I. Y.} and A. Lemasson and E. Lunderberg and Y. Maeda and M. Matos and Z. Meisel and S. Noji and Nunes, {F. M.} and A. Nystrom and G. Perdikakis and J. Pereira and Quinn, {S. J.} and F. Recchia and H. Schatz and M. Scott and K. Siegl and A. Simon and M. Smith and A. Spyrou and J. Stevens and Stroberg, {S. R.} and D. Weisshaar and J. Wheeler and K. Wimmer and Zegers, {R. G.T.}",

year = "2014",

month = jul,

day = "14",

doi = "10.1103/PhysRevLett.113.032502",

language = "English",

volume = "113",

journal = "Physical Review Letters",

issn = "0031-9007",

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Langer, C, Montes, F, Aprahamian, A, Bardayan, DW, Bazin, D, Brown, BA, Browne, J, Crawford, H, Cyburt, RH, Domingo-Pardo, C, Gade, A, George, S, Hosmer, P, Keek, L, Kontos, A, Lee, IY, Lemasson, A, Lunderberg, E, Maeda, Y, Matos, M, Meisel, Z, Noji, S, Nunes, FM, Nystrom, A, Perdikakis, G, Pereira, J, Quinn, SJ, Recchia, F, Schatz, H, Scott, M, Siegl, K, Simon, A, Smith, M, Spyrou, A, Stevens, J, Stroberg, SR, Weisshaar, D, Wheeler, J, Wimmer, K & Zegers, RGT 2014, 'Determining the rp -process flow through Ni 56: Resonances in Cu 57 (p,γ) Zn 58 identified with GRETINA', Physical Review Letters, vol. 113, no. 3, 032502. https://doi.org/10.1103/PhysRevLett.113.032502

TY - JOUR

T1 - Determining the rp -process flow through Ni 56

T2 - Resonances in Cu 57 (p,γ) Zn 58 identified with GRETINA

AU - Langer, C.

AU - Montes, F.

AU - Aprahamian, A.

AU - Bardayan, D. W.

AU - Bazin, D.

AU - Brown, B. A.

AU - Browne, J.

AU - Crawford, H.

AU - Cyburt, R. H.

AU - Domingo-Pardo, C.

AU - Gade, A.

AU - George, S.

AU - Hosmer, P.

AU - Keek, L.

AU - Kontos, A.

AU - Lee, I. Y.

AU - Lemasson, A.

AU - Lunderberg, E.

AU - Maeda, Y.

AU - Matos, M.

AU - Meisel, Z.

AU - Noji, S.

AU - Nunes, F. M.

AU - Nystrom, A.

AU - Perdikakis, G.

AU - Pereira, J.

AU - Quinn, S. J.

AU - Recchia, F.

AU - Schatz, H.

AU - Scott, M.

AU - Siegl, K.

AU - Simon, A.

AU - Smith, M.

AU - Spyrou, A.

AU - Stevens, J.

AU - Stroberg, S. R.

AU - Weisshaar, D.

AU - Wheeler, J.

AU - Wimmer, K.

AU - Zegers, R. G.T.

PY - 2014/7/14

Y1 - 2014/7/14

N2 - An approach is presented to experimentally constrain previously unreachable (p, γ) reaction rates on nuclei far from stability in the astrophysical rp process. Energies of all critical resonances in the Cu57(p,γ)Zn58 reaction are deduced by populating states in Zn58 with a (d, n) reaction in inverse kinematics at 75MeV/u, and detecting γ-ray-recoil coincidences with the state-of-the-art γ-ray tracking array GRETINA and the S800 spectrograph at the National Superconducting Cyclotron Laboratory. The results reduce the uncertainty in the Cu57(p,γ) reaction rate by several orders of magnitude. The effective lifetime of Ni56, an important waiting point in the rp process in x-ray bursts, can now be determined entirely from experimentally constrained reaction rates.

AB - An approach is presented to experimentally constrain previously unreachable (p, γ) reaction rates on nuclei far from stability in the astrophysical rp process. Energies of all critical resonances in the Cu57(p,γ)Zn58 reaction are deduced by populating states in Zn58 with a (d, n) reaction in inverse kinematics at 75MeV/u, and detecting γ-ray-recoil coincidences with the state-of-the-art γ-ray tracking array GRETINA and the S800 spectrograph at the National Superconducting Cyclotron Laboratory. The results reduce the uncertainty in the Cu57(p,γ) reaction rate by several orders of magnitude. The effective lifetime of Ni56, an important waiting point in the rp process in x-ray bursts, can now be determined entirely from experimentally constrained reaction rates.

UR - http://www.scopus.com/inward/record.url?scp=84904548878&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.113.032502

DO - 10.1103/PhysRevLett.113.032502

M3 - Article

AN - SCOPUS:84904548878

SN - 0031-9007

VL - 113

JO - Physical Review Letters

JF - Physical Review Letters

IS - 3

M1 - 032502

ER -

Determining the rp -process flow through Ni 56: Resonances in Cu 57 (p,γ) Zn 58 identified with GRETINA

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