Decay modes of excited nuclei are studied in 78;82Kr + 40Ca reactions at 5.5 MeV/nucleon by means of light-charged particles measured in coincidence with intermediate mass fragments and fission-like fragments. Inclusive cross-section distributions of fragments with charge 3 Z 28 are bell-shaped and a strong oddeven- staggering (o-e-s) is observed for 3 Z 12. Coincidence measurements suggest that the light partners in very asymmetric fission are emitted at excitation energies below the particle emission thresholds. Data were confronted to the predictions of statistical models describing the decay of compound nuclei by emission of light particles and fragments. Comparison with models suggests that the o-e-s of the light-fragment yields is mainly due to the successive steps of compound nucleus disintegration.
Decay of excited nuclei produced in the 78,82Kr+40Ca reactions at 5.5 MeV/nucleon / G., Ademard; J. P., Wieleczko; J., Gomez del; LA COMMARA, Marco; E., Bonnet; Vigilante, Mariano; A., Chbihi; J. D., Frankland; Rosato, Elio; Spadaccini, Giulio; Kalandarov, S. h. A.; C., Beck; S., Barlini; B., Borderie; R., Bougault; R., Dayras; G., De Angelis; J., De Sanctis; V. L., Kravchuk; P., Lautesse; N., Le Neindre; J., Moisan; A., D’Onofrio; M., Parlog; D., Pierroutsakou; M., Romoli; R., Roy; G. G., Adamian; N. V., Antonenko. - vol. 17:(2011), pp. 10005-1-10005-4. (Intervento presentato al convegno 5th International Conference FUSION11 tenutosi a Saint-Malo, France nel May 2-6, 2011) [10.1051/epjconf/20111710005].
Decay of excited nuclei produced in the 78,82Kr+40Ca reactions at 5.5 MeV/nucleon
LA COMMARA, MARCO;VIGILANTE, MARIANO;ROSATO, ELIO;SPADACCINI, GIULIO;
2011
Abstract
Decay modes of excited nuclei are studied in 78;82Kr + 40Ca reactions at 5.5 MeV/nucleon by means of light-charged particles measured in coincidence with intermediate mass fragments and fission-like fragments. Inclusive cross-section distributions of fragments with charge 3 Z 28 are bell-shaped and a strong oddeven- staggering (o-e-s) is observed for 3 Z 12. Coincidence measurements suggest that the light partners in very asymmetric fission are emitted at excitation energies below the particle emission thresholds. Data were confronted to the predictions of statistical models describing the decay of compound nuclei by emission of light particles and fragments. Comparison with models suggests that the o-e-s of the light-fragment yields is mainly due to the successive steps of compound nucleus disintegration.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
