Scission configuration of U-239 from yields and kinetic information of fission fragments
Journal article, 2020
The simultaneous measurement of the isotopic fission-fragment yields and fission-fragment velocities of U-239 has been performed for the first time. The U-239 fissioning system was produced in one-neutron transfer reactions between a U-238 beam at 5.88 MeV/nucleon and a Be-9 target. The combination of inverse kinematics at low energy and the use of the VAMOS + + spectrometer at the GANIL facility allows the isotopic identification of the full fission-fragment distribution and their velocity in the reference frame of the fissioning system. The proton and neutron content of the fragments at scission, their total kinetic and total excitation energy, as well as the neutron multiplicity were determined. Information from the scission point configuration is obtained from these observables and the correlation between them. The role of the octupole-deformed proton and neutron shells in the fission-fragment production is discussed.
Author
D. Ramos
Grand Accélérateur National d'Ions Lourds (GANIL)
University Paris-Saclay
M. Caamano
Universidade de Santiagode Compostela
A. Lemasson
Grand Accélérateur National d'Ions Lourds (GANIL)
M. Rejmund
Grand Accélérateur National d'Ions Lourds (GANIL)
H. Alvarez-Pol
Universidade de Santiagode Compostela
L. Audouin
University Paris-Saclay
J. D. Frankland
Grand Accélérateur National d'Ions Lourds (GANIL)
B. Fernandez-Dominguez
Universidade de Santiagode Compostela
E. Galiana-Baldo
Universidade de Santiagode Compostela
LIP - Lisboa
J. Piot
Grand Accélérateur National d'Ions Lourds (GANIL)
C. Schmitt
University of Strasbourg
D. Ackermann
Grand Accélérateur National d'Ions Lourds (GANIL)
S. Biswas
Grand Accélérateur National d'Ions Lourds (GANIL)
E. Clement
Grand Accélérateur National d'Ions Lourds (GANIL)
D. Durand
Normandie University
F. Farget
Normandie University
M. O. Fregeau
Grand Accélérateur National d'Ions Lourds (GANIL)
D. Galaviz
LIP - Lisboa
Andreas Martin Heinz
Chalmers, Physics, Subatomic, High Energy and Plasma Physics
A. Henriques
University of Bordeaux
B. Jacquot
Grand Accélérateur National d'Ions Lourds (GANIL)
B. Jurado
University of Bordeaux
Y. H. Kim
Grand Accélérateur National d'Ions Lourds (GANIL)
P. Morfouace
Grand Accélérateur National d'Ions Lourds (GANIL)
D. Ralet
University Paris-Saclay
T. Roger
Grand Accélérateur National d'Ions Lourds (GANIL)
P. Teubig
LIP - Lisboa
I Tsekhanovich
University of Bordeaux
Physical Review C
24699985 (ISSN) 24699993 (eISSN)
Vol. 101 3 034609Subject Categories
Accelerator Physics and Instrumentation
Subatomic Physics
Atom and Molecular Physics and Optics
DOI
10.1103/PhysRevC.101.034609