Discovery of the Shape Coexisting 0{sup +} State in {sup 32}Mg by a Two Neutron Transfer Reaction

Journal Article · Fri Dec 17 04:00:00 EST 2010 · Physical Review Letters

DOI:https://doi.org/10.1103/PHYSREVLETT.105.252501· OSTI ID:21554482

Wimmer, K; Kroell, T; Kruecken, R; Bildstein, V; Gernhaeuser, R ^[1]; Bastin, B; Bree, N; Diriken, J; Van Duppen, P; Huyse, M; Patronis, N; Vermaelen, P ^[2]; Voulot, D; Van de Walle, J; Wenander, F ^[3]; Fraile, L M ^[4]; Chapman, R; Hadinia, B; Orlandi, R; Smith, J F ^[5]

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1. Physik Department E12, Technische Universitaet Muenchen, 85748 Garching (Germany)
2. Instituut voor Kern- en Stralingsfysica, Katholieke Universiteit Leuven, 3001 Leuven (Belgium)
3. CERN, 1211 Geneve 23 (Switzerland)
4. Departamento de Fisica Atomica, Molecular y Nuclear, Universidad Complutense, 28049 Madrid (Spain)
5. School of Engineering and Science, University of the West of Scotland, Paisley PA1 2BE, Scotland (United Kingdom)

The ''island of inversion'' nucleus {sup 32}Mg has been studied by a (t, p) two neutron transfer reaction in inverse kinematics at REX-ISOLDE. The shape coexistent excited 0{sup +} state in {sup 32}Mg has been identified by the characteristic angular distribution of the protons of the {Delta}L=0 transfer. The excitation energy of 1058 keV is much lower than predicted by any theoretical model. The low {gamma}-ray intensity observed for the decay of this 0{sup +} state indicates a lifetime of more than 10 ns. Deduced spectroscopic amplitudes are compared with occupation numbers from shell-model calculations.

• OSTI ID: 21554482
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 25 Vol. 105; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALINE EARTH ISOTOPES
AMPLITUDES
ANGULAR DISTRIBUTION
BARYONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
DECAY
DISTRIBUTION
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
EXCITATION
FERMIONS
GAMMA RADIATION
HADRONS
IONIZING RADIATIONS
ISOTOPES
KEV RANGE
LIFETIME
LIGHT NUCLEI
MAGNESIUM 32
MAGNESIUM ISOTOPES
MATHEMATICAL MODELS
NEUTRON TRANSFER
NUCLEAR MODELS
NUCLEI
NUCLEONS
PROTONS
RADIATIONS
RADIOISOTOPES
SHELL MODELS