Ground-state β-decay spectroscopy of Ta 187

M. Mukai; Y. Hirayama; Y. X. Watanabe; H. Watanabe; H. Koura; S. C. Jeong; H. Miyatake; M. Brunet; S. Ishizawa; F. G. Kondev; G. J. Lane; Yu A. Litvinov; T. Niwase; M. Oyaizu; Zs Podolyák; M. Rosenbusch; P. Schury; M. Wada; P. M. Walker

doi:10.1103/PhysRevC.105.034331

Ground-state β-decay spectroscopy of Ta 187

M. Mukai^*, Y. Hirayama, Y. X. Watanabe, H. Watanabe, H. Koura, S. C. Jeong, H. Miyatake, M. Brunet, S. Ishizawa, F. G. Kondev, G. J. Lane, Yu A. Litvinov, T. Niwase, M. Oyaizu, Zs Podolyák, M. Rosenbusch, P. Schury, M. Wada, P. M. Walker

^*Corresponding author for this work

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

6 Citations (Scopus)

Abstract

Beta-decay spectroscopy of the Ta187 ground state was performed at the KEK Isotope Separation System. β-delayed γ rays corresponding to the previously reported in-beam transitions were observed. The β-decay half-life of the Ta187 ground state was determined to be 283(10) s by analyzing a time spectrum of β-γ coincidence events. The β-decay branching ratio and log(ft) values were evaluated for the first time. Based on the newly evaluated log(ft) values of >6.0 and a decay scheme, spin-parity values of Iπ=7/2+ originating from the odd-proton orbit π7/2[404] were assigned with high confidence, which is consistent with the systematics of neighboring odd-A nuclides.

Original language	English
Article number	034331
Journal	Physical Review C
Volume	105
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevC.105.034331
Publication status	Published - Mar 2022

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Mukai, M., Hirayama, Y., Watanabe, Y. X., Watanabe, H., Koura, H., Jeong, S. C., Miyatake, H., Brunet, M., Ishizawa, S., Kondev, F. G., Lane, G. J., Litvinov, Y. A., Niwase, T., Oyaizu, M., Podolyák, Z., Rosenbusch, M., Schury, P., Wada, M., & Walker, P. M. (2022). Ground-state β-decay spectroscopy of Ta 187. Physical Review C, 105(3), Article 034331. https://doi.org/10.1103/PhysRevC.105.034331

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title = "Ground-state β-decay spectroscopy of Ta 187",

abstract = "Beta-decay spectroscopy of the Ta187 ground state was performed at the KEK Isotope Separation System. β-delayed γ rays corresponding to the previously reported in-beam transitions were observed. The β-decay half-life of the Ta187 ground state was determined to be 283(10) s by analyzing a time spectrum of β-γ coincidence events. The β-decay branching ratio and log(ft) values were evaluated for the first time. Based on the newly evaluated log(ft) values of >6.0 and a decay scheme, spin-parity values of Iπ=7/2+ originating from the odd-proton orbit π7/2[404] were assigned with high confidence, which is consistent with the systematics of neighboring odd-A nuclides.",

author = "M. Mukai and Y. Hirayama and Watanabe, {Y. X.} and H. Watanabe and H. Koura and Jeong, {S. C.} and H. Miyatake and M. Brunet and S. Ishizawa and Kondev, {F. G.} and Lane, {G. J.} and Litvinov, {Yu A.} and T. Niwase and M. Oyaizu and Zs Podoly{\'a}k and M. Rosenbusch and P. Schury and M. Wada and Walker, {P. M.}",

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year = "2022",

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doi = "10.1103/PhysRevC.105.034331",

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T1 - Ground-state β-decay spectroscopy of Ta 187

AU - Mukai, M.

AU - Hirayama, Y.

AU - Watanabe, Y. X.

AU - Watanabe, H.

AU - Koura, H.

AU - Jeong, S. C.

AU - Miyatake, H.

AU - Brunet, M.

AU - Ishizawa, S.

AU - Kondev, F. G.

AU - Lane, G. J.

AU - Litvinov, Yu A.

AU - Niwase, T.

AU - Oyaizu, M.

AU - Podolyák, Zs

AU - Rosenbusch, M.

AU - Schury, P.

AU - Wada, M.

AU - Walker, P. M.

PY - 2022/3

Y1 - 2022/3

N2 - Beta-decay spectroscopy of the Ta187 ground state was performed at the KEK Isotope Separation System. β-delayed γ rays corresponding to the previously reported in-beam transitions were observed. The β-decay half-life of the Ta187 ground state was determined to be 283(10) s by analyzing a time spectrum of β-γ coincidence events. The β-decay branching ratio and log(ft) values were evaluated for the first time. Based on the newly evaluated log(ft) values of >6.0 and a decay scheme, spin-parity values of Iπ=7/2+ originating from the odd-proton orbit π7/2[404] were assigned with high confidence, which is consistent with the systematics of neighboring odd-A nuclides.

AB - Beta-decay spectroscopy of the Ta187 ground state was performed at the KEK Isotope Separation System. β-delayed γ rays corresponding to the previously reported in-beam transitions were observed. The β-decay half-life of the Ta187 ground state was determined to be 283(10) s by analyzing a time spectrum of β-γ coincidence events. The β-decay branching ratio and log(ft) values were evaluated for the first time. Based on the newly evaluated log(ft) values of >6.0 and a decay scheme, spin-parity values of Iπ=7/2+ originating from the odd-proton orbit π7/2[404] were assigned with high confidence, which is consistent with the systematics of neighboring odd-A nuclides.

UR - http://www.scopus.com/inward/record.url?scp=85127514819&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.105.034331

DO - 10.1103/PhysRevC.105.034331

M3 - Article

SN - 2469-9985

VL - 105

JO - Physical Review C

JF - Physical Review C

IS - 3

M1 - 034331

ER -

Ground-state β-decay spectroscopy of Ta 187

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