Microscopic multicluster description of the neutron-rich helium isotopes
- Institute of Nuclear Research of the Hungarian Academy of Sciences, Debrecen, P.O. Box 51, H-4001 (Hungary)
- Physics Department, Niigata University, Niigata 950-21 (Japan)
The neutron halo structure of [sup 6]He and of [sup 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 [sup 6]He and [sup 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.
- OSTI ID:
- 7103875
- Journal Information:
- Physical Review, C (Nuclear Physics); (United States), Vol. 50:1; ISSN 0556-2813
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
HELIUM 6
CLUSTER MODEL
HELIUM 8
BETA DECAY
MANY-BODY PROBLEM
NEUTRON DENSITY
NEUTRON-RICH ISOTOPES
PROTON DENSITY
SPECTROSCOPIC FACTORS
THREE-BODY PROBLEM
WAVE FUNCTIONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
DECAY
EVEN-EVEN NUCLEI
FUNCTIONS
HELIUM ISOTOPES
ISOTOPES
LIGHT NUCLEI
MATHEMATICAL MODELS
MILLISEC LIVING RADIOISOTOPES
NUCLEAR DECAY
NUCLEAR MODELS
NUCLEI
RADIOISOTOPES
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