Dissipative effects in fission investigated in complete kinematics measurements
Paper i proceeding, 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.

Författare

J. L. Rodriguez-Sanchez

Universidad de Santiago de Compostela

J. Benlliure

Universidad de Santiago de Compostela

J. Taieb

Commissariat a L'Energie Atomique CEA

D. Ramos

Universidad de Santiago de Compostela

H. Alvarez-Pol

Universidad de Santiago de Compostela

L. Audouin

Institut de Physique Nucleaire Orsay

Y. Ayyad

Universidad de Santiago de Compostela

G. Belier

Commissariat a L'Energie Atomique CEA

G. Boutoux

Commissariat a L'Energie Atomique CEA

E. Casarejos

Universidad de Vigo

A. Chatillon

Commissariat a L'Energie Atomique CEA

D. Cortina-Gil

Universidad de Santiago de Compostela

T. Gorbinet

Commissariat a L'Energie Atomique CEA

Andreas Martin Heinz

Chalmers, Fysik, Subatomär fysik och plasmafysik

A. Kelic-Heil

GSI Helmholtz Centre for Heavy Ion Research GmbH

B. Laurent

Commissariat a L'Energie Atomique CEA

J. F. Martin

Commissariat a L'Energie Atomique CEA

C. Paradela

Universidad de Santiago de Compostela

E. Pellereau

Commissariat a L'Energie Atomique CEA

B. Pietras

Universidad de Santiago de Compostela

C. Rodriguez-Tajes

GANIL Grand Accelerateur National d'Ions Lourds

D. Rossi

GSI Helmholtz Centre for Heavy Ion Research GmbH

H. Simon

GSI Helmholtz Centre for Heavy Ion Research GmbH

J. Vargas

Universidad de Santiago de Compostela

B. Voss

GSI Helmholtz Centre for Heavy Ion Research GmbH

EPJ Web of Conferences

21016275 (ISSN) 2100014X (eISSN)

Vol. 146 04053

Ämneskategorier

Fysik

DOI

10.1051/epjconf/201714604053

ISBN

978-275989020-0