β decay of neutron-rich Cu 76 and the structure of Zn 76

U. Silwal; J. A. Winger; S. V. Ilyushkin; K. P. Rykaczewski; C. J. Gross; J. C. Batchelder; L. Cartegni; I. G. Darby; R. Grzywacz; A. Korgul; W. Królas; S. N. Liddick; C. Mazzocchi; A. J. Mendez; S. Padgett; M. M. Rajabali; D. P. Siwakoti; D. Shapira; D. W. Stracener; E. F. Zganjar

doi:10.1103/PhysRevC.106.044311

β decay of neutron-rich Cu 76 and the structure of Zn 76

U. Silwal, J. A. Winger, S. V. Ilyushkin, K. P. Rykaczewski, C. J. Gross, J. C. Batchelder, L. Cartegni, I. G. Darby, R. Grzywacz, A. Korgul, W. Królas, S. N. Liddick, C. Mazzocchi, A. J. Mendez, S. Padgett, M. M. Rajabali, D. P. Siwakoti, D. Shapira, D. W. Stracener, E. F. Zganjar

Medical Isotopes and Development

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Abstract

The β decay of Cu76 to the levels of Zn76 was studied at the Holifield Radioactive Ion Beam Facility (HRIBF) at Oak Ridge National Lab (ORNL). A purified Cu76 beam was developed and data were recorded for the decay of the A=76 decay chain using four high-purity germanium (HPGe) clover detectors at the Low-energy Radioactive Ion Beam Spectroscopy Station (LeRIBSS). In this measurement, data on γ-ray emission following β decay, including βγ and γγ coincidences, were collected and γγ spectra were analyzed to identify the statistically significant coincidences. From this analysis, we propose a level scheme for Zn76 which contains a total of 59 energy levels up to 6.0 MeV containing 105 γ rays. We have identified an additional 53 γ rays associated with this decay which could not be place in the decay scheme due to insufficient coincidence information or no energy match to identified levels. No γ rays from states in Zn75 fed in the delayed-neutron branch were observed even though other γ rays in the A=75 decay chain were observed. Spin and parity assignments are proposed for some levels based on comparison to systematics and shell model calculations.

Original language	English
Article number	044311
Journal	Physical Review C
Volume	106
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevC.106.044311
State	Published - Oct 2022

Funding

We would like to acknowledge the Holifield Radioactive Ion Beam Facility (HRIBF) and their staff for assistance during the experiment. The authors would like to acknowledge useful discussions with W. B. Walters and J. H. Hamilton. This research is supported by the Office of Science, U.S. Department of Energy under Grants No. DE-SC00-144448, No. DE-FG02-96ER41009, No. DE-FG02-96ER40983, No. DE-AC05-00OR22725, DE-FG02-96ER40978, No. DE-FG05-88ER40407, and No. DE-SC0016988; by the National Nuclear Security Administration under the Stewardship Science Academic Alliances program through DOE Cooperative Agreement No. DE-FG52-08NA28552; and by the Foundation for Polish Science.

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Silwal, U., Winger, J. A., Ilyushkin, S. V., Rykaczewski, K. P., Gross, C. J., Batchelder, J. C., Cartegni, L., Darby, I. G., Grzywacz, R., Korgul, A., Królas, W., Liddick, S. N., Mazzocchi, C., Mendez, A. J., Padgett, S., Rajabali, M. M., Siwakoti, D. P., Shapira, D., Stracener, D. W., & Zganjar, E. F. (2022). β decay of neutron-rich Cu 76 and the structure of Zn 76. Physical Review C, 106(4), Article 044311. https://doi.org/10.1103/PhysRevC.106.044311

@article{feca237c4e0d446698940eb469bbf3ef,

title = "β decay of neutron-rich Cu 76 and the structure of Zn 76",

abstract = "The β decay of Cu76 to the levels of Zn76 was studied at the Holifield Radioactive Ion Beam Facility (HRIBF) at Oak Ridge National Lab (ORNL). A purified Cu76 beam was developed and data were recorded for the decay of the A=76 decay chain using four high-purity germanium (HPGe) clover detectors at the Low-energy Radioactive Ion Beam Spectroscopy Station (LeRIBSS). In this measurement, data on γ-ray emission following β decay, including βγ and γγ coincidences, were collected and γγ spectra were analyzed to identify the statistically significant coincidences. From this analysis, we propose a level scheme for Zn76 which contains a total of 59 energy levels up to 6.0 MeV containing 105 γ rays. We have identified an additional 53 γ rays associated with this decay which could not be place in the decay scheme due to insufficient coincidence information or no energy match to identified levels. No γ rays from states in Zn75 fed in the delayed-neutron branch were observed even though other γ rays in the A=75 decay chain were observed. Spin and parity assignments are proposed for some levels based on comparison to systematics and shell model calculations.",

