PT Journal
AU n_TOF Collaboration (Lederer, Cea
   Domingo-Pardo, C
   Giubrone, G
   Tain, JL
TI Neutron Capture Cross Section of Unstable Ni-63: Implications for Stellar Nucleosynthesis
SO Physical Review Letters
JI Phys. Rev. Lett.
PY 2013
BP 022501
EP 5pp
VL 110
IS 2
DI 10.1103/PhysRevLett.110.022501
LA English
AB 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.
ER