Transition strengths and new band structures in odd-odd {sup 78}Rb

Journal Article · Sun Sep 01 04:00:00 EDT 1996 · Physical Review, C

DOI:https://doi.org/10.1103/PhysRevC.54.1038· OSTI ID:383317

Kaye, R A; Doering, J; Holcomb, J W; Johns, G D; Johnson, T D; Riley, M A; Sylvan, G N; Womble, P C; Wood, V A; Tabor, S L ^[1]; Saladin, J X ^[2]

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1. Department of Physics, Florida State University, Tallahassee, Florida 32306 (United States)
2. Department of Physics and Astronomy, University of Pittsburgh, Pittsburgh, Pennsylvania 15260 (United States)

High-spin states in {sup 78}Rb were studied using the {sup 54}Fe({sup 28}Si,3{ital pn}) reaction at 120 MeV and the {sup 58}Ni({sup 23}Na,2{ital pn}) reaction at 65 and 70 MeV. Prompt and delayed {gamma}-{gamma} coincidences were measured using the Pitt-FSU detector array. Results from these experiments have led to new levels partly grouped into new bands, new spin-parity assignments, and a rearrangement of the low-lying portion of the level scheme. States were observed up to (19{sup +}) and (15{sup {minus}}) in the lowest energy positive- and negative-parity bands. Spin assignments were based on both directional correlation of oriented nuclei ratios and angular distributions. For some low-lying levels parity assignments were supported by a measurement of the linear polarizations of {gamma} rays. Lifetimes were determined using the Doppler-shift attenuation method and direct timing. A reversal of signature splitting was observed in the yrast band at the 10{sup +} state. Large alternations were seen in the {ital B}({ital M}1) strengths in the yrast band, while the {ital B}({ital E}2) values in the two most strongly populated bands show a considerable collective enhancement. {copyright} {ital 1996 The American Physical Society.}

• OSTI ID: 383317
• Journal Information: Physical Review, C, Journal Name: Physical Review, C Journal Issue: 3 Vol. 54; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
ANGULAR DISTRIBUTION
COINCIDENCE METHODS
CORRELATIONS
DOPPLER EFFECT
E2-TRANSITIONS
GAMMA RADIATION
HIGH SPIN STATES
IRON 54 TARGET
LIFETIME
M1-TRANSITIONS
NICKEL 58 TARGET
ODD-ODD NUCLEI
PARITY
POLARIZATION
RUBIDIUM 78
SILICON 28 REACTIONS
SODIUM 23 REACTIONS
STRENGTH FUNCTIONS
YRAST STATES