6533b822fe1ef96bd127cdb0
RESEARCH PRODUCT
Charge radii and neutron correlations in helium halo Nuclei
Witold NazarewiczWitold NazarewiczWitold NazarewiczMarek PloszajczakAndrás Tibor KruppaNicolas MichelGeorgios PapadimitriouGeorgios PapadimitriouJimmy Rotureausubject
Nuclear and High Energy PhysicsNuclear Theory[PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th]Nuclear TheoryFOS: Physical scienceschemistry.chemical_element01 natural sciencesNuclear Theory (nucl-th)Charge radius0103 physical sciencesNeutronNuclear Experiment (nucl-ex)Nuclear Experiment010306 general physicsNuclear ExperimentHeliumPhysicsValence (chemistry)ta114010308 nuclear & particles physicsCharge densityRadiusConfiguration interactionchemistryHaloAtomic physicsdescription
Within the complex-energy configuration interaction framework, we study correlations of valence neutrons to explain the behavior of charge radii in the neutron halo nuclei $^{6,8}$He. We find that the experimentally observed decrease of the charge radius between $^6$He and $^8$He is caused by a subtle interplay between three effects: dineutron correlations, a spin-orbit contribution to the charge radius, and a core swelling effect. We demonstrate that two-neutron angular correlations in the $2^+_1$ resonance of $^6$He differ markedly from the ground-state correlations in $^{6,8}$He.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2011-01-01 | Physical Review C |