Microscopic investigation of the. cap alpha. +/sup 18/O system in a three-cluster model

Journal Article · Tue Nov 01 04:00:00 EST 1988 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.38.2397· OSTI ID:6740203

Descouvemont, P

The /sup 22/Ne spectrum is investigated with microscopic wave functions defined in the generator-coordinate formalism. This nucleus is described in a three-cluster model, involving an /sup 16/O core surrounded by a dineutron and an ..cap alpha.. particle. The /sup 18/O cluster is projected out on the 0/sup +/ and 2/sup +/ states. We propose a band structure of /sup 22/Ne with experimental candidates. The model suggests the existence of a 0/sup +/ band presenting a marked ..cap alpha..+/sup 18/O cluster structure. We present the ..cap alpha..+/sup 18/O(0/sup +/,2/sup +/) collision matrices, and discuss the resonance properties in the /sup 18/O(..cap alpha..,..cap alpha..)/sup 18/O scattering. Electromagnetic transition probabilities in the /sup 22/Ne nucleus are calculated. From the theoretical Coulomb shifts between the mirror /sup 22/Ne and /sup 22/Mg nuclei, we suggest spin assignments for different /sup 22/Mg states. The /sup 18/O(..cap alpha..,..gamma..)/sup 22/Ne capture cross section is calculated, and is used for determining microscopically the nonresonant reaction rate.

• Research Organization: Physique Theorique et Mathematique, Universite Libre de Bruxelles, Brussels, Belgium
• OSTI ID: 6740203
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 38:5; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

653001* -- Nuclear Theory-- Nuclear Structure
Moments
Spin
& Models
653003 -- Nuclear Theory-- Nuclear Reactions & Scattering
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALINE EARTH ISOTOPES
ALPHA REACTIONS
ANGULAR MOMENTUM
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CAPTURE
CHARGED-PARTICLE REACTIONS
CLUSTER MODEL
ELASTIC SCATTERING
ENERGY LEVELS
EVEN-EVEN NUCLEI
FUNCTIONS
GENERATOR-COORDINATE METHOD
INELASTIC SCATTERING
ISOTOPES
LIGHT NUCLEI
MAGNESIUM 22
MAGNESIUM ISOTOPES
MATHEMATICAL MODELS
MIRROR NUCLEI
NEON 20
NEON ISOTOPES
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
OXYGEN 18 TARGET
PARITY
PARTICLE PROPERTIES
RADIOISOTOPES
RESONANCE SCATTERING
SCATTERING
SECONDS LIVING RADIOISOTOPES
SPIN
STABLE ISOTOPES
TARGETS
WAVE FUNCTIONS