The microscopic theory of fission

Younes, W.; Gogny, D.
October 2009
AIP Conference Proceedings;10/15/2009, Vol. 1175 Issue 1, p3
Conference Proceeding
Fission-fragment properties have been calculated for thermal neutron-induced fission on a 239Pu target, using constrained Hartree-Fock-Bogoliubov calculations with a finite-range effective interaction. A quantitative criterion based on the interaction energy between the nascent fragments is introduced to define the scission configurations. The validity of this criterion is benchmarked against experimental measurements of the kinetic energies and of multiplicities of neutrons emitted by the fragments.


Related Articles

  • Influence of fission fragment excitation energy on prompt fission neutron observables. Lemaire, S.; Talou, P.; Kawano, T.; Chadwick, M. B.; Madland, D. G. // AIP Conference Proceedings;2005, Vol. 798 Issue 1, p213 

    We have implemented a Monte-Carlo simulation of the statistical decay of fission fragments by sequential neutron emission. In this presentation, we report on some numerical results obtained for the spontaneous fission of 252Cf and neutron-induced fission of 235U at 0.53 MeV neutron energy, and...

  • Statistical Model Analysis of (n,p) Cross Sections and Average Energy For Fission Neutron Spectrum. Odsuren, M.; Khuukhenkhuu, G. // AIP Conference Proceedings;6/28/2011, Vol. 1342 Issue 1, p59 

    Investigation of charged particle emission reaction cross sections for fast neutrons is important to both nuclear reactor technology and the understanding of nuclear reaction mechanisms. In particular, the study of (n,p) cross sections is necessary to estimate radiation damage due to hydrogen...

  • Deuteron induced fission at intermediate energies. Rubchenya, V.; Trzaska, W.; Äystö, J.; Bogachev, A.; Knyazheva, G.; Kozulin, E.; Calabretta, L. // AIP Conference Proceedings;10/15/2009, Vol. 1175 Issue 1, p39 

    The results of experimental and theoretical studies of the deuteron-induced fission of 238U at Ed = 65 and 124 MeV are presented. The nucleon spectra measured in the coincidence with fission fragments were analyzed taking into account the direct (d, pf) and (d, nf) channels, pre-compound...

  • The rotation of scissioning nucleus considered trajectory calculations for ternary fission induced by cold polarized neutrons. Guseva, I.; Gusev, Yu. // AIP Conference Proceedings;10/15/2009, Vol. 1175 Issue 1, p355 

    On the base of modified trajectory calculations the shift of angular distribution of α-particles accompanied the reaction 235U(n,f) induced by cold polarized neutrons is evaluated. It was supposed that angular distribution shift is caused by the rotation of nuclear system before scission. The...

  • QGSM development for spallation reactions modeling. Baznat, M. I.; Chigrinov, S. E.; Gudima, K. K. // EPJ Web of Conferences;2012, Issue 38, p17003-p.1 

    The growing interest in spallation neutron sources, accelerator-driven systems, R&D of rare isotope beams, and development of external beam radiation therapy necessitated the improvement of nuclear reaction models for both stand-alone codes for the analysis of nuclear reactions and event...

  • Determination of the 243,246,248Cm thermal neutron induced fission cross sections. Serot, O.; Wagemans, C.; Vermote, S.; Heyse, J.; Soldner, T.; Geltenbort, P. // AIP Conference Proceedings;2005, Vol. 798 Issue 1, p182 

    The minor actinide waste produced in nuclear power plants contains various Cm-isotopes, and transmutation scenarios require improved fission cross section data. The available thermal neutron induced fission cross section data for 243Cm, 246Cm and 248Cm are not very accurate, so new cross section...

  • Comparisons of Neutron Cross Sections and Isotopic Composition Calculations for Fission-Product Evaluations. Do Heon Kim; Choong-Sup Gil; Jonghwa Chang; Yong-Deok Lee // AIP Conference Proceedings;2005, Vol. 769 Issue 1, p511 

    The neutron absorption cross sections for 18 fission products evaluated within the framework of the KAERI (Korea Atomic Energy Research Institute)-BNL (Brookhaven National Laboratory) international collaboration have been compared with ENDF/B-VI.7. Also, the influence of the new evaluations on...

  • FISSION FRAGMENT PROPERTIES AT SCISSION WITH THE GOGNY FORCE. Dubray, N.; Goutte, H.; Berger, J.-F.; Delaroche, J.-P. // International Journal of Modern Physics E: Nuclear Physics;Jan2008, Vol. 17 Issue 1, p72 

    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 238U, 256–260Fm and 226Th actinides. Scission configurations have then been identified in this...

  • THE TRANSPORT COEFFICIENTS OF LARGE SCALE NUCLEAR COLLECTIVE MOTION. Ivanyuk, Fedir // International Journal of Modern Physics E: Nuclear Physics;Jan2008, Vol. 17 Issue 1, p60 

    An approach to the description of slow collective motion at finite excitations based on the linear response theory and locally harmonic approximation is discussed. The method relies on the assumption that the nuclear many-body Hamiltonian can be approximated by a one-body Hamiltonian which in...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics