Transition-Energy Correlations in the $γ$ -Ray Continuum—A New Approach

A new method, which has been developed to isolate energy-correlated cascades from a background of uncorrelated events in the

γ

-ray continuum, has been applied to the

{}^{16}O

{}^{64}{Ni}

reaction at

E ({}^{16}O) = 80

MeV. In

{}^{74}{Se}

, the dominant reaction product, it gives

\frac{2 I}{ℏ^{2}} ≃ 53 \pm 5 and 65 \pm 6

{MeV}^{- 1}

, respectively, for the rotationallike cascades below and above a phase transition observed at

I \approx 22

units. These data also indicate that only a small portion of the decay proceeds through rotationallike cascades.

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Transition-Energy Correlations in theγ-Ray Continuum—A New Approach