Browsing by Author "Halperin, J"

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    Neutron capture by the chromium isotopes
    (Australian Atomic Energy Commission, 1977-01) Kenny, MJ; Allen, BJ; Musgrove, ARD; Macklin, RL; Halperin, J
    Capture cross sections of the chromium isotopes have been measured at neutron energies up to 350 keV using the capture cross section facility at the 40 m station of the Oak Ridge Electron Linear Accelerator. Parameters have been derived for 180 resonances. A moderate correlation [p(г0n,гγ) - 0.45] is observed between reduced neutron widths n y and radiative widths for s-wave resonances. Calculations of valence widths show that valence capture can only account for the correlated component of the observed radiative widths. An additional mechanism such as a 2p-lh doorway state must therefore be occurring to explain the uncorrelated component.