Mass and kinetic energy distributions of fission fragments using the time dependent generator coordinate method

2004 ◽  
Vol 734 ◽  
pp. 217-220 ◽  
Author(s):  
H. Goutte ◽  
P. Casoli ◽  
J.-F. Berger
Keyword(s):  
Kinetic Energy ◽  
Time Dependent ◽  
Energy Distributions ◽  
Generator Coordinate Method ◽  
Coordinate Method ◽  
Fission Fragments ◽  
Generator Coordinate ◽  
Kinetic Energy Distributions

COLLECTIVE-DYNAMICS EFFECTS IN FISSION OF 256,258FM ISOTOPES

2008 ◽  
Vol 17 (01) ◽  
pp. 81-88 ◽  
Author(s):  
A. DOBROWOLSKI ◽  
H. GOUTTE ◽  
J.-F. BERGER
Keyword(s):  
Generating Functions ◽  
Time Dependent ◽  
Two Dimensional ◽  
Generator Coordinate Method ◽  
Coordinate Method ◽  
Collective Dynamics ◽  
Hartree Fock ◽  
Mass Distributions ◽  
Generator Coordinate ◽  
Induced Fission

A dynamical approach to the neutron-induced fission of 255,257 Fm isotopes based on the time-dependent generator-coordinate method is applied. As the generating functions the eigensolutions of the constrained Hartree-Fock-Bogoliubov method with the effective D1S Gogny force are used. The here presented collective-dynamics calculations in the two-dimensional collective space described by quadrupole and octupole moments allow to determine the fragment mass distributions of those two Fm isotopes.

FISSION FRAGMENT PROPERTIES AT SCISSION WITH THE GOGNY FORCE

2008 ◽  
Vol 17 (01) ◽  
pp. 72-80 ◽  
Author(s):  
N. DUBRAY ◽  
H. GOUTTE ◽  
J.-F. BERGER ◽  
J.-P. DELAROCHE
Keyword(s):  
Fission Fragment ◽  
Large Deformations ◽  
Deformation Energy ◽  
Time Dependent ◽  
Two Dimensional ◽  
Generator Coordinate Method ◽  
Coordinate Method ◽  
Hartree Fock ◽  
Collective Coordinates ◽  
Generator Coordinate

Two-dimensional Hartree-Fock-Bogoliubov (HFB) calculations have been performed from spherical shapes to large deformations with constraints on axial quadrupole and octupole deformations in 238 U , 256–260 Fm and 226 Th actinides. Scission configurations have then been identified in this subspace of collective coordinates and many nuclear properties of the nascent fragments have been derived, such as deformation, deformation energy or prompt neutron multiplicity. The HFB states have then served as basis states for time-dependent collective calculations based on the Time-Dependent Generator Coordinate Method and the Gaussian Overlap Approximation to derive fission fragment yields.

scholarly journals Correlated transitions in symmetric and dominant fission modes, and multipole moments of fission fragments

2020 ◽  
Vol 242 ◽  
pp. 03004
Author(s):  
Satoshi Chiba ◽  
Mark D. Usang ◽  
Chikako Ishizuka ◽  
Fedir Ivanyuk ◽  
Zhang Xuan
Keyword(s):  
Kinetic Energy ◽  
Total Kinetic Energy ◽  
Multipole Moments ◽  
Energy Distributions ◽  
Langevin Model ◽  
Fragment Mass ◽  
Fission Fragments ◽  
Kinetic Energy Distributions

Systematic and anomalous trends in fragment mass and TKE (total kinetic energy) distributions are investigated in terms of 4D Langevin model developed at Tokyo Tech. We have found that correlated transitions in symmetric components and dominant modes (symmetric v.s. asymmetric) can explain the prominent systematic and anomalous features of fission observables. We have also elucidated that interplay between spherical and deformed magicity at A=132 and A=142 to 144 is important in both observables.

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