Systematic studies of fission fragment kinetic energy distributions by Langevin simulations

1995 ◽  
Vol 352 (3) ◽  
pp. 321-325 ◽  
Author(s):  
J. Bao ◽  
Y. Zhuo ◽  
X. Wu
Keyword(s):  
Kinetic Energy ◽  
Fission Fragment ◽  
Energy Distributions ◽  
Fragment Kinetic Energy ◽  
Kinetic Energy Distributions

scholarly journals Theoretical investigation of fission fragment kinetic energy distributions in the symmetric mass region for233U(nth,f)

2017 ◽  
Vol 146 ◽  
pp. 04063 ◽  
Author(s):  
Abdelaziz Chebboubi ◽  
Olivier Serot ◽  
Grégoire Kessedjian ◽  
Olivier Litaize ◽  
Aurelien Blanc ◽  
...  
Keyword(s):  
Kinetic Energy ◽  
Theoretical Investigation ◽  
Fission Fragment ◽  
Mass Region ◽  
Energy Distributions ◽  
Fragment Kinetic Energy ◽  
Kinetic Energy Distributions

scholarly journals Fission fragment mass and total kinetic energy distributions of spontaneously fissioning plutonium isotopes

2018 ◽  
Vol 169 ◽  
pp. 00016 ◽  
Author(s):  
K. Pomorski ◽  
B. Nerlo-Pomorska ◽  
J. Bartel ◽  
C. Schmitt
Keyword(s):  
Kinetic Energy ◽  
Fission Fragment ◽  
Potential Energy Surfaces ◽  
Total Kinetic Energy ◽  
Energy Distributions ◽  
Plutonium Isotopes ◽  
Fragment Mass ◽  
Calculated Mass ◽  
Fission Probability ◽  
Kinetic Energy Distributions

The fission-fragment mass and total kinetic energy (TKE) distributions are evaluated in a quantum mechanical framework using elongation, mass asymmetry, neck degree of freedom as the relevant collective parameters in the Fourier shape parametrization recently developed by us. The potential energy surfaces (PES) are calculated within the macroscopic-microscopic model based on the Lublin-Strasbourg Drop (LSD), the Yukawa-folded (YF) single-particle potential and a monopole pairing force. The PES are presented and analysed in detail for even-even Plutonium isotopes with A = 236–246. They reveal deep asymmetric valleys. The fission-fragment mass and TKE distributions are obtained from the ground state of a collective Hamiltonian computed within the Born-Oppenheimer approximation, in the WKB approach by introducing a neck-dependent fission probability. The calculated mass and total kinetic energy distributions are found in good agreement with the data.

scholarly journals Fission modes in fermium isotopes with Brownian shape-motion model

2019 ◽  
Vol 223 ◽  
pp. 01002 ◽  
Author(s):  
Martin Albertsson ◽  
B. Gillis Carlsson ◽  
Thomas Døssing ◽  
Peter Möller ◽  
Jørgen Randrup ◽  
...  
Keyword(s):  
Kinetic Energy ◽  
Excitation Energy ◽  
Fission Fragment ◽  
Total Kinetic Energy ◽  
Motion Model ◽  
Energy Distributions ◽  
Fragment Mass ◽  
Symmetric Fission ◽  
Asymmetric Fission ◽  
Kinetic Energy Distributions

Fission-fragment mass and total-kinetic-energy distributions following fission of the fermium isotopes 256,258,260Fm at low excitation energy have been calculated using the Brownian shape-motion model. A transition from asymmetric fission in 256Fm to symmetric fission in 258Fm is obtained. The total-kinetic-energy distributions for the three isotopes show radically different behaviour due to varying contributions from different fission modes, with a double-humped distribution for 258Fm.

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