Shell and Shapes in the N = 28 Isotones

Journal Article · Tue Jun 01 04:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3455946· OSTI ID:21362117

Caceres, L; Force, C; Grevy, S; Sorlin, O ^[1]; Dombradi, Zs; Sohler, D ^[2]; Gaudefroy, L ^[3]; Nowacki, F ^[4]

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1. GANIL, CEA/DSM-CNRS/IN2P3, BP5027, F-14076 Caen Cedex (France)
2. Institute of Nuclear Research, H-4001 Debrecen, Pf. 51 (Hungary)
3. CEA, DAM, DIF, F-91297 Arpajon (France)
4. IReS, IN2P3-CNRS, Universite Louis Pasteur, BP 28, F-67037 Strasbourg Cedex (France)

New experimental results on {sup 43}S and {sup 44}S reveal that these nuclei are located in a transitional region of shape coexistence between the spherical {sup 48}Ca and the oblate {sup 42}Si. The origin of the deformation is discussed in terms of the evolution of the single particle energy levels leading to the compression of the energy difference of the orbitals in the sd and pf shells for protons and neutrons, respectively. Therefore, due to quadrupole excitations across the Z = 14 and N = 28 gaps, the intruder configuration in the neutron rich S isotopes became the ground state.

• OSTI ID: 21362117
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1238; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALINE EARTH ISOTOPES
BARYONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CALCIUM 48
CALCIUM ISOTOPES
CONFIGURATION
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
EXCITATION
FERMIONS
GROUND STATES
HADRONS
INTERMEDIATE MASS NUCLEI
ISOTONIC NUCLEI
ISOTOPES
MATHEMATICAL MODELS
NEUTRONS
NUCLEAR MODELS
NUCLEI
NUCLEONS
PROBABILITY
PROTONS
RADIOISOTOPES
SHELL MODELS
SILICON 42
SILICON ISOTOPES
SPHERICAL CONFIGURATION
STABLE ISOTOPES
SULFUR 43
SULFUR 44
SULFUR ISOTOPES