Low-lying excitations in Ni 72

A. I. Morales, G. Benzoni, H. Watanabe, S. Nishimura, F. Browne, R. Daido, P. Doornenbal, Y. Fang, G. Lorusso, Z. Patel, S. Rice, L. Sinclair, P. A. Söderström, T. Sumikama, J. Wu, Z. Y. Xu, A. Yagi, R. Yokoyama, H. Baba, R. Avigo & 33 others F. L. Bello Garrote, N. Blasi, A. Bracco, F. Camera, S. Ceruti, F. C L Crespi, G. De Angelis, M. C. Delattre, Zs. S. Dombrádi, A. Gottardo, T. Isobe, I. Kojouharov, N. Kurz, I. Kuti, K. Matsui, B. Melon, D. Mengoni, T. Miyazaki, V. Modamio-Hoyborg, S. Momiyama, D. R. Napoli, M. Niikura, R. Orlandi, H. Sakurai, E. Sahin, D. Sohler, H. Shaffner, R. Taniuchi, J. Taprogge, Zs Vajta, J. J. Valiente-Dobón, O. Wieland, M. Yalcinkaya

Research output: Contribution to journalArticle

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Abstract

Low-lying excited states in Ni72 have been investigated in an in-flight fission experiment at the RIBF facility of the RIKEN Nishina Center. The combination of the state-of-the-art BigRIPS and EURICA setups has allowed for a very accurate study of the β decay from Co72 to Ni72, and has provided first experimental information on the decay sequence Fe72→Co72→Ni72 and on the delayed neutron-emission branch Co73→Ni72. Accordingly, we report nearly 60 previously unobserved γ transitions which deexcite 21 new levels in Ni72. Evidence for the location of the so-sought-after (42+),(62+), and (81+) seniority states is provided. As well, the existence of a low-spin β-decaying isomer in odd-odd neutron-rich Co isotopes is confirmed for mass A=72. The new experimental information is compared to simple shell-model calculations including only neutron excitations across the fpg shells. It is shown that, in general, the calculations reproduce well the observed states.

Original languageEnglish
Article number034328
JournalPhysical Review C - Nuclear Physics
Volume93
Issue number3
DOIs
Publication statusPublished - Mar 22 2016

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neutrons
neutron emission
decay
excitation
fission
isomers
isotopes
flight

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Morales, A. I., Benzoni, G., Watanabe, H., Nishimura, S., Browne, F., Daido, R., ... Yalcinkaya, M. (2016). Low-lying excitations in Ni 72. Physical Review C - Nuclear Physics, 93(3), [034328]. https://doi.org/10.1103/PhysRevC.93.034328

Low-lying excitations in Ni 72. / Morales, A. I.; Benzoni, G.; Watanabe, H.; Nishimura, S.; Browne, F.; Daido, R.; Doornenbal, P.; Fang, Y.; Lorusso, G.; Patel, Z.; Rice, S.; Sinclair, L.; Söderström, P. A.; Sumikama, T.; Wu, J.; Xu, Z. Y.; Yagi, A.; Yokoyama, R.; Baba, H.; Avigo, R.; Bello Garrote, F. L.; Blasi, N.; Bracco, A.; Camera, F.; Ceruti, S.; Crespi, F. C L; De Angelis, G.; Delattre, M. C.; Dombrádi, Zs. S.; Gottardo, A.; Isobe, T.; Kojouharov, I.; Kurz, N.; Kuti, I.; Matsui, K.; Melon, B.; Mengoni, D.; Miyazaki, T.; Modamio-Hoyborg, V.; Momiyama, S.; Napoli, D. R.; Niikura, M.; Orlandi, R.; Sakurai, H.; Sahin, E.; Sohler, D.; Shaffner, H.; Taniuchi, R.; Taprogge, J.; Vajta, Zs; Valiente-Dobón, J. J.; Wieland, O.; Yalcinkaya, M.

In: Physical Review C - Nuclear Physics, Vol. 93, No. 3, 034328, 22.03.2016.

