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

Nuclear Structure and Nuclear Astrophysi

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

2 Scopus citations

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
State	Published - Feb 2021

Funding

The authors wish to acknowledge the excellent work of the Physics Support group of the ATLAS Facility at Argonne National Laboratory. This material is based upon work supported by the Australian Research Council Discovery Project 120104176 (ANU), the US Department of Energy, Office of Science, Office of Nuclear Physics under Grants No. DE-FG02-94ER40848 (UML), No. DEFG02-97ER41041 (UNC), and No. DE-FG02-97ER41033 (TUNL), and Contract No. DE-AC02-06CH11357 (ANL), the National Nuclear Security Administration, Office of Defense Nuclear Nonproliferation R&D (NA-22) and NSERC (Canada) under Contract No. SAPPJ-2015-00034. This research used resources of ANL's ATLAS facility, which is a DOE Office of Science User Facility. Figure in this article was created using the LevelScheme scientific figure preparation system .

Access to Document

10.1103/PhysRevC.103.024323

Cite this

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{68a85c8503d2438bb16fda8a0d4317fc,

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",

}

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 - https://www.scopus.com/pages/publications/85102057884

U2 - 10.1103/PhysRevC.103.024323

DO - 10.1103/PhysRevC.103.024323

M3 - Article

AN - SCOPUS:85102057884

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

Abstract

Funding

Access to Document

Other files and links

Fingerprint

Cite this