Experimental and theoretical study of the nuclear structure of [sup 223]Fr

Journal Article · Fri Mar 31 23:00:00 EST 1995 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.51.1708· OSTI ID:6546208

Sheline, R K ^[1]; Liang, C F; Paris, P ^[2]; Kvasil, J; Nosek, D ^[3]

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1. Chemistry and Physics Departments, Florida State University, Tallahassee, Florida 32306 (United States)
2. Centre de Spectrometrie Nucleaire et de Spectrometrie de Masse, IN2P3, Centre National de la Recherche Scientifique, Batiment 104, 91405, Campus Orsay (France)
3. Department of Nuclear Physics, Charles University, V Holesovickach 2, 18000 Prague 8 (Czech Republic)

The experimental level structure of [sup 223]Fr has been studied using the 1.4% alpha decay of 21.8 yr [sup 227]Ac and subsequent gamma rays to extend the level scheme recently observed following the [beta][sup [minus]] decay of [sup 223]Rn. The level structure of [sup 223]Fr was also studied theoretically by using the quasiparticle model of Soloviev with octupole degrees of freedom. Both experimentally and theoretically there is strong evidence that [sup 223]Fr is reflection asymmetric. The theoretical study of microscopic structure of several of the positive-parity bands also indicates the presence of important Nilsson configurations arising from the shell below. The comparison of the level structures of [sup 223]Fr, [sup 221]Fr, and [sup 219]Fr tends to elaborate the mechanism by which the octupole-modified Nilsson orbitals collapse into the more degenerate shell model states as the mass number decreases.

• OSTI ID: 6546208
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 51:4; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

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663590 -- Nuclear Mass Ranges-- A=220 & Above-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ACTINIUM 227
ACTINIUM ISOTOPES
ALKALI METAL ISOTOPES
ALPHA DECAY
ALPHA DECAY RADIOISOTOPES
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY
BETA-MINUS DECAY RADIOISOTOPES
DECAY
ELECTROMAGNETIC RADIATION
ENERGY LEVELS
EVEN-ODD NUCLEI
FRANCIUM 219
FRANCIUM 221
FRANCIUM 223
FRANCIUM ISOTOPES
GAMMA RADIATION
HEAVY NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
IONIZING RADIATIONS
ISOTOPES
MASS NUMBER
MATHEMATICAL MODELS
MILLISEC LIVING RADIOISOTOPES
MINUTES LIVING RADIOISOTOPES
MULTIPOLES
NUCLEAR DECAY
NUCLEAR MODELS
NUCLEAR STRUCTURE
NUCLEI
OCTUPOLES
ODD-EVEN NUCLEI
RADIATIONS
RADIOISOTOPES
RADON 223
RADON ISOTOPES
SECONDS LIVING RADIOISOTOPES
SHELL MODELS
YEARS LIVING RADIOISOTOPES