β decay of 72Co and microsecond isomers in even-mass neutron-rich nickel isotopes

M. M. Rajabali; R. Grzywacz; S. N. Liddick; C. Mazzocchi; J. C. Batchelder; T. Baumann; C. R. Bingham; I. G. Darby; T. N. Ginter; S. V. Ilyushkin; M. Karny; W. Królas; P. F. Mantica; K. Miernik; M. Pfützner; K. P. Rykaczewski; D. Weisshaar; J. A. Winger

doi:10.1088/0954-3899/41/11/115104

β decay of ⁷²Co and microsecond isomers in even-mass neutron-rich nickel isotopes

M. M. Rajabali
, R. Grzywacz
, S. N. Liddick
, C. Mazzocchi
, J. C. Batchelder
, T. Baumann
, C. R. Bingham
, I. G. Darby
, T. N. Ginter
, S. V. Ilyushkin
, M. Karny
, W. Królas
, P. F. Mantica
, K. Miernik
, M. Pfützner
, K. P. Rykaczewski
, D. Weisshaar
, J. A. Winger

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

9 Scopus citations

Abstract

A new excited state at 2164 keV has been identified in ⁷²Ni with tentative spin and parity of 4⁺ based on comparison to shell model calculations. This level is suggested to be populated via the β-decay of an isomeric state in ⁷²Co, and is postulated to be one of the key states that play a role in the disappearance of isomers in Ni. The known low-energy levels in ^72,74Ni are compared with results of shell model calculations using the NR78 interaction to follow the seniority of the observed states. In addition, the half-life of the 8⁺ isomer in ⁷⁶Ni has been measured as 630(90) ns and the full cascade of transitions from this isomer has been verified experimentally in this work.

Original language	English
Article number	115104
Journal	Journal of Physics G: Nuclear and Particle Physics
Volume	41
Issue number	11
DOIs	https://doi.org/10.1088/0954-3899/41/11/115104
State	Published - Nov 1 2014

Keywords

beta decay
cobalt
gamma spectroscopy
isomer
nickel

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10.1088/0954-3899/41/11/115104

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Rajabali, M. M., Grzywacz, R., Liddick, S. N., Mazzocchi, C., Batchelder, J. C., Baumann, T., Bingham, C. R., Darby, I. G., Ginter, T. N., Ilyushkin, S. V., Karny, M., Królas, W., Mantica, P. F., Miernik, K., Pfützner, M., Rykaczewski, K. P., Weisshaar, D., & Winger, J. A. (2014). β decay of ⁷²Co and microsecond isomers in even-mass neutron-rich nickel isotopes. Journal of Physics G: Nuclear and Particle Physics, 41(11), Article 115104. https://doi.org/10.1088/0954-3899/41/11/115104

@article{1a2455bee7a04491870cb7ea2c450f41,

title = "β decay of 72Co and microsecond isomers in even-mass neutron-rich nickel isotopes",

abstract = "A new excited state at 2164 keV has been identified in 72Ni with tentative spin and parity of 4+ based on comparison to shell model calculations. This level is suggested to be populated via the β-decay of an isomeric state in 72Co, and is postulated to be one of the key states that play a role in the disappearance of isomers in Ni. The known low-energy levels in 72,74Ni are compared with results of shell model calculations using the NR78 interaction to follow the seniority of the observed states. In addition, the half-life of the 8+ isomer in 76Ni has been measured as 630(90) ns and the full cascade of transitions from this isomer has been verified experimentally in this work.",

keywords = "beta decay, cobalt, gamma spectroscopy, isomer, nickel",

author = "Rajabali, \{M. M.\} and R. Grzywacz and Liddick, \{S. N.\} and C. Mazzocchi and Batchelder, \{J. C.\} and T. Baumann and Bingham, \{C. R.\} and Darby, \{I. G.\} and Ginter, \{T. N.\} and Ilyushkin, \{S. V.\} and M. Karny and W. Kr{\'o}las and Mantica, \{P. F.\} and K. Miernik and M. Pf{\"u}tzner and Rykaczewski, \{K. P.\} and D. Weisshaar and Winger, \{J. A.\}",

note = "Publisher Copyright: {\textcopyright} 2014 IOP Publishing Ltd.",

year = "2014",

month = nov,

day = "1",

doi = "10.1088/0954-3899/41/11/115104",

language = "English",

volume = "41",

journal = "Journal of Physics G: Nuclear and Particle Physics",

issn = "0954-3899",

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Rajabali, MM, Grzywacz, R, Liddick, SN, Mazzocchi, C, Batchelder, JC, Baumann, T, Bingham, CR, Darby, IG, Ginter, TN, Ilyushkin, SV, Karny, M, Królas, W, Mantica, PF, Miernik, K, Pfützner, M, Rykaczewski, KP, Weisshaar, D & Winger, JA 2014, 'β decay of ⁷²Co and microsecond isomers in even-mass neutron-rich nickel isotopes', Journal of Physics G: Nuclear and Particle Physics, vol. 41, no. 11, 115104. https://doi.org/10.1088/0954-3899/41/11/115104

TY - JOUR

T1 - β decay of 72Co and microsecond isomers in even-mass neutron-rich nickel isotopes

AU - Rajabali, M. M.

AU - Grzywacz, R.

AU - Liddick, S. N.

AU - Mazzocchi, C.

AU - Batchelder, J. C.

AU - Baumann, T.

AU - Bingham, C. R.

AU - Darby, I. G.

AU - Ginter, T. N.

AU - Ilyushkin, S. V.

AU - Karny, M.

AU - Królas, W.

AU - Mantica, P. F.

AU - Miernik, K.

AU - Pfützner, M.

AU - Rykaczewski, K. P.

AU - Weisshaar, D.

AU - Winger, J. A.

PY - 2014/11/1

Y1 - 2014/11/1

N2 - A new excited state at 2164 keV has been identified in 72Ni with tentative spin and parity of 4+ based on comparison to shell model calculations. This level is suggested to be populated via the β-decay of an isomeric state in 72Co, and is postulated to be one of the key states that play a role in the disappearance of isomers in Ni. The known low-energy levels in 72,74Ni are compared with results of shell model calculations using the NR78 interaction to follow the seniority of the observed states. In addition, the half-life of the 8+ isomer in 76Ni has been measured as 630(90) ns and the full cascade of transitions from this isomer has been verified experimentally in this work.

AB - A new excited state at 2164 keV has been identified in 72Ni with tentative spin and parity of 4+ based on comparison to shell model calculations. This level is suggested to be populated via the β-decay of an isomeric state in 72Co, and is postulated to be one of the key states that play a role in the disappearance of isomers in Ni. The known low-energy levels in 72,74Ni are compared with results of shell model calculations using the NR78 interaction to follow the seniority of the observed states. In addition, the half-life of the 8+ isomer in 76Ni has been measured as 630(90) ns and the full cascade of transitions from this isomer has been verified experimentally in this work.

KW - beta decay

KW - cobalt

KW - gamma spectroscopy

KW - isomer

KW - nickel

UR - https://www.scopus.com/pages/publications/84908032979

U2 - 10.1088/0954-3899/41/11/115104

DO - 10.1088/0954-3899/41/11/115104

M3 - Article

AN - SCOPUS:84908032979

SN - 0954-3899

VL - 41

JO - Journal of Physics G: Nuclear and Particle Physics

JF - Journal of Physics G: Nuclear and Particle Physics

IS - 11

M1 - 115104

ER -

β decay of ⁷²Co and microsecond isomers in even-mass neutron-rich nickel isotopes

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