Si-26 Excited States Via One-Neutron Removal From Si-27 Using Radioactive Beam

A measurement of the p(Si-27, d)Si-26 reaction has been performed to study levels of Si-26, with connections to the stellar Al-25(p, gamma)Si-26 reaction rate. A beam of radioactive Si-27 of energy 84.3 MeV/A was impinged on a polypropylene foil (CH2) of 180 mg/cm(2) in thickness. De-excitation gamma-rays were detected with a highly-segmented germanium detector array, in coincidence with the Si-26 recoils. Our results are an independent measurement of states used in the energy calibration of other experiments on Si-26 structure. They also suggest that the spin-parity of the E-x((26) Si) = 6454 keV (E-r = 940 keV) state should be 4(+) instead of the previously adopted assignment of 0(+).