Shell Model Description of the Decay Out of the Superdeformed Band of {sup 36}Ar

Journal Article · Fri Jul 22 04:00:00 EDT 2005 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.95.042502· OSTI ID:20696473

Caurier, E; Nowacki, F ^[1]; Poves, A ^[2]

---

1. IReS, Bat27, IN2P3-CNRS/Universite Louis Pasteur, BP 28, F-67037 Strasbourg Cedex 2 (France)
2. Departamento de Fisica Teorica, C-XI., Universidad Autonoma de Madrid, E-28049, Madrid (Spain)

Large scale shell model calculations in the valence space spanned by two major oscillator shells (sd and pf) describe simultaneously the superdeformed excited band of {sup 36}Ar and its spherical ground state. We explain the appearance of this superdeformed band at low excitation energy as a consequence of the very large quadrupole correlation energy of the configurations with many particles and many holes (np-nh) relative to the normal filling of the spherical mean field orbits (0p-0h). We study the mechanism of mixing between the different configurations to understand why the superdeformed band survives and how it finally decays into the low-lying spherical states via the indirect mixing of the 0p-0h and 4p-4h configurations.

• OSTI ID: 20696473
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 4 Vol. 95; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ARGON 36
ELECTRON CORRELATION
EXCITATION
GROUND STATES
HOLES
MEAN-FIELD THEORY
NUCLEAR DECAY
ORBITS
OSCILLATORS
QUADRUPOLES
SHELL MODELS
SUPERDEFORMED NUCLEI
VALENCE