Intermediate and weak coupling in /sup 219/Ra

Journal Article · Thu May 01 04:00:00 EDT 1986 · Phys. Rev. C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.33.1855· OSTI ID:5708229

Cottle, P D; Gai, M; Ennis, J F; Bromley, D A; Beausang, C W; Hildingsson, L; Piel, Jr, W F; Fossan, D B; Olness, J W

The level scheme of /sup 219/Ra established via a study of the /sup 208/Pb(/sup 14/C,3n)/sup 219/Ra reaction is presented. The structure of the rotational band based on the ground state is interpreted as reflecting a g(sub 9/2) valence neutron weakly coupled to a spherical /sup 218/Ra core. A non-yrast side band is observed, having tentative (11/2)/sup -/, (15/2)/sup -/, . . . level assignments. An (11/2)/sup -/ state could result from the anomalous J = j-2 intermediate strength coupling of a j(sub 15/2) neutron to the /sup 218/Ra core. The relevance of a weak coupling model to the understanding of high spin (J>j) parity doublets and the surprisingly different experimentally observed level schemes of 2 /sub 88//sup 19/Ra and 2 /sub 89//sup 19/Ac are discussed.

• Research Organization: A.W. Wright Nuclear Structure Laboratory, Yale University, New Haven, Connecticut 06511
• DOE Contract Number: AC02-76ER03074; AC02-76CH00016
• OSTI ID: 5708229
• Journal Information: Phys. Rev. C; (United States), Journal Name: Phys. Rev. C; (United States) Vol. 33:5; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651923* -- Nuclear Properties & Reactions
A=190-219
Experimental-- Energy Levels & Transitions-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ALKALINE EARTH ISOTOPES
ALPHA DECAY RADIOISOTOPES
BARYONS
CARBON 14 REACTIONS
CHARGED-PARTICLE REACTIONS
COMPOUND-NUCLEUS REACTIONS
COUPLING
CROSS SECTIONS
DATA
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY RANGE
EVEN-ODD NUCLEI
EXCITATION FUNCTIONS
EXPERIMENTAL DATA
FERMIONS
FUNCTIONS
GAMMA SPECTRA
HADRONS
HEAVY ION REACTIONS
HEAVY NUCLEI
INFORMATION
INTERMEDIATE COUPLING
ISOTOPES
LEAD 208 TARGET
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 10-100
NEUTRONS
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
NUMERICAL DATA
RADIOISOTOPES
RADIUM 219
RADIUM ISOTOPES
SECONDS LIVING RADIOISOTOPES
SPECTRA
TARGETS
WEAK-COUPLING MODEL