Nuclear structure of Odd-Odd {sup 82}Y

Journal Article · Fri Oct 01 04:00:00 EDT 1993 · Bulletin of the American Physical Society

OSTI ID:387261

Womble, P C; Doering, J; Glasmacher, T ^[1]

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1. and others

Excited states in {sup 82}Y have been investigated via the {sup 58}Ni({sup 28}Si, 3pn){sup 82}Y and {sup 56}Fe({sup 29}Si, p2n){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 employed to assigned {gamma} rays to {sup 82}Y. The {sup 56}Fe({sup 29}Si p2n){sup 82}Y reaction at 95 MeV was employed to measure {gamma}-{gamma} coincidences with 5 Compton-suppressed Ge detectors. Lifetimes in the ns and ps time 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 -}) and (21{sup +}). In the positive parity yrast band a signature inversion and a phase reversal in the signature splitting at 1 = 10 h were observed. The B(M1) strengths in this band alternate with signature between about 0.1 and 1.0 {mu}{sup 2}{sub N} The B(E2) strengths are in good agreement with those predicted by Hartree-Fock-Bogolyubov calculations. Particle-rotor calculations indicate a prolate or triaxial shape for the positive parity band.

• OSTI ID: 387261
• Report Number(s): CONF-931044--
• Journal Information: Bulletin of the American Physical Society, Journal Name: Bulletin of the American Physical Society Journal Issue: 9 Vol. 38; ISSN 0003-0503; ISSN BAPSA6
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
IRON 56 TARGET
NICKEL 58 TARGET
NUCLEAR STRUCTURE
SILICON 28 REACTIONS
SILICON 29 REACTIONS
YRAST STATES
YTTRIUM 82