%0 Journal Article
%T Migration of Nuclear Shell Gaps Studied in the d(Ne-24, p gamma)Ne-25 Reaction
%A Catford, W. N. et al
%A Caballero, L.
%A Rubio, B.
%J Physical Review Letters
%D 2010
%V 104
%N 19
%I Amer Physical Soc
%@ 0031-9007
%G English
%F Catford_etal2010
%O ISI:000277699600014
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=452), last updated on Wed, 23 Mar 2011 12:18:06 +0000
%X The transfer of neutrons onto Ne-24 has been measured using a reaccelerated radioactive beam of Ne-24 to study the (d, p) reaction in inverse kinematics. The unusual raising of the first 3/2(+) level in Ne-25 and its significance in terms of the migration of the neutron magic number from N = 20 to N = 16 is put on a firm footing by confirmation of this state's identity. The raised 3/2(+) level is observed simultaneously with the intruder negative parity 7/2(-) and 3/2(-) levels, providing evidence for the reduction in the N = 20 gap. The coincident gamma-ray decays allowed the assignment of spins as well as the transferred orbital angular momentum. The excitation energy of the 3/2(+) state shows that the established USD shell model breaks down well within the sd model space and requires a revised treatment of the proton-neutron monopole interaction.
%R 10.1103/PhysRevLett.104.192501
%U http://arxiv.org/abs/1004.1556
%U https://doi.org/10.1103/PhysRevLett.104.192501
%P 192501-4pp