Dependence of Fission-Fragment Properties On Excitation Energy For Neutron-Rich Actinides
Paper in 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.
Author
D. Ramos
University of Southern California
C. Rodriguez-Tajes
Grand Accélérateur National d'Ions Lourds (GANIL)
University of Southern California
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
The French Alternative Energies and Atomic Energy Commission (CEA)
Grand Accélérateur National d'Ions Lourds (GANIL)
X. Derkx
Normandie University
A. Dijon
Grand Accélérateur National d'Ions Lourds (GANIL)
D. Dore
The French Alternative Energies and Atomic Energy Commission (CEA)
B. Fernandez-Dominguez
University of Southern California
G. de France
Grand Accélérateur National d'Ions Lourds (GANIL)
Andreas Martin Heinz
Chalmers, Physics, Subatomic and Plasma Physics
B. Jacquot
Grand Accélérateur National d'Ions Lourds (GANIL)
A. Navin
Grand Accélérateur National d'Ions Lourds (GANIL)
C. Paradela
Grand Accélérateur National d'Ions Lourds (GANIL)
European Commission (EC)
M. Rejmund
Grand Accélérateur National d'Ions Lourds (GANIL)
T. Roger
Grand Accélérateur National d'Ions Lourds (GANIL)
M. D. Salsac
The French Alternative Energies and Atomic Energy Commission (CEA)
C. Schmitt
Grand Accélérateur National d'Ions Lourds (GANIL)
EPJ Web of Conferences
21016275 (ISSN) 2100014X (eISSN)
Vol. 111 10001978-2-7598-1970-6 (ISBN)
Subject Categories (SSIF 2011)
Subatomic Physics
DOI
10.1051/epjconf/201611110001
ISBN
978-2-7598-1970-6