Ground-state and decay properties of neutron-rich Nb 106

A. J. Mitchell; R. Orford; G. J. Lane; C. J. Lister; P. Copp; J. A. Clark; G. Savard; J. M. Allmond; A. D. Ayangeakaa; S. Bottoni; M. P. Carpenter; P. Chowdhury; D. A. Gorelov; R. V.F. Janssens; F. G. Kondev; U. Patel; D. Seweryniak; M. L. Smith; Y. Y. Zhong; S. Zhu

doi:10.1103/PhysRevC.103.024323

Ground-state and decay properties of neutron-rich Nb 106

A. J. Mitchell^*, R. Orford, G. J. Lane, C. J. Lister, P. Copp, J. A. Clark, G. Savard, J. M. Allmond, A. D. Ayangeakaa, S. Bottoni, M. P. Carpenter, P. Chowdhury, D. A. Gorelov, R. V.F. Janssens, F. G. Kondev, U. Patel, D. Seweryniak, M. L. Smith, Y. Y. Zhong, S. Zhu

^*Corresponding author for this work

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

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Abstract

The ground-state properties of neutron-rich Nb106 and its β decay into Mo106 have been studied using the CARIBU radioactive-ion-beam facility at Argonne National Laboratory. Niobium-106 ions were extracted from a Cf252 fission source and mass separated before being delivered as low-energy beams to the Canadian Penning Trap, as well as the X-Array and SATURN β-decay-spectroscopy station. The measured Nb106 ground-state mass excess of -66202.0(13) keV is consistent with a recent measurement but has three times better precision; this work also rules out the existence of a second long-lived, β-decaying state in Nb106 above 5 keV in excitation energy. The decay half-life of Nb106 was measured to be 1.097(21) s, which is 8% longer than the adopted value. The level scheme of the decay progeny, Mo106, has been expanded up to ≈4MeV. The distribution of decay strength and considerable population of excited states in Mo106 of J≥3 emphasizes the need to revise the adopted Jπ=1- ground-state spin-parity assignment of Nb106; it is more likely to be J≥3.

Original language	English
Article number	024323
Journal	Physical Review C
Volume	103
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevC.103.024323
Publication status	Published - Feb 2021

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Mitchell, A. J., Orford, R., Lane, G. J., Lister, C. J., Copp, P., Clark, J. A., Savard, G., Allmond, J. M., Ayangeakaa, A. D., Bottoni, S., Carpenter, M. P., Chowdhury, P., Gorelov, D. A., Janssens, R. V. F., Kondev, F. G., Patel, U., Seweryniak, D., Smith, M. L., Zhong, Y. Y., & Zhu, S. (2021). Ground-state and decay properties of neutron-rich Nb 106. Physical Review C, 103(2), Article 024323. https://doi.org/10.1103/PhysRevC.103.024323

@article{bfdda375090b45518492a6b03df23882,

title = "Ground-state and decay properties of neutron-rich Nb 106",

abstract = "The ground-state properties of neutron-rich Nb106 and its β decay into Mo106 have been studied using the CARIBU radioactive-ion-beam facility at Argonne National Laboratory. Niobium-106 ions were extracted from a Cf252 fission source and mass separated before being delivered as low-energy beams to the Canadian Penning Trap, as well as the X-Array and SATURN β-decay-spectroscopy station. The measured Nb106 ground-state mass excess of -66202.0(13) keV is consistent with a recent measurement but has three times better precision; this work also rules out the existence of a second long-lived, β-decaying state in Nb106 above 5 keV in excitation energy. The decay half-life of Nb106 was measured to be 1.097(21) s, which is 8% longer than the adopted value. The level scheme of the decay progeny, Mo106, has been expanded up to ≈4MeV. The distribution of decay strength and considerable population of excited states in Mo106 of J≥3 emphasizes the need to revise the adopted Jπ=1- ground-state spin-parity assignment of Nb106; it is more likely to be J≥3.",

