Neutron Capture Cross Section of Unstable Ni-63: Implications for Stellar Nucleosynthesis

C. Lederer, C. Massimi, S. Altstadt, J. Andrzejewski, L. Audouin, M. Barbagallo, V. Becares, F. Becvar, F. Belloni, E. Berthoumieux, J. Billowes, V. Boccone, D. Bosnar, M. Brugger, M. Calviani, F. Calvino, D. Cano-Ott, C. Carrapico, F. Cerutti, E. ChiaveriM. Chin, N. Colonna, G. Cortes, M. A. Cortes-Giraldo, M. Diakaki, C. Domingo-Pardo, I. Duran, R. Dressler, N. Dzysiuk, C. Eleftheriadis, A. Ferrari, K. Fraval, S. Ganesan, A. R. Garcia, G. Giubrone, M. B. Gomez-Hornillos, I. F. Goncalves, E. Gonzalez-Romero, E. Griesmayer, C. Guerrero, F. Gunsing, P. Gurusamy, D. G. Jenkins, E. Jericha, Y. Kadi, F. Kaeppeler, D. Karadimos, N. Kivel, P. Koehler, T. Rauscher, n TOF Collaboration

    Research output: Contribution to journalLetterpeer-review

    36 Citations (Scopus)
    117 Downloads (Pure)

    Abstract

    The Ni-63(n, gamma) cross section has been measured for the first time at the neutron time-of-flight facility n_TOF at CERN from thermal neutron energies up to 200 keV. In total, capture kernels of 12 (new) resonances were determined. Maxwellian averaged cross sections were calculated for thermal energies from kT = 5-100 keV with uncertainties around 20%. Stellar model calculations for a 25M(circle dot) star show that the new data have a significant effect on the s-process production of Cu-63, Ni-64, and Zn-64 in massive stars, allowing stronger constraints on the Cu yields from explosive nucleosynthesis in the subsequent supernova

    Original languageEnglish
    Article number022501
    Number of pages5
    JournalPhysical Review Letters
    Volume110
    Issue number2
    DOIs
    Publication statusPublished - 8 Jan 2013

    Keywords

    • UNCERTAINTIES
    • NUCLEAR
    • MODEL CALCULATIONS
    • MASSIVE STARS
    • WEAK COMPONENT
    • RATES
    • HALF-LIFE
    • S-PROCESS NUCLEOSYNTHESIS
    • STANDARDIZATION
    • STATISTICAL-MODEL

    Fingerprint

    Dive into the research topics of 'Neutron Capture Cross Section of Unstable Ni-63: Implications for Stellar Nucleosynthesis'. Together they form a unique fingerprint.

    Cite this