Dependence of Fission-Fragment Properties On Excitation Energy For Neutron-Rich Actinides
Paper i proceeding, 2016

Experimental access to full isotopic fragment distributions is very important to determine the features of the fission process. However, the isotopic identification of fission fragments has been, in the past, partial and scarce. A solution based on the use of inverse kinematics to study transfer-induced fission of exotic actinides was carried out at GANIL, resulting in the first experiment accessing the full identification of a collection of fissioning systems and their corresponding fission fragment distribution. In these experiments, a U-238 beam at 6.14 AMeV impinged on a carbon target to produce fissioning systems from U to Am by transfer reactions, and Cf by fusion reactions. Isotopic fission yields of Cf-250, Cm-244, Pu-240, Np-239 and U-238 are presented in this work. With this information, the average number of neutrons as a function of the atomic number of the fragments is calculated, which reflects the impact of nuclear structure around Z=50, N=80 on the production of fission fragments. The characteristics of the Super Long, Standard I, Standard II, and Standard III fission channels were extracted from fits of the fragment yields for different ranges of excitation energy. The position and contribution of the fission channels as function of excitation energy are presented.

Författare

D. Ramos

University of Southern California

C. Rodriguez-Tajes

University of Southern California

Grand Accélérateur National d'Ions Lourds (GANIL)

M. Caamano

University of Southern California

F. Farget

Grand Accélérateur National d'Ions Lourds (GANIL)

L. Audouin

Institut de Physique Nucleaire Orsay

J. Benlliure

University of Southern California

E. Casarejos

CIMA

E. Clement

Grand Accélérateur National d'Ions Lourds (GANIL)

D. Cortina

University of Southern California

O. Delaune

Grand Accélérateur National d'Ions Lourds (GANIL)

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

X. Derkx

Université de Caen Normandie

A. Dijon

Grand Accélérateur National d'Ions Lourds (GANIL)

D. Dore

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

B. Fernandez-Dominguez

University of Southern California

G. de France

Grand Accélérateur National d'Ions Lourds (GANIL)

Andreas Martin Heinz

Chalmers, Fysik, Subatomär fysik och plasmafysik

B. Jacquot

Grand Accélérateur National d'Ions Lourds (GANIL)

A. Navin

Grand Accélérateur National d'Ions Lourds (GANIL)

C. Paradela

EU Joint Research Centre (JRC)

Grand Accélérateur National d'Ions Lourds (GANIL)

M. Rejmund

Grand Accélérateur National d'Ions Lourds (GANIL)

T. Roger

Grand Accélérateur National d'Ions Lourds (GANIL)

M. D. Salsac

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

C. Schmitt

Grand Accélérateur National d'Ions Lourds (GANIL)

EPJ Web of Conferences

21016275 (ISSN) 2100014X (eISSN)

Vol. 111 10001

Ämneskategorier

Subatomär fysik

DOI

10.1051/epjconf/201611110001

ISBN

978-2-7598-1970-6