Dissipative effects in fission investigated in complete kinematics measurements
Paper in proceedings, 2017

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.

Author

J. L. Rodriguez-Sanchez

Universidade de Santiagode Compostela

J. Benlliure

Universidade de Santiagode Compostela

J. Taieb

The French Alternative Energies and Atomic Energy Commission (CEA)

D. Ramos

Universidade de Santiagode Compostela

H. Alvarez-Pol

Universidade de Santiagode Compostela

L. Audouin

Institut de Physique Nucleaire Orsay

Y. Ayyad

Universidade de Santiagode Compostela

G. Belier

The French Alternative Energies and Atomic Energy Commission (CEA)

G. Boutoux

The French Alternative Energies and Atomic Energy Commission (CEA)

E. Casarejos

Universidad de Vigo

A. Chatillon

The French Alternative Energies and Atomic Energy Commission (CEA)

D. Cortina-Gil

Universidade de Santiagode Compostela

T. Gorbinet

The French Alternative Energies and Atomic Energy Commission (CEA)

Andreas Martin Heinz

Chalmers, Physics, Subatomic and Plasma Physics

A. Kelic-Heil

GSI Helmholtz Centre for Heavy Ion Research

B. Laurent

The French Alternative Energies and Atomic Energy Commission (CEA)

J. F. Martin

The French Alternative Energies and Atomic Energy Commission (CEA)

C. Paradela

Universidade de Santiagode Compostela

E. Pellereau

The French Alternative Energies and Atomic Energy Commission (CEA)

B. Pietras

Universidade de Santiagode Compostela

C. Rodriguez-Tajes

Grand Accélérateur National d'Ions Lourds (GANIL)

D. Rossi

GSI Helmholtz Centre for Heavy Ion Research

H. Simon

GSI Helmholtz Centre for Heavy Ion Research

J. Vargas

Universidade de Santiagode Compostela

B. Voss

GSI Helmholtz Centre for Heavy Ion Research

EPJ Web of Conferences

21016275 (ISSN) 2100014X (eISSN)

Vol. 146 04053

Subject Categories

Physical Sciences

DOI

10.1051/epjconf/201714604053

ISBN

978-275989020-0

More information

Latest update

4/11/2018