Microscopic multicluster description of the neutron-rich helium isotopes

Abstract

The neutron halo structure of ${}^6$He and of ${}^8$He is studied in a microscopic three-body and five-body model, respectively. Various cluster arrangements are included to embody a variety of correlations between the clusters. The intercluster wave function is determined with the stochastic variational method. The ${}^6$He and ${}^8$He energies are reproduced with the same effective force very well. The radii and densities are compared with the results of empirical analyses. The calculated difference of the neutron and proton radii exceeds 0.8 fm, confirming the thick neutron skin. The two-neutron removal spectroscopic amplitudes are calculated and used for evaluating the momentum distribution and the $\beta$ decay spectrum, which are sensitive to the halo structure. A fair agreement with experiment is obtained.

Revtex, Submitted to Phys. Rev. C, 11 pages, 8 figures available upon request, ATOMKI-1994-1

References in corpus (2)

• Microscopic multicluster description of neutron-halo nuclei with a stochastic variational method
• Microscopic description of the beta delayed deuteron emission from \bbox{^6}He

Cited by in corpus (24)

• Precise solution of few-body problems with stochastic variational method on correlated Gaussian basis
• Nuclear charge radius of ${}^8$He
• Laser Spectroscopic Determination of the 6He Nuclear Charge Radius
• Structure of the mirror nuclei ${}^9$Be and ${}^9$B in a microscopic cluster model
• ${}^6$He nucleus in halo effective field theory
• Strong dineutron correlation in 8He and 18C
• Dineutron structure in ${}^8$He
• Microscopic optical potentials derived from ab initio translationally invariant nonlocal one-body densities
• Role of the tensor interaction in He isotopes with a tensor-optimized shell model
• Sensitivities of the Proton-Nucleus Elastical Scattering Observables of 6He and 8He at Intermediate Energies
• Three-cluster dynamics within an ab initio framework
• Global Optical Potential for the Elastic Scattering of ${}^6$He at Low Energies
• Analysis of the ${}^6$He $\beta$ decay into the $\alpha +d$ continuum within a three-body model
• Energy Spectrum of Neutron-Rich Helium Isotopes: Complex Made Simple
• Two-neutron transfer reaction mechanisms in ${}^{12}$C(${}^6$He,${}^4$He)${}^{14}$C using a realistic three-body ${}^6$He model
• Two-neutron overlap functions for 6He from a microscopic structure model
• Electric dipole response of ${}^6$He: Halo-neutron and core excitations
• A microscopic three-cluster model with nuclear polarization applied to the resonances of 7Be and the reaction 6Li(p,3He)4He
• Occupation probability of harmonic-oscillator quanta for microscopic cluster-model wave functions
• The n-n-alpha System in a Continuum Faddeev Formulation
• A netron halo in 8He
• Open Shell Effects in a Microscopic Optical Potential for Elastic Scattering of ${}^{6(8)}$He
• The six-nucleon Yakubovsky equations for 6He
• Microscopic description of light unstable nuclei with the stochastic variational method