Three-body halos. V. Computations of continuum spectra for Borromean nuclei

Abstract

We solve the coordinate space Faddeev equations in the continuum. We employ hyperspherical coordinates and provide analytical expressions allowing easy computation of the effective potentials at distances much larger than the ranges of the interactions where only s-waves in the different Jacobi coordinates couple. Realistic computations are carried out for the Borromean halo nuclei 6He (n+n+α) for Jπ= 0+-, 1+-, 2+- and 11Li (n+n+9Li) for (1/2)+-, (3/2)+-, (5/2)+-. Ground state properties, strength functions, Coulomb dissociation cross sections, phase shifts, complex S-matrix poles are computed and compared to available experimental data. We find enhancements of the strength functions at low energies and a number of low-lying S-matrix poles.

35 pages, 14 figures

References in corpus (2)

• Computations of Three-Body Continuum Spectra
• The Continuum Structure of the Borromean Halo Nucleus 11Li

Cited by in corpus (19)

• Universal few-body physics and cluster formation
• Dipole excited states in ${}^{11}$Li with complex scaling
• Effective Field Theory and the Gamow Shell Model: The 6He Halo Nucleus
• Breakup Reactions of 11Li within a Three-Body Model
• Phase equivalent potentials for three-body halos
• Excitation modes of ${}^{11}$Li at E${}_x\sim$ 1.3 MeV from proton collisions
• Breakup of three particles within the adiabatic expansion method
• Comprehensive calculations of three--body breakup cross sections
• Analytical E1 strength functions of two-neutron halo nuclei: 11-Li and 14-Be
• Analytical E1 strength functions of two-neutron halo nuclei: the 6-He example
• Coulomb and nuclear breakup of three-body halo nuclei
• Four-body DWBA calculations of the Coulomb breakup of 6He
• Cross sections for Coulomb and nuclear breakup of three-body halo nuclei
• Cooper pairs in the Borromean nuclei ${}^6$He and ${}^{11}$Li using continuum single particle level density
• Study of hyperfine anomaly in ${}^9$Be within three-cluster model
• Isospin mixing and energy distributions in three-body decay
• Momentum distributions and reaction mechanisms for breakup of two--neutron halos
• Dineutron clusters in ${}^7$He and ${}^8$He structure
• Three-body structures of low-lying nuclear states of ${}^8$Li