Research output: Contribution to journalArticle

Morales, AI, Benzoni, G, Watanabe, H, Nishimura, S, Browne, F, Daido, R, Doornenbal, P, Fang, Y, Lorusso, G, Patel, Z, Rice, S, Sinclair, L, Söderström, PA, Sumikama, T, Wu, J, Xu, ZY, Yagi, A, Yokoyama, R, Baba, H, Avigo, R, Bello Garrote, FL, Blasi, N, Bracco, A, Camera, F, Ceruti, S, Crespi, FCL, De Angelis, G, Delattre, MC, Dombrádi, ZS, Gottardo, A, Isobe, T, Kojouharov, I, Kurz, N, Kuti, I, Matsui, K, Melon, B, Mengoni, D, Miyazaki, T, Modamio-Hoyborg, V, Momiyama, S, Napoli, DR, Niikura, M, Orlandi, R, Sakurai, H, Sahin, E, Sohler, D, Shaffner, H, Taniuchi, R, Taprogge, J, Vajta, Z, Valiente-Dobón, JJ, Wieland, O & Yalcinkaya, M 2016, 'Low-lying excitations in Ni 72', Physical Review C - Nuclear Physics, vol. 93, no. 3, 034328. https://doi.org/10.1103/PhysRevC.93.034328
Morales AI, Benzoni G, Watanabe H, Nishimura S, Browne F, Daido R et al. Low-lying excitations in Ni 72. Physical Review C - Nuclear Physics. 2016 Mar 22;93(3). 034328. https://doi.org/10.1103/PhysRevC.93.034328
Morales, A. I. ; Benzoni, G. ; Watanabe, H. ; Nishimura, S. ; Browne, F. ; Daido, R. ; Doornenbal, P. ; Fang, Y. ; Lorusso, G. ; Patel, Z. ; Rice, S. ; Sinclair, L. ; Söderström, P. A. ; Sumikama, T. ; Wu, J. ; Xu, Z. Y. ; Yagi, A. ; Yokoyama, R. ; Baba, H. ; Avigo, R. ; Bello Garrote, F. L. ; Blasi, N. ; Bracco, A. ; Camera, F. ; Ceruti, S. ; Crespi, F. C L ; De Angelis, G. ; Delattre, M. C. ; Dombrádi, Zs. S. ; Gottardo, A. ; Isobe, T. ; Kojouharov, I. ; Kurz, N. ; Kuti, I. ; Matsui, K. ; Melon, B. ; Mengoni, D. ; Miyazaki, T. ; Modamio-Hoyborg, V. ; Momiyama, S. ; Napoli, D. R. ; Niikura, M. ; Orlandi, R. ; Sakurai, H. ; Sahin, E. ; Sohler, D. ; Shaffner, H. ; Taniuchi, R. ; Taprogge, J. ; Vajta, Zs ; Valiente-Dobón, J. J. ; Wieland, O. ; Yalcinkaya, M. / Low-lying excitations in Ni 72. In: Physical Review C - Nuclear Physics. 2016 ; Vol. 93, No. 3.
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abstract = "Low-lying excited states in Ni72 have been investigated in an in-flight fission experiment at the RIBF facility of the RIKEN Nishina Center. The combination of the state-of-the-art BigRIPS and EURICA setups has allowed for a very accurate study of the β decay from Co72 to Ni72, and has provided first experimental information on the decay sequence Fe72→Co72→Ni72 and on the delayed neutron-emission branch Co73→Ni72. Accordingly, we report nearly 60 previously unobserved γ transitions which deexcite 21 new levels in Ni72. Evidence for the location of the so-sought-after (42+),(62+), and (81+) seniority states is provided. As well, the existence of a low-spin β-decaying isomer in odd-odd neutron-rich Co isotopes is confirmed for mass A=72. The new experimental information is compared to simple shell-model calculations including only neutron excitations across the fpg shells. It is shown that, in general, the calculations reproduce well the observed states.",
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T1 - Low-lying excitations in Ni 72

AU - Morales, A. I.

AU - Benzoni, G.

AU - Watanabe, H.

AU - Nishimura, S.

AU - Browne, F.

AU - Daido, R.

AU - Doornenbal, P.

AU - Fang, Y.

AU - Lorusso, G.

AU - Patel, Z.

AU - Rice, S.

AU - Sinclair, L.

AU - Söderström, P. A.

AU - Sumikama, T.

AU - Wu, J.

AU - Xu, Z. Y.

AU - Yagi, A.

AU - Yokoyama, R.

AU - Baba, H.

AU - Avigo, R.

AU - Bello Garrote, F. L.

AU - Blasi, N.

AU - Bracco, A.

AU - Camera, F.

AU - Ceruti, S.

AU - Crespi, F. C L

AU - De Angelis, G.

AU - Delattre, M. C.

AU - Dombrádi, Zs. S.

AU - Gottardo, A.

AU - Isobe, T.

AU - Kojouharov, I.

AU - Kurz, N.

AU - Kuti, I.

AU - Matsui, K.

AU - Melon, B.

AU - Mengoni, D.

AU - Miyazaki, T.

AU - Modamio-Hoyborg, V.

AU - Momiyama, S.

AU - Napoli, D. R.

AU - Niikura, M.

AU - Orlandi, R.

AU - Sakurai, H.

AU - Sahin, E.

AU - Sohler, D.

AU - Shaffner, H.

AU - Taniuchi, R.

AU - Taprogge, J.

AU - Vajta, Zs

AU - Valiente-Dobón, J. J.

AU - Wieland, O.

AU - Yalcinkaya, M.

PY - 2016/3/22

Y1 - 2016/3/22

N2 - Low-lying excited states in Ni72 have been investigated in an in-flight fission experiment at the RIBF facility of the RIKEN Nishina Center. The combination of the state-of-the-art BigRIPS and EURICA setups has allowed for a very accurate study of the β decay from Co72 to Ni72, and has provided first experimental information on the decay sequence Fe72→Co72→Ni72 and on the delayed neutron-emission branch Co73→Ni72. Accordingly, we report nearly 60 previously unobserved γ transitions which deexcite 21 new levels in Ni72. Evidence for the location of the so-sought-after (42+),(62+), and (81+) seniority states is provided. As well, the existence of a low-spin β-decaying isomer in odd-odd neutron-rich Co isotopes is confirmed for mass A=72. The new experimental information is compared to simple shell-model calculations including only neutron excitations across the fpg shells. It is shown that, in general, the calculations reproduce well the observed states.

AB - Low-lying excited states in Ni72 have been investigated in an in-flight fission experiment at the RIBF facility of the RIKEN Nishina Center. The combination of the state-of-the-art BigRIPS and EURICA setups has allowed for a very accurate study of the β decay from Co72 to Ni72, and has provided first experimental information on the decay sequence Fe72→Co72→Ni72 and on the delayed neutron-emission branch Co73→Ni72. Accordingly, we report nearly 60 previously unobserved γ transitions which deexcite 21 new levels in Ni72. Evidence for the location of the so-sought-after (42+),(62+), and (81+) seniority states is provided. As well, the existence of a low-spin β-decaying isomer in odd-odd neutron-rich Co isotopes is confirmed for mass A=72. The new experimental information is compared to simple shell-model calculations including only neutron excitations across the fpg shells. It is shown that, in general, the calculations reproduce well the observed states.

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