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

University of Caen Normandy

F. Farget

University of Caen Normandy

M. O. Fregeau

Grand Accélérateur National d'Ions Lourds (GANIL)

D. Galaviz

LIP - Lisboa

Andreas Martin Heinz

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

2469-9985 (ISSN) 2469-9993 (eISSN)

Vol. 101 3 034609

Subject Categories

Accelerator Physics and Instrumentation

Subatomic Physics

Atom and Molecular Physics and Optics

DOI

10.1103/PhysRevC.101.034609

More information

Latest update

5/19/2020