Abstract
The superdeformed states in heavy nuclei withA≳60 are characterized by their gamma decay pattern. In light nuclei, this signature is still missing especially for the cluster states formed in light heavy-ion reactions. The aim of the present experiment was thus to search for γ-ray transitions between 10+ and 8+ resonant states formed in the12C +12C reaction. A bombarding energy ofElab = 32.9 MeV has been chosen to populate a known and isolated 10+ resonance. The experiment has been carried out in a triple coincident mode (fragment-fragment-g) with the outgoing binary fragments detected in two position-sensitive Si detectors and the γ rays in the 4π array Château de Cristal. A few events have been observed which we attributed to the γ-ray transitions we searched for. This would be the first time that such transitions have been seen and, under certain assumptions, a radiative partial width of (1.2 ± 0.4) 3 1025 has been deduced for the 10+ resonant state.
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