author = "U. Silwal and Winger, {J. A.} and Ilyushkin, {S. V.} and Rykaczewski, {K. P.} and Gross, {C. J.} and Batchelder, {J. C.} and L. Cartegni and Darby, {I. G.} and R. Grzywacz and A. Korgul and W. Kr{\'o}las and Liddick, {S. N.} and C. Mazzocchi and Mendez, {A. J.} and S. Padgett and Rajabali, {M. M.} and Siwakoti, {D. P.} and D. Shapira and Stracener, {D. W.} and Zganjar, {E. F.}",

note = "Publisher Copyright: {\textcopyright} 2022 American Physical Society. ",

year = "2022",

month = oct,

doi = "10.1103/PhysRevC.106.044311",

language = "English",

volume = "106",

journal = "Physical Review C",

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Silwal, U, Winger, JA, Ilyushkin, SV, Rykaczewski, KP, Gross, CJ, Batchelder, JC, Cartegni, L, Darby, IG, Grzywacz, R, Korgul, A, Królas, W, Liddick, SN, Mazzocchi, C, Mendez, AJ, Padgett, S, Rajabali, MM, Siwakoti, DP, Shapira, D, Stracener, DW & Zganjar, EF 2022, 'β decay of neutron-rich Cu 76 and the structure of Zn 76', Physical Review C, vol. 106, no. 4, 044311. https://doi.org/10.1103/PhysRevC.106.044311

TY - JOUR

T1 - β decay of neutron-rich Cu 76 and the structure of Zn 76

AU - Silwal, U.

AU - Winger, J. A.

AU - Ilyushkin, S. V.

AU - Rykaczewski, K. P.

AU - Gross, C. J.

AU - Batchelder, J. C.

AU - Cartegni, L.

AU - Darby, I. G.

AU - Grzywacz, R.

AU - Korgul, A.

AU - Królas, W.

AU - Liddick, S. N.

AU - Mazzocchi, C.

AU - Mendez, A. J.

AU - Padgett, S.

AU - Rajabali, M. M.

AU - Siwakoti, D. P.

AU - Shapira, D.

AU - Stracener, D. W.

AU - Zganjar, E. F.

PY - 2022/10

Y1 - 2022/10

N2 - The β decay of Cu76 to the levels of Zn76 was studied at the Holifield Radioactive Ion Beam Facility (HRIBF) at Oak Ridge National Lab (ORNL). A purified Cu76 beam was developed and data were recorded for the decay of the A=76 decay chain using four high-purity germanium (HPGe) clover detectors at the Low-energy Radioactive Ion Beam Spectroscopy Station (LeRIBSS). In this measurement, data on γ-ray emission following β decay, including βγ and γγ coincidences, were collected and γγ spectra were analyzed to identify the statistically significant coincidences. From this analysis, we propose a level scheme for Zn76 which contains a total of 59 energy levels up to 6.0 MeV containing 105 γ rays. We have identified an additional 53 γ rays associated with this decay which could not be place in the decay scheme due to insufficient coincidence information or no energy match to identified levels. No γ rays from states in Zn75 fed in the delayed-neutron branch were observed even though other γ rays in the A=75 decay chain were observed. Spin and parity assignments are proposed for some levels based on comparison to systematics and shell model calculations.

AB - The β decay of Cu76 to the levels of Zn76 was studied at the Holifield Radioactive Ion Beam Facility (HRIBF) at Oak Ridge National Lab (ORNL). A purified Cu76 beam was developed and data were recorded for the decay of the A=76 decay chain using four high-purity germanium (HPGe) clover detectors at the Low-energy Radioactive Ion Beam Spectroscopy Station (LeRIBSS). In this measurement, data on γ-ray emission following β decay, including βγ and γγ coincidences, were collected and γγ spectra were analyzed to identify the statistically significant coincidences. From this analysis, we propose a level scheme for Zn76 which contains a total of 59 energy levels up to 6.0 MeV containing 105 γ rays. We have identified an additional 53 γ rays associated with this decay which could not be place in the decay scheme due to insufficient coincidence information or no energy match to identified levels. No γ rays from states in Zn75 fed in the delayed-neutron branch were observed even though other γ rays in the A=75 decay chain were observed. Spin and parity assignments are proposed for some levels based on comparison to systematics and shell model calculations.

UR - http://www.scopus.com/inward/record.url?scp=85141575534&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.106.044311

DO - 10.1103/PhysRevC.106.044311

M3 - Article

AN - SCOPUS:85141575534

SN - 2469-9985

VL - 106

JO - Physical Review C

JF - Physical Review C

IS - 4

M1 - 044311

ER -

β decay of neutron-rich Cu 76 and the structure of Zn 76

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