Fission dynamics at high excitation energies investigated in complete kinematics measurements

11th International Conference on Clustering Aspects of Nuclear Structure and Dynamics

Rodríguez-Sánchez, J.L.^1 ; Benlliure, J.^1 ; Taïeb, J.^2 ; Álvarez-Pol, H.^1 ; Audouin, L.^3 ; Ayyad, Y.^1 ; Belier, G.^2 ; Boutoux, G.^2 ; Casarejos, E.^4 ; Chatillon, A.^2 ; Cortina-Gil, D.^1 ; Gorbinet, T.^2 ; Heinz, A.^5 ; Keli-Heil, A.^6 ; Laurent, B.^2 ; Martin, J.F.^2 ; Paradela, C.^1 ; Pellereau, E.^2 ; Pietras, B.^1 ; Ramos, D.^1 ; Rodríguez-Tajes, C.^7 ; Simon, H.^6 ; Vargas, J.^1

Universidad de Santiago de Compostela, Santiago de Compostela

E-15782, Spain^1

CEA, DAM, DIF, Arpajon

F-91297, France^2

Institut de Physique Nucléaire d'Orsay, Orsay

F-91406, France^3

Universidad de Vigo, Vigo

E-36200, Spain^4

Chalmers University of Technology, Gothenburg

SE-412 96, Sweden^5

GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt

D-64291, Germany^6

Grand Accélérateur National d'Ions Lourds, Caen

F-14076, France^7

关键词: Complete kinematics measurements;    Dissipative effects;    Fission dynamics;    Fission fragment;    Inverse kinematics techniques;    Light charged particles;    Model calculations;    Proton-induced fissions;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/863/1/012047/pdf
DOI  :  10.1088/1742-6596/863/1/012047

来源: IOP

【 摘 要 】

Light-charged particles emitted in proton-induced fission reactions on208Pb have been measured at different kinetic energies: 370A, 500A, and 650A MeV. The experiment was performed by the SOFIA collaboration at the GSI facilities in Darmstadt (Germany). The inverse kinematics technique was combined with a setup especially designed to measure light-charged particles in coincidence with fission fragments. The data were compared with different model calculations to assess the ground-to-saddle dynamics. The results confirm that transient and dissipative effects are required for an accurate description of the fission observables.