Identification of new transitions and levels in Gd 163 from β -decay studies

C. J. Zachary; N. T. Brewer; J. C. Batchelder; E. Wang; J. H. Hamilton; J. M. Eldridge; B. M. Musangu; A. V. Ramayya; C. J. Gross; K. P. Rykaczewski; R. Grzywacz; A. C. Dai; F. R. Xu; Y. X. Liu; Y. Sun; M. Madurga; D. Miller; D. W. Stracener; C. Jost; E. F. Zganjar; J. A. Winger; M. Karny; S. V. Paulauskas; S. H. Liu; M. Wolińska-Cichocka; S. W. Padgett; A. J. Mendez; K. Miernik; A. Fijałkowska; S. V. Ilyushkin

doi:10.1103/PhysRevC.101.054312

Identification of new transitions and levels in Gd 163 from β -decay studies

C. J. Zachary, N. T. Brewer, J. C. Batchelder, E. Wang, J. H. Hamilton, J. M. Eldridge, B. M. Musangu, A. V. Ramayya, C. J. Gross, K. P. Rykaczewski, R. Grzywacz, A. C. Dai, F. R. Xu, Y. X. Liu, Y. Sun, M. Madurga, D. Miller, D. W. Stracener, C. Jost, E. F. ZganjarJ. A. Winger, M. Karny, S. V. Paulauskas, S. H. Liu, M. Wolińska-Cichocka, S. W. Padgett, A. J. Mendez, K. Miernik, A. Fijałkowska, S. V. Ilyushkin

Medical Isotopes and Development

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Abstract

Background: Neutron-rich nuclei in the mass region around A=160 have been and will continue to be of interest for the study of nuclear structure because of the rapid onset of deformation between 88 and 90 neutrons. The observation of detailed changes in nuclear structures within this mass region has provided and will continue to provide insight into the nuclear force. Purpose: Investigations of γ rays emitted following Eu163 β-decay to Gd163 have been performed for evaluation of the nuclear structure of Gd163. Method: Data were collected at the LeRIBSS station of the Holifield Radioactive Ion Beam Facility at Oak Ridge National Laboratory with an array of four Clover HPGe detectors for γ-rays and two plastic scintillators for β detection. The γ rays were identified as belonging to Gd163 via mass selection and γ-γ-β, x-ray-γ, or γ-γ coincidences. Results: In total 107 new γ-ray transitions were observed in Gd163 from 53 newly identified levels. Conclusions: The structure of Gd163 has been identified for the first time. This structure has been evaluated in comparison to projected shell model, and potential energy surface calculations with good agreement.

Original language	English
Article number	054312
Journal	Physical Review C
Volume	101
Issue number	5
DOIs	https://doi.org/10.1103/PhysRevC.101.054312
State	Published - May 2020

Funding

We would like to acknowledge the Holifield Radioactive Ion Beam Facility and staff for their critical role in obtaining these data. Oak Ridge National Laboratory is supported by the U.S. Department of Energy Office of Nuclear Physics. Participants from Vanderbilt University were supported by the U.S. Department of Energy Grant No. DE-FG05-88ER-40407. The U.S. Department of Energy supported participants from Mississippi State University under Grant No. DE-FG02-96ER41006. Participants from the University of Tennessee were funded by the Office of Nuclear Physics, U.S. Department of Energy under Award No. DE-FG02-96ER40983 and the National Nuclear Security Administration under the Stewardship Science Academic Alliances program through DOE Award No. DE-NA0002132. Support for the work done at Huzhou University and Shanghai Jiao Tong University was provided by the National Natural Science Foundation of China Grants No. U1832139, No. 11947410, and No. U1932206, and by the National Key Program for S&T Research and Development Grant No. 2016YFA0400501. Work at Peking University was supported by the National Natural Science Foundation of China Grants No. 11835001 and No. 11921006.

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Zachary, C. J., Brewer, N. T., Batchelder, J. C., Wang, E., Hamilton, J. H., Eldridge, J. M., Musangu, B. M., Ramayya, A. V., Gross, C. J., Rykaczewski, K. P., Grzywacz, R., Dai, A. C., Xu, F. R., Liu, Y. X., Sun, Y., Madurga, M., Miller, D., Stracener, D. W., Jost, C., ... Ilyushkin, S. V. (2020). Identification of new transitions and levels in Gd 163 from β -decay studies. Physical Review C, 101(5), Article 054312. https://doi.org/10.1103/PhysRevC.101.054312

@article{f1eb66698f6543aa90dcfef6bea4121f,

title = "Identification of new transitions and levels in Gd 163 from β -decay studies",

abstract = "Background: Neutron-rich nuclei in the mass region around A=160 have been and will continue to be of interest for the study of nuclear structure because of the rapid onset of deformation between 88 and 90 neutrons. The observation of detailed changes in nuclear structures within this mass region has provided and will continue to provide insight into the nuclear force. Purpose: Investigations of γ rays emitted following Eu163 β-decay to Gd163 have been performed for evaluation of the nuclear structure of Gd163. Method: Data were collected at the LeRIBSS station of the Holifield Radioactive Ion Beam Facility at Oak Ridge National Laboratory with an array of four Clover HPGe detectors for γ-rays and two plastic scintillators for β detection. The γ rays were identified as belonging to Gd163 via mass selection and γ-γ-β, x-ray-γ, or γ-γ coincidences. Results: In total 107 new γ-ray transitions were observed in Gd163 from 53 newly identified levels. Conclusions: The structure of Gd163 has been identified for the first time. This structure has been evaluated in comparison to projected shell model, and potential energy surface calculations with good agreement.",

