Evidence for a β-decaying 1/2- isomer in Ni71

I. Stefanescu; D. Pauwels; N. Bree; T. E. Cocolios; J. Diriken; S. Franchoo; M. Huyse; O. Ivanov; Y. Kudryavtsev; N. Patronis; J. Van De Walle; P. Van Duppen; W. B. Walters

doi:10.1103/PhysRevC.79.044325

Evidence for a β-decaying 1/2- isomer in Ni71

I. Stefanescu, D. Pauwels, N. Bree, T. E. Cocolios, J. Diriken, S. Franchoo, M. Huyse, O. Ivanov, Y. Kudryavtsev, N. Patronis, J. Van De Walle, P. Van Duppen, W. B. Walters

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

Abstract

We report on the investigation of the population mechanism for the 454-keV level in Cu71. This level was identified for the first time in a recent Coulomb excitation measurement with a radioactive beam of Cu71. The selective nature of the Coulomb-excitation process as well as nuclear-structure considerations constrain the possible spin values for the newly observed state to Iπ=1/2-. A reexamination of the data set obtained in a β-decay study at the Leuven isotope separator on-line mass separator (LISOL) revealed that this state is also populated in the decay of Ni71, most probably by direct feeding from a newly identified 1/2- β-decaying isomer having a T1/2=2.3(3) s. In this paper, we investigate the proposed scenario by reanalyzing the β-γ and γ-γ coincidences obtained in the β-decay study at LISOL. © 2009 The American Physical Society.

Original language	English
Article number	044325
Journal	Physical Review C - Nuclear Physics
Volume	79
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevC.79.044325
Publication status	Published - 1 Apr 2009

Access to Document

10.1103/PhysRevC.79.044325

Cite this

@article{a86d6ece709b4b9495915c2f9ed0a34d,

title = "Evidence for a β-decaying 1/2- isomer in Ni71",

abstract = "We report on the investigation of the population mechanism for the 454-keV level in Cu71. This level was identified for the first time in a recent Coulomb excitation measurement with a radioactive beam of Cu71. The selective nature of the Coulomb-excitation process as well as nuclear-structure considerations constrain the possible spin values for the newly observed state to Iπ=1/2-. A reexamination of the data set obtained in a β-decay study at the Leuven isotope separator on-line mass separator (LISOL) revealed that this state is also populated in the decay of Ni71, most probably by direct feeding from a newly identified 1/2- β-decaying isomer having a T1/2=2.3(3) s. In this paper, we investigate the proposed scenario by reanalyzing the β-γ and γ-γ coincidences obtained in the β-decay study at LISOL. {\textcopyright} 2009 The American Physical Society.",

author = "I. Stefanescu and D. Pauwels and N. Bree and Cocolios, {T. E.} and J. Diriken and S. Franchoo and M. Huyse and O. Ivanov and Y. Kudryavtsev and N. Patronis and {Van De Walle}, J. and {Van Duppen}, P. and Walters, {W. B.}",

year = "2009",

month = apr,

day = "1",

doi = "10.1103/PhysRevC.79.044325",

language = "English",

volume = "79",

journal = "Physical Review C - Nuclear Physics",

issn = "0556-2813",

publisher = "American Physical Society",

number = "4",

}

TY - JOUR

T1 - Evidence for a β-decaying 1/2- isomer in Ni71

AU - Stefanescu, I.

AU - Pauwels, D.

AU - Bree, N.

AU - Cocolios, T. E.

AU - Diriken, J.

AU - Franchoo, S.

AU - Huyse, M.

AU - Ivanov, O.

AU - Kudryavtsev, Y.

AU - Patronis, N.

AU - Van De Walle, J.

AU - Van Duppen, P.

AU - Walters, W. B.

PY - 2009/4/1

Y1 - 2009/4/1

N2 - We report on the investigation of the population mechanism for the 454-keV level in Cu71. This level was identified for the first time in a recent Coulomb excitation measurement with a radioactive beam of Cu71. The selective nature of the Coulomb-excitation process as well as nuclear-structure considerations constrain the possible spin values for the newly observed state to Iπ=1/2-. A reexamination of the data set obtained in a β-decay study at the Leuven isotope separator on-line mass separator (LISOL) revealed that this state is also populated in the decay of Ni71, most probably by direct feeding from a newly identified 1/2- β-decaying isomer having a T1/2=2.3(3) s. In this paper, we investigate the proposed scenario by reanalyzing the β-γ and γ-γ coincidences obtained in the β-decay study at LISOL. © 2009 The American Physical Society.

AB - We report on the investigation of the population mechanism for the 454-keV level in Cu71. This level was identified for the first time in a recent Coulomb excitation measurement with a radioactive beam of Cu71. The selective nature of the Coulomb-excitation process as well as nuclear-structure considerations constrain the possible spin values for the newly observed state to Iπ=1/2-. A reexamination of the data set obtained in a β-decay study at the Leuven isotope separator on-line mass separator (LISOL) revealed that this state is also populated in the decay of Ni71, most probably by direct feeding from a newly identified 1/2- β-decaying isomer having a T1/2=2.3(3) s. In this paper, we investigate the proposed scenario by reanalyzing the β-γ and γ-γ coincidences obtained in the β-decay study at LISOL. © 2009 The American Physical Society.

U2 - 10.1103/PhysRevC.79.044325

DO - 10.1103/PhysRevC.79.044325

M3 - Article

SN - 0556-2813

VL - 79

JO - Physical Review C - Nuclear Physics

JF - Physical Review C - Nuclear Physics

IS - 4

M1 - 044325

ER -

Evidence for a β-decaying 1/2- isomer in Ni71

Abstract

Access to Document

Fingerprint

Cite this