author = "Mitchell, {A. J.} and R. Orford and Lane, {G. J.} and Lister, {C. J.} and P. Copp and Clark, {J. A.} and G. Savard and Allmond, {J. M.} and Ayangeakaa, {A. D.} and S. Bottoni and Carpenter, {M. P.} and P. Chowdhury and Gorelov, {D. A.} and Janssens, {R. V.F.} and Kondev, {F. G.} and U. Patel and D. Seweryniak and Smith, {M. L.} and Zhong, {Y. Y.} and S. Zhu",

note = "Publisher Copyright: {\textcopyright} 2021 American Physical Society.",

year = "2021",

month = feb,

doi = "10.1103/PhysRevC.103.024323",

language = "English",

volume = "103",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "2",

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Mitchell, AJ, Orford, R, Lane, GJ, Lister, CJ, Copp, P, Clark, JA, Savard, G, Allmond, JM, Ayangeakaa, AD, Bottoni, S, Carpenter, MP, Chowdhury, P, Gorelov, DA, Janssens, RVF, Kondev, FG, Patel, U, Seweryniak, D, Smith, ML, Zhong, YY & Zhu, S 2021, 'Ground-state and decay properties of neutron-rich Nb 106', Physical Review C, vol. 103, no. 2, 024323. https://doi.org/10.1103/PhysRevC.103.024323

TY - JOUR

T1 - Ground-state and decay properties of neutron-rich Nb 106

AU - Mitchell, A. J.

AU - Orford, R.

AU - Lane, G. J.

AU - Lister, C. J.

AU - Copp, P.

AU - Clark, J. A.

AU - Savard, G.

AU - Allmond, J. M.

AU - Ayangeakaa, A. D.

AU - Bottoni, S.

AU - Carpenter, M. P.

AU - Chowdhury, P.

AU - Gorelov, D. A.

AU - Janssens, R. V.F.

AU - Kondev, F. G.

AU - Patel, U.

AU - Seweryniak, D.

AU - Smith, M. L.

AU - Zhong, Y. Y.

AU - Zhu, S.

PY - 2021/2

Y1 - 2021/2

N2 - The ground-state properties of neutron-rich Nb106 and its β decay into Mo106 have been studied using the CARIBU radioactive-ion-beam facility at Argonne National Laboratory. Niobium-106 ions were extracted from a Cf252 fission source and mass separated before being delivered as low-energy beams to the Canadian Penning Trap, as well as the X-Array and SATURN β-decay-spectroscopy station. The measured Nb106 ground-state mass excess of -66202.0(13) keV is consistent with a recent measurement but has three times better precision; this work also rules out the existence of a second long-lived, β-decaying state in Nb106 above 5 keV in excitation energy. The decay half-life of Nb106 was measured to be 1.097(21) s, which is 8% longer than the adopted value. The level scheme of the decay progeny, Mo106, has been expanded up to ≈4MeV. The distribution of decay strength and considerable population of excited states in Mo106 of J≥3 emphasizes the need to revise the adopted Jπ=1- ground-state spin-parity assignment of Nb106; it is more likely to be J≥3.

AB - The ground-state properties of neutron-rich Nb106 and its β decay into Mo106 have been studied using the CARIBU radioactive-ion-beam facility at Argonne National Laboratory. Niobium-106 ions were extracted from a Cf252 fission source and mass separated before being delivered as low-energy beams to the Canadian Penning Trap, as well as the X-Array and SATURN β-decay-spectroscopy station. The measured Nb106 ground-state mass excess of -66202.0(13) keV is consistent with a recent measurement but has three times better precision; this work also rules out the existence of a second long-lived, β-decaying state in Nb106 above 5 keV in excitation energy. The decay half-life of Nb106 was measured to be 1.097(21) s, which is 8% longer than the adopted value. The level scheme of the decay progeny, Mo106, has been expanded up to ≈4MeV. The distribution of decay strength and considerable population of excited states in Mo106 of J≥3 emphasizes the need to revise the adopted Jπ=1- ground-state spin-parity assignment of Nb106; it is more likely to be J≥3.

UR - http://www.scopus.com/inward/record.url?scp=85102057884&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.103.024323

DO - 10.1103/PhysRevC.103.024323

M3 - Article

SN - 2469-9985

VL - 103

JO - Physical Review C

JF - Physical Review C

IS - 2

M1 - 024323

ER -

Ground-state and decay properties of neutron-rich Nb 106

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