Emission of intermediate mass fragments using γ-spectroscopic techniques

Intermediate mass fragments (IMF) and light particles emitted from the ${}^{58}{\mathrm{N}\mathrm{i}+}^{58}\mathrm{Ni}$ reaction at a beam energy of 375 MeV have been studied. The fragments and light particles were measured in coincidence with 4\ensuremath{\pi} \ensuremath{\gamma}-ray spectrometer. The $Z=6$ (C) kinetic energy spectra and the distribution of the final nuclei in coincidence with the emitted C are well described by Hauser-Feshbach calculations extended to many channels. A detailed study of C-\ensuremath{\gamma} and 3\ensuremath{\alpha}-\ensuremath{\gamma} correlations indicate a strong selectivity of the IMF decay. Our results indicate that the IMF can populate nuclei that are not accessible via multiple light particle $(Z<3)$ emission and, thus, are useful for nuclear structure studies.

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