Fission Fragment Excitation Energy Sharing Beyond Scission

Abstract

A simplified, though realistic, model describing two receding and accelerating fission fragments, due to their mutual Coulomb repulsion, shows that fission fragments share excitation energy well after they ceased to exchange nucleons. This mechanism leads to a lower total kinetic energy of the fission fragments, particularly if the pygmy resonances in the fission fragments are excited. Even though the emphasis here is on fission, similar arguments apply to fragments in heavy-ion reactions.

5 pages, 2 figures

References in corpus (3)

• Brownian shape motion on five-dimensional potential-energy surfaces: Nuclear fission-fragment mass distributions
• Formation and distribution of fragments in the spontaneous fission of 240Pu
• Reorientation in newly formed fission fragments

Cited by in corpus (5)

• Fission fragments intrinsic spins and their correlations
• The angular correlation between the fission fragment intrinsic spins
• Instrumentation for correlated prompt $n$-$\gamma$ emission studies in coincidence with fission fragments
• Fragment Intrinsic Spins and Fragments' Relative Orbital Angular Momentum in Nuclear Fission
• Generalization of the Maier-Leibniz Doppler-Shift Method for Gamma-Ray Correlations in Fission