High-spin bandcrossing in 129Ba

A. P. Byrne; K. J Schiffer; G. D. Dracoulis; B. Fabricius; T. Kibédi; A. E. Stuchbery; K. P Lieb

doi:10.1016/0375-9474(92)90080-4

High-spin bandcrossing in ¹²⁹Ba

A. P. Byrne^*, K. J Schiffer, G. D. Dracoulis, B. Fabricius, T. Kibédi, A. E. Stuchbery, K. P Lieb

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

The high-spin structure of ¹²⁹Ba was investigated via in-beam γ-ray spectroscopy allowing many new transitions to be placed in the level scheme. Two isometric states with lifetimes of τ = 23 (2) ns (182 keV level) and 68 (2) ns (2463 keV level) were identified. A high-K 3-quasineutron configuration [ 7 2⁺[404]⊗ 7 2^-[523]⊗ 9 2^-[514]] is proposed for the latter. A discussion of the high-spin structure and the deformation driving effects in ¹²⁹Ba is presented in terms of the cranked shell model. The conclusion reached is that the alignment gains are dominated by h_{11 2} proton pairs.

Original language	English
Pages (from-to)	131-158
Number of pages	28
Journal	Nuclear Physics, Section A
Volume	548
Issue number	1
DOIs	https://doi.org/10.1016/0375-9474(92)90080-4
Publication status	Published - 5 Oct 1992

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title = "High-spin bandcrossing in 129Ba",

abstract = "The high-spin structure of 129Ba was investigated via in-beam γ-ray spectroscopy allowing many new transitions to be placed in the level scheme. Two isometric states with lifetimes of τ = 23 (2) ns (182 keV level) and 68 (2) ns (2463 keV level) were identified. A high-K 3-quasineutron configuration [ 7 2+[404]⊗ 7 2-[523]⊗ 9 2-[514]] is proposed for the latter. A discussion of the high-spin structure and the deformation driving effects in 129Ba is presented in terms of the cranked shell model. The conclusion reached is that the alignment gains are dominated by h 11 2 proton pairs.",

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doi = "10.1016/0375-9474(92)90080-4",

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T1 - High-spin bandcrossing in 129Ba

AU - Byrne, A. P.

AU - Schiffer, K. J

AU - Dracoulis, G. D.

AU - Fabricius, B.

AU - Kibédi, T.

AU - Stuchbery, A. E.

AU - Lieb, K. P

PY - 1992/10/5

Y1 - 1992/10/5

N2 - The high-spin structure of 129Ba was investigated via in-beam γ-ray spectroscopy allowing many new transitions to be placed in the level scheme. Two isometric states with lifetimes of τ = 23 (2) ns (182 keV level) and 68 (2) ns (2463 keV level) were identified. A high-K 3-quasineutron configuration [ 7 2+[404]⊗ 7 2-[523]⊗ 9 2-[514]] is proposed for the latter. A discussion of the high-spin structure and the deformation driving effects in 129Ba is presented in terms of the cranked shell model. The conclusion reached is that the alignment gains are dominated by h 11 2 proton pairs.

AB - The high-spin structure of 129Ba was investigated via in-beam γ-ray spectroscopy allowing many new transitions to be placed in the level scheme. Two isometric states with lifetimes of τ = 23 (2) ns (182 keV level) and 68 (2) ns (2463 keV level) were identified. A high-K 3-quasineutron configuration [ 7 2+[404]⊗ 7 2-[523]⊗ 9 2-[514]] is proposed for the latter. A discussion of the high-spin structure and the deformation driving effects in 129Ba is presented in terms of the cranked shell model. The conclusion reached is that the alignment gains are dominated by h 11 2 proton pairs.

KW - Nuclear reactions

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DO - 10.1016/0375-9474(92)90080-4

M3 - Article

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SN - 0375-9474

VL - 548

SP - 131

EP - 158

JO - Nuclear Physics, Section A

JF - Nuclear Physics, Section A

IS - 1

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High-spin bandcrossing in ¹²⁹Ba

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