ARSTRACT 'I'he reaction Xij8(r,77)Ni" has been it~vcstigated between 12-and 24-Mev maximum photon energy. The absolute yield value a t 22 Mev was found to be much lower than reported previously. Also, a shorter half-life of Ni57 was obtained. The cross section was determined using two different methods.'Manuscript rcceived February 16, 1050.
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