Nuclear structure of odd-odd [sup 82]Y

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

DOI:https://doi.org/10.1103/PhysRevC.47.2546· OSTI ID:6461604

Womble, P C; Doering, J; Glasmacher, T; Holcomb, J W; Johns, G D; Johnson, T D; Petters, T J; Riley, M A; Wood, V A; Tabor, S L ^[1]; Semmes, P ^[2]

---

1. Department of Physics, Florida State University, Tallahassee, Florida 32306 (United States)
2. Department of Physics, Tennessee Technological University, Cookeville, Tennessee 38505 (United States)

Excited states in [sup 82]Y have been investigated via the [sup 58]Ni([sup 28]Si,3[ital pn])[sup 82]Y and [sup 56]Fe([sup 29]Si,[ital p]2[ital n])[sup 82]Y reactions using beams provided by the Florida State University Tandem-LINAC with energies of 95 to 135 MeV. Particle-[gamma] coincidences with a full-sphere charged-particle detector and an excitation curve were used to assign [gamma] rays to [sup 82]Y. The [sup 56]Fe([sup 29]Si,[ital p]2[ital n])[sup 82]Y reaction at 95 MeV was used to measure [gamma]-[gamma] coincidences with five Compton-suppressed Ge detectors. Lifetimes in the ns and ps ranges were measured using direct timing and the Doppler-shift attenuation method. A level scheme with 39 states was constructed up to tentative spins and parities of (15[sup [minus]]) and (21[sup +]). In the positive-parity yrast band a phase reversal was observed in the signature splitting at [ital I]=10[h bar]. The [ital B]([ital M]1) strengths in this band alternate with signature between about 0.1 and 1.0 [mu][sub [ital N]][sup 2]. The [ital B]([ital E]2) strengths of about 90 Weisskopf units are in good agreement with those predicted by Hartree-Fock-Bogolyubov calculations. Particle-rotor calculations indicate a prolate or triaxial core shape for the positive-parity band.

• DOE Contract Number: FG05-92ER40694
• OSTI ID: 6461604
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 47:6; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663110 -- General & Average Properties of Nuclei & Nuclear Energy Levels-- (1992-)
663450* -- Heavy-Ion-Induced Reactions & Scattering-- (1992-)
663540 -- Nuclear Mass Ranges-- A=39-58-- (1992-)
663550 -- Nuclear Mass Ranges-- A=59-89-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BARYONS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CALCULATION METHODS
CHARGED-PARTICLE REACTIONS
COINCIDENCE METHODS
COINCIDENCE SPECTROMETRY
COLLECTIVE MODEL
COUNTING TECHNIQUES
ELEMENTARY PARTICLES
ENERGY RANGE
FERMIONS
GAMMA SPECTROSCOPY
HADRONS
HARTREE-FOCK METHOD
HEAVY ION REACTIONS
INTERMEDIATE MASS NUCLEI
IRON 56 TARGET
ISOTOPES
LIFETIME
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 10-100
MEV RANGE 100-1000
MINUTES LIVING RADIOISOTOPES
NEUTRONS
NICKEL 58 TARGET
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
NUCLEONS
ODD-ODD NUCLEI
PROTONS
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SILICON 28 REACTIONS
SPECTROSCOPY
TARGETS
YTTRIUM 82
YTTRIUM ISOTOPES