Transition strengths and new band structures in odd-odd 78Rb

R. A. Kaye; J. Döring; J. W. Holcomb; G. D. Johns; T. D. Johnson; M. A. Riley; G. N. Sylvan; P. C. Womble; V. A. Wood; S. L. Tabor; J. X. Saladin

doi:10.1103/PhysRevC.54.1038

Transition strengths and new band structures in odd-odd ⁷⁸Rb

R. A. Kaye, J. Döring, J. W. Holcomb, G. D. Johns, T. D. Johnson, M. A. Riley, G. N. Sylvan, P. C. Womble, V. A. Wood, S. L. Tabor, J. X. Saladin

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32 Scopus citations

Abstract

High-spin states in ⁷⁸Rb were studied using the ⁵⁴Fe(²⁸Si,3pn) reaction at 120 MeV and the ⁵⁸Ni(²³Na,2pn) reaction at 65 and 70 MeV. Prompt and delayed γ-γ 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⁺) and (15^-) 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 γ rays. Life-times 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⁺ state. Large alternations were seen in the B (M1) strengths in the yrast band, while the B(E2) values in the two most strongly populated bands show a considerable collective enhancement.

Original language	English
Pages (from-to)	1038-1056
Number of pages	19
Journal	Physical Review C - Nuclear Physics
Volume	54
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevC.54.1038
State	Published - Sep 1996
Externally published	Yes

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title = "Transition strengths and new band structures in odd-odd 78Rb",

abstract = "High-spin states in 78Rb were studied using the 54Fe(28Si,3pn) reaction at 120 MeV and the 58Ni(23Na,2pn) reaction at 65 and 70 MeV. Prompt and delayed γ-γ 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+) and (15-) 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 γ rays. Life-times 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+ state. Large alternations were seen in the B (M1) strengths in the yrast band, while the B(E2) values in the two most strongly populated bands show a considerable collective enhancement.",

author = "Kaye, {R. A.} and J. D{\"o}ring and Holcomb, {J. W.} and Johns, {G. D.} and Johnson, {T. D.} and Riley, {M. A.} and Sylvan, {G. N.} and Womble, {P. C.} and Wood, {V. A.} and Tabor, {S. L.} and Saladin, {J. X.}",

year = "1996",

month = sep,

doi = "10.1103/PhysRevC.54.1038",

language = "English",

volume = "54",

pages = "1038--1056",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

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T1 - Transition strengths and new band structures in odd-odd 78Rb

AU - Kaye, R. A.

AU - Döring, J.

AU - Holcomb, J. W.

AU - Johns, G. D.

AU - Johnson, T. D.

AU - Riley, M. A.

AU - Sylvan, G. N.

AU - Womble, P. C.

AU - Wood, V. A.

AU - Tabor, S. L.

AU - Saladin, J. X.

PY - 1996/9

Y1 - 1996/9

N2 - High-spin states in 78Rb were studied using the 54Fe(28Si,3pn) reaction at 120 MeV and the 58Ni(23Na,2pn) reaction at 65 and 70 MeV. Prompt and delayed γ-γ 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+) and (15-) 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 γ rays. Life-times 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+ state. Large alternations were seen in the B (M1) strengths in the yrast band, while the B(E2) values in the two most strongly populated bands show a considerable collective enhancement.

AB - High-spin states in 78Rb were studied using the 54Fe(28Si,3pn) reaction at 120 MeV and the 58Ni(23Na,2pn) reaction at 65 and 70 MeV. Prompt and delayed γ-γ 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+) and (15-) 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 γ rays. Life-times 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+ state. Large alternations were seen in the B (M1) strengths in the yrast band, while the B(E2) values in the two most strongly populated bands show a considerable collective enhancement.

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DO - 10.1103/PhysRevC.54.1038

M3 - Article

AN - SCOPUS:0030517699

SN - 0556-2813

VL - 54

SP - 1038

EP - 1056

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 3

ER -

Transition strengths and new band structures in odd-odd ⁷⁸Rb

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