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EnglishMultiple alpha coincidences and correlations are studied in the reaction 12 C+12 C at 95 MeV for fusion–evaporation events completely detected in charge. Two specific channels with carbon and oxygen residues in coincidence with α− particles are addressed, which are associated with anomalously high branching ratios with respect to the predictions of Hauser–Feshbach calculations. Triple alpha emission appears kinematically compatible with a sequential emission from a highly excited Mg. The phase space distribution of α−α coincidences suggests a correlated emission from a Mg compound, leaving an oxygen residue excited above the threshold for neutron decay. These observations indicate a preferential α emission of 24 Mg at excitation energies well above the threshold for 6−α decay.
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| Titolo: | Non-statistical decay and α-correlations in the 12C+ 12C fusion-evaporation reaction at 95 MeV | |
| Autori: | ||
| Data di pubblicazione: | 2014 | |
| Rivista: | ||
| Abstract: | Multiple alpha coincidences and correlations are studied in the reaction 12 C+12 C at 95 MeV for fusion–evaporation events completely detected in charge. Two specific channels with carbon and oxygen residues in coincidence with α− particles are addressed, which are associated with anomalously high branching ratios with respect to the predictions of Hauser–Feshbach calculations. Triple alpha emission appears kinematically compatible with a sequential emission from a highly excited Mg. The phase space distribution of α−α coincidences suggests a correlated emission from a Mg compound, leaving an oxygen residue excited above the threshold for neutron decay. These observations indicate a preferential α emission of 24 Mg at excitation energies well above the threshold for 6−α decay. | |
| Handle: | http://hdl.handle.net/11571/1214159 | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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