Anatomy of three-body decay II. Decay mechanism and resonance structure

Abstract

We use the hyperspherical adiabatic expansion method to discuss the the two mechanisms of sequential and direct three-body decay. Both short-range and Coulomb interactions are included. Resonances are assumed initially populated by a process independent of the subsequent decay. The lowest adiabatic potentials describe the resonances rather accurately at distances smaller than the outer turning point of the confining barrier. We illustrate with realistic examples of nuclei from neutron (${}^6$He) and proton (${}^{17}$Ne) driplines as well as excited states of beta-stable nuclei (${}^{12}$C).

arXiv commentTo be published in Nuclear Physics A

References in corpus (7)

• On tadpoles and vacuum redefinitions in String Theory
• Computations of Three-Body Continuum Spectra
• Three-body structure of the low-lying ${}^{17}$Ne-states
• Complex scaling of the hyper-spheric coordinates and Faddeev equations
• Dipole excited states in ${}^{11}$Li with complex scaling
• The Three-Body Continuum Coulomb Problem and the 3$\alpha$ Structure of ${}^{12}$C
• Spin-dependent effective interactions for halo nuclei

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• Three-body continuum discretization in a basis of transformed harmonic oscillator states
• Anatomy of three-body decay III. Energy distributions
• Origin of three-body resonances
• Isospin mixing and energy distributions in three-body decay
• Studies of quasiclassical approach applicability to true three-body decays