Level structure of the odd mass Pr isotopes. III. Levels of [sup 147]Pr[sub 88] populated in the beta decay of 56-s [sup 147]Ce

Journal Article · Fri Oct 01 04:00:00 EDT 1993 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.48.1579· OSTI ID:6040383

Mantica, P F ^[1]; Robertson, J D; Baum, E M; Walters, W B ^[2]

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1. Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742 (United States) UNISOR, Oak Ridge Institute for Science Education, Oak Ridge, Tennessee 37831 (United States)
2. Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742 (United States)

The structure of [sup 147]Pr has been investigated by performing measurements of [gamma]-ray and conversion-electron singles and [gamma][gamma] coincidence spectra of mass separated sources of 56-s [sup 147]Ce. The proposed level scheme extends the known structure of [sup 147]Pr to an energy of 2.2 MeV and includes several levels below 1.2 MeV that have not been identified in previous decay studies of [sup 147]Ce. Measurement of the conversion coefficients for several transitions has led to the assignment of negative parity to the levels at 362, 452, 467, and 608 keV in [sup 147]Pr, which show properties similar to low-energy negative-parity states identified in [sup 145]Pr[sub 86], [sup 145]La[sub 88], and [sup 149]Pm[sub 88]. The presence of low-energy negative-parity states suggests that configurations having significantly different deformation, related to the highly deformed region above [ital N]=90 and/or to the reflection asymmetric region identified around [sup 145]Ba, may manifest themselves at low energy in these nuclides.

• DOE Contract Number: FG05-88ER40418; AC05-76OR00033
• OSTI ID: 6040383
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 48:4; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663120 -- Nuclear Structure Models & Methods-- (1992-)
663210 -- Ground-State Radioactivity-- (1992-)
663220* -- Electromagnetic Transitions-- (1992-)
663560 -- Nuclear Mass Ranges-- A=90-149-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY
BETA-MINUS DECAY RADIOISOTOPES
CERIUM 147
CERIUM ISOTOPES
COINCIDENCE METHODS
COLLECTIVE EXCITATIONS
CONVERSION
COUNTING TECHNIQUES
DECAY
DEFORMATION
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EVEN-ODD NUCLEI
EXCITATION
GAMMA SPECTROSCOPY
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION
ISOTOPES
MINUTES LIVING RADIOISOTOPES
NUCLEAR DECAY
NUCLEAR DEFORMATION
NUCLEI
ODD-EVEN NUCLEI
PARITY
PARTICLE PROPERTIES
PRASEODYMIUM 147
PRASEODYMIUM ISOTOPES
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
SECONDS LIVING RADIOISOTOPES
SPECTROSCOPY