Near-barrier excitation functions have been measured for evaporation-residue production and fission in the 12C+204,206,208Pb and 48Ca+168,170Er systems that lead to the compound nuclei 216,218,220Ra*. A pronounced suppression of evaporation-residue production is observed for the more symmetric combinations, 48Ca+168,170Er. We relate this to the significant quasifission components already observed for these systems.
Fusion suppression in mass asymmetric reactions leading to Ra compound nuclei
MONTAGNOLI, GIOVANNA;SCARLASSARA, FERNANDO;
2003
Abstract
Near-barrier excitation functions have been measured for evaporation-residue production and fission in the 12C+204,206,208Pb and 48Ca+168,170Er systems that lead to the compound nuclei 216,218,220Ra*. A pronounced suppression of evaporation-residue production is observed for the more symmetric combinations, 48Ca+168,170Er. We relate this to the significant quasifission components already observed for these systems.File in questo prodotto:
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