Decay widths at the scission point in nuclear fission

Abstract

An outstanding problem in the theory of nuclear fission is understanding the Hamiltonian dynamics at the scission point. Here we apply the Generator Coordinate Method to calculate decay widths for pre-scission configurations into the two-fragment continuum. Transitions that are allowed under diabatic dynamics can have widths up to several MeV. For non-diabatic decays through the pairing interaction, typical widths to a specific final state channel are 2-3 orders of magnitude smaller. The nucleus U-236 is taken as a representative example in the calculations.

To be submitted to Phys. Rev. C

References in corpus (6)

• Mean field and beyond description of nuclear structure with the Gogny force: A review
• Particle-Number Projection and the Density Functional Theory
• Composite-particle decay widths by the generator coordinate method
• Scission Dynamics with K Partitions
• Fluctuations in the ${}^{235}$U(n,f) cross section
• Diabatic scission paths

Cited by in corpus (9)

• Future of Nuclear Fission Theory
• Theory of Nuclear Fission
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• A Pfaffian formulation for matrix elements of three-body operators in multiple quasi-particle configurations
• Generator coordinate method for transition-state dynamics in nuclear fission
• Light element ($Z=1,2$) production from spontaneous ternary fission of ${}^{252}$Cf
• Least action and the maximum-coupling approximations in the theory of spontaneous fission
• Schematic model for induced fission in a configuration-interaction approach
• A microscopic calculation of fission cross sections with the non-equilibrium Green function method