TY  - JOUR
AU  - Catford, W. N. et al
AU  - Caballero, L.
AU  - Rubio, B.
PY  - 2010
DA  - 2010//
TI  - Migration of Nuclear Shell Gaps Studied in the d(Ne-24, p gamma)Ne-25 Reaction
T2  - Phys. Rev. Lett.
JO  - Physical Review Letters
SP  - 192501
EP  - 4pp
VL  - 104
IS  - 19
PB  - Amer Physical Soc
AB  - 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.
SN  - 0031-9007
UR  - http://arxiv.org/abs/1004.1556
UR  - https://doi.org/10.1103/PhysRevLett.104.192501
DO  - 10.1103/PhysRevLett.104.192501
LA  - English
N1  - ISI:000277699600014
ID  - Catford_etal2010
ER  -