author = "Zachary, {C. J.} and Brewer, {N. T.} and Batchelder, {J. C.} and E. Wang and Hamilton, {J. H.} and Eldridge, {J. M.} and Musangu, {B. M.} and Ramayya, {A. V.} and Gross, {C. J.} and Rykaczewski, {K. P.} and R. Grzywacz and Dai, {A. C.} and Xu, {F. R.} and Liu, {Y. X.} and Y. Sun and M. Madurga and D. Miller and Stracener, {D. W.} and C. Jost and Zganjar, {E. F.} and Winger, {J. A.} and M. Karny and Paulauskas, {S. V.} and Liu, {S. H.} and M. Woli{\'n}ska-Cichocka and Padgett, {S. W.} and Mendez, {A. J.} and K. Miernik and A. Fija{\l}kowska and Ilyushkin, {S. V.}",

note = "Publisher Copyright: {\textcopyright} 2020 American Physical Society.",

year = "2020",

month = may,

doi = "10.1103/PhysRevC.101.054312",

language = "English",

volume = "101",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

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Zachary, CJ, Brewer, NT, Batchelder, JC, Wang, E, Hamilton, JH, Eldridge, JM, Musangu, BM, Ramayya, AV, Gross, CJ, Rykaczewski, KP, Grzywacz, R, Dai, AC, Xu, FR, Liu, YX, Sun, Y, Madurga, M, Miller, D, Stracener, DW, Jost, C, Zganjar, EF, Winger, JA, Karny, M, Paulauskas, SV, Liu, SH, Wolińska-Cichocka, M, Padgett, SW, Mendez, AJ, Miernik, K, Fijałkowska, A & Ilyushkin, SV 2020, 'Identification of new transitions and levels in Gd 163 from β -decay studies', Physical Review C, vol. 101, no. 5, 054312. https://doi.org/10.1103/PhysRevC.101.054312

TY - JOUR

T1 - Identification of new transitions and levels in Gd 163 from β -decay studies

AU - Zachary, C. J.

AU - Brewer, N. T.

AU - Batchelder, J. C.

AU - Wang, E.

AU - Hamilton, J. H.

AU - Eldridge, J. M.

AU - Musangu, B. M.

AU - Ramayya, A. V.

AU - Gross, C. J.

AU - Rykaczewski, K. P.

AU - Grzywacz, R.

AU - Dai, A. C.

AU - Xu, F. R.

AU - Liu, Y. X.

AU - Sun, Y.

AU - Madurga, M.

AU - Miller, D.

AU - Stracener, D. W.

AU - Jost, C.

AU - Zganjar, E. F.

AU - Winger, J. A.

AU - Karny, M.

AU - Paulauskas, S. V.

AU - Liu, S. H.

AU - Wolińska-Cichocka, M.

AU - Padgett, S. W.

AU - Mendez, A. J.

AU - Miernik, K.

AU - Fijałkowska, A.

AU - Ilyushkin, S. V.

PY - 2020/5

Y1 - 2020/5

N2 - Background: Neutron-rich nuclei in the mass region around A=160 have been and will continue to be of interest for the study of nuclear structure because of the rapid onset of deformation between 88 and 90 neutrons. The observation of detailed changes in nuclear structures within this mass region has provided and will continue to provide insight into the nuclear force. Purpose: Investigations of γ rays emitted following Eu163 β-decay to Gd163 have been performed for evaluation of the nuclear structure of Gd163. Method: Data were collected at the LeRIBSS station of the Holifield Radioactive Ion Beam Facility at Oak Ridge National Laboratory with an array of four Clover HPGe detectors for γ-rays and two plastic scintillators for β detection. The γ rays were identified as belonging to Gd163 via mass selection and γ-γ-β, x-ray-γ, or γ-γ coincidences. Results: In total 107 new γ-ray transitions were observed in Gd163 from 53 newly identified levels. Conclusions: The structure of Gd163 has been identified for the first time. This structure has been evaluated in comparison to projected shell model, and potential energy surface calculations with good agreement.

AB - Background: Neutron-rich nuclei in the mass region around A=160 have been and will continue to be of interest for the study of nuclear structure because of the rapid onset of deformation between 88 and 90 neutrons. The observation of detailed changes in nuclear structures within this mass region has provided and will continue to provide insight into the nuclear force. Purpose: Investigations of γ rays emitted following Eu163 β-decay to Gd163 have been performed for evaluation of the nuclear structure of Gd163. Method: Data were collected at the LeRIBSS station of the Holifield Radioactive Ion Beam Facility at Oak Ridge National Laboratory with an array of four Clover HPGe detectors for γ-rays and two plastic scintillators for β detection. The γ rays were identified as belonging to Gd163 via mass selection and γ-γ-β, x-ray-γ, or γ-γ coincidences. Results: In total 107 new γ-ray transitions were observed in Gd163 from 53 newly identified levels. Conclusions: The structure of Gd163 has been identified for the first time. This structure has been evaluated in comparison to projected shell model, and potential energy surface calculations with good agreement.

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U2 - 10.1103/PhysRevC.101.054312

DO - 10.1103/PhysRevC.101.054312

M3 - Article

AN - SCOPUS:85085962837

SN - 2469-9985

VL - 101

JO - Physical Review C

JF - Physical Review C

IS - 5

M1 - 054312

ER -

Identification of new transitions and levels in Gd 163 from β -decay studies

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