Presaddle and postsaddle dissipative effects in fission using complete kinematics measurements
Artikel i vetenskaplig tidskrift, 2016

A complete kinematics measurement of the two fission fragments was used for the first time to investigate fission dynamics at small and large deformations. Fissioning systems with high excitation energies, compact shapes, and low angular momenta were produced in inverse kinematics by using spallation reactions of lead projectiles. A new generation experimental setup allowed for the first full and unambiguous identification in mass and atomic number of both fission fragments. This measurement permitted us to accurately determine fission cross sections, the charge distribution, and the neutron excess of the fission fragments as a function of the atomic number of the fissioning system. These data are compared with different model calculations to extract information on the value of the dissipation parameter at small and large deformations. The present results do not show any sizable dependence of the nuclear dissipation parameter on temperature or deformation.

Författare

J. L. Rodriguez-Sanchez

Universidade de Santiagode Compostela

J. Benlliure

Universidade de Santiagode Compostela

J. Taieb

Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)

H. Alvarez-Pol

Universidade de Santiagode Compostela

L. Audouin

Institut de Physique Nucleaire Orsay

Y. Ayyad

Michigan State University

Universidade de Santiagode Compostela

G. Belier

Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)

G. Boutoux

Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)

Universite de Bordeaux

E. Casarejos

Universidad de Vigo

A. Chatillon

Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)

D. Cortina-Gil

Universidade de Santiagode Compostela

T. Gorbinet

Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)

Andreas Martin Heinz

Chalmers, Fysik, Subatomär fysik och plasmafysik

A. Kelic-Heil

GSI Helmholtzzentrum für Schwerionenforschung

B. Laurent

Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)

J. F. Martin

Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)

C. Paradela

Universidade de Santiagode Compostela

EU Joint Research Centre (JRC)

E. Pellereau

Le Commissariat à l’Énergie Atomique et aux Énergies Alternatives (CEA)

B. Pietras

Universidade de Santiagode Compostela

D. Ramos

Universidade de Santiagode Compostela

C. Rodriguez-Tajes

Universidade de Santiagode Compostela

Grand Accélérateur National d'Ions Lourds (GANIL)

D. M. Rossi

GSI Helmholtzzentrum für Schwerionenforschung

H. Simon

GSI Helmholtzzentrum für Schwerionenforschung

J. Vargas

Universidade de Santiagode Compostela

B. Voss

GSI Helmholtzzentrum für Schwerionenforschung

Physical Review C

24699985 (ISSN) 24699993 (eISSN)

Vol. 94 6 061601

Ämneskategorier

Subatomär fysik

DOI

10.1103/PhysRevC.94.061601

Mer information

Senast uppdaterat

2018-06-11