Search for neutron excitations across the N=20 shell gap in {sup 25-29}Ne

Journal Article · Tue Nov 01 00:00:00 EST 2005 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.72.054316· OSTI ID:20699121

Belleguic, M; Azaiez, F; Sorlin, O; Bourgeois, C; Donzaud, C; Duprat, J; Guillemaud-Mueller, D; Leenhardt, S; Pougheon, F ^[1]; Dombradi, Zs; Sohler, D; Elekes, Z; Timar, J ^[2]; Lopez-Jimenez, M J; Saint-Laurent, M G; Daugas, J M; Oliveira-Santos, F de; Lewitowicz, M; Mittig, W; Roussel-Chomaz, P ^[3]

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1. Institut de Physique Nucleaire, IN2P3-CNRS, F-91406 Orsay Cedex (France)
2. Institute of Nuclear Research of the Hungarian Academy of Sciences, P.O. Box 51, Debrecen, H-4001 (Hungary)
3. GANIL, B.P. 55027, F-14076 Caen Cedex 5 (France); and others

Nuclear structure of the neutron rich {sup 25-29}Ne nuclei has been investigated through the in-beam {gamma}-ray spectroscopy technique using fragmentation reactions of both stable and radioactive beams. Level schemes have been deduced for these Ne isotopes. In order to examine the importance of intruder fp configurations, they are compared to shell model calculations performed either in the restricted sd or in the larger sdpf valence space. The {sup 25,26}Ne and {sup 27}Ne nuclei were found to be in agreement with the sd shell model calculations, whereas {sup 28}Ne exhibits signatures of the intruder fp shell contribution.

• OSTI ID: 20699121
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 72, Issue 5; Other Information: DOI: 10.1103/PhysRevC.72.054316; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ENERGY LEVELS
EXCITATION
GAMMA SPECTRA
GAMMA SPECTROSCOPY
NEON 25
NEON 26
NEON 27
NEON 28
NEON 29
NEUTRONS
NUCLEAR FRAGMENTATION
NUCLEAR STRUCTURE
SHELL MODELS
VALENCE