학술논문
Dissipative effects in fission investigated in complete kinematics measurements
Document Type
article
Author
Rodríguez-Sánchez J.L.; Benlliure J.; Taïeb J.; Ramos D.; Álvarez-Pol H.; Audouin L.; Ayyad Y.; Bélier G.; Boutoux G.; Casarejos E.; Chatillon A.; Cortina-Gil D.; Gorbinet T.; Heinz A.; Kelić-Heil A.; Laurent B.; Martin J.-F.; Paradela C.; Pellereau E.; Pietras B.; Rodríguez-Tajes C.; Rossi D.M.; Simon H.; Vargas J.; Voss B.
Source
EPJ Web of Conferences, Vol 146, p 04053 (2017)
Subject
Language
English
ISSN
2100-014X
Abstract
The study of dissipative effects in fission has been carried out with fusion-fission reactions by using a limited number of observables, such as the fission probabilities, the mass distribution of the fission fragments, or the neutron multiplicities. However, the large angular momenta gained by the compound nucleus in this kind of reaction could affect the conclusions drawn from such experiments. In this work, we propose to investigate the fission dynamics by the use of spallation reactions on 208Pb because the fissioning systems are produced with low angular momentum, small deformations, and high excitation energies, enhancing the dissipative effects. The complete kinematics measurements of the fission fragments and light-charged particles were performed by the use of the SOFIA setup combined with the inverse kinematics technique, allowing us for the first time a full indentification in atomic and mass number of the two fission fragments. These measurements permit us to define new fission observables for the investigation of the temperature and deformation dependencies of the dissipation parameter.