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Article overview
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Charge radii and neutron correlations in helium halo nuclei | G. Papadimitriou
; A.T. Kruppa
; N. Michel
; W. Nazarewicz
; M. Płoszajczak
; J. Rotureau
; | Date: |
1 Sep 2011 | Abstract: | 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. | Source: | arXiv, 1109.0223 | Services: | Forum | Review | PDF | Favorites |
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