Negative-parity inversion doublet [alpha]-cluster band in [sup 18]O

Journal Article · Sat May 01 00:00:00 EDT 1993 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.47.R1846· OSTI ID:6651623

Reidemeister, G ^[1]; Michel, F ^[2]

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1. Physique Nucleaire Theorique et Physique Mathematique, Code Postal 229, Universite Libre de Bruxelles, B-1050 Bruxelles (Belgium)
2. Faculte des Sciences, Universite de Mons-Hainaut, B-7000 Mons (Belgium)

The [alpha]-cluster structure of the [sup 18]O nucleus is investigated by studying the properties of a global optical model potential which describes [sup 14]C([alpha],[alpha]) elastic scattering at 28, 40, and 54 MeV on the whole angular range. This calculation does not support the existence of the negative-parity molecular dipole states which have been proposed to coexist with the positive-parity four-particle--two-hole (4p-2h) deformed band built on the [ital J][sup [pi]]=0[sup +], [ital E][sub [ital x]]=3.63 MeV state. It suggests that the broad [ital J][sup [pi]]=1[sup [minus]] state recently seen around [ital E][sub [ital x]]=9 MeV in the [beta]-delayed [alpha]-particle spectrum from [sup 18]N is the bandhead of the negative-parity inversion-doublet partner band of the 4p-2h band.

• OSTI ID: 6651623
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Vol. 47:5; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CARBON 14 TARGET
ALPHA REACTIONS
NITROGEN 18
BETA DECAY
OXYGEN 18
CLUSTER MODEL
ANGULAR DISTRIBUTION
DELAYED ALPHA PARTICLES
ELASTIC SCATTERING
MEV RANGE 10-100
NUCLEAR DEFORMATION
NUCLEAR MOLECULES
SHELL MODELS
ALPHA PARTICLES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
DECAY
DEFORMATION
DISTRIBUTION
ENERGY RANGE
EVEN-EVEN NUCLEI
ISOTOPES
LIGHT NUCLEI
MATHEMATICAL MODELS
MEV RANGE
MILLISEC LIVING RADIOISOTOPES
NITROGEN ISOTOPES
NUCLEAR DECAY
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
ODD-ODD NUCLEI
OXYGEN ISOTOPES
RADIOISOTOPES
SCATTERING
STABLE ISOTOPES
TARGETS
663110* - General & Average Properties of Nuclei & Nuclear Energy Levels- (1992-)
663120 - Nuclear Structure Models & Methods- (1992-)
663520 - Nuclear Mass Ranges- A=6-19- (1992-)