Beta-gamma spectroscopy of the neutron-rich 150Ba

R. Yokoyama; E. Ideguchi; G. S. Simpson; Mn Tanaka; S. Nishimura; P. Doornenbal; G. Lorusso; P. A. Söderström; T. Sumikama; J. Wu; Z. Y. Xu; N. Aoi; H. Baba; F. L. Bello Garrote; G. Benzoni; F. Browne; R. Daido; Y. Fang; N. Fukuda; A. Gottardo; G. Gey; S. Go; N. Inabe; T. Isobe; D. Kameda; K. Kobayashi; M. Kobayashi; I. Kojouharov; T. Komatsubara; T. Kubo; N. Kurz; I. Kuti; Z. Li; M. Matsushita; S. Michimasa; C. B. Moon; H. Nishibata; I. Nishizuka; A. Odahara; Z. Patel; S. Rice; E. Sahin; H. Sakurai; H. Schaffner; L. Sinclair; H. Suzuki; H. Takeda; J. Taprogge; Zs Vajta; H. Watanabe; A. Yagi; T. Inakura

doi:10.1093/ptep/pty037

Beta-gamma spectroscopy of the neutron-rich ¹⁵⁰Ba

R. Yokoyama, E. Ideguchi, G. S. Simpson, Mn Tanaka, S. Nishimura, P. Doornenbal, G. Lorusso, P. A. Söderström, T. Sumikama, J. Wu, Z. Y. Xu, N. Aoi, H. Baba, F. L. Bello Garrote, G. Benzoni, F. Browne, R. Daido, Y. Fang, N. Fukuda, A. GottardoG. Gey, S. Go, N. Inabe, T. Isobe, D. Kameda, K. Kobayashi, M. Kobayashi, I. Kojouharov, T. Komatsubara, T. Kubo, N. Kurz, I. Kuti, Z. Li, M. Matsushita, S. Michimasa, C. B. Moon, H. Nishibata, I. Nishizuka, A. Odahara, Z. Patel, S. Rice, E. Sahin, H. Sakurai, H. Schaffner, L. Sinclair, H. Suzuki, H. Takeda, J. Taprogge, Zs Vajta, H. Watanabe, A. Yagi, T. Inakura

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

1 Citation (Scopus)

Abstract

Excited states in the neutron-rich nucleus ¹⁵⁰Ba have been observed via β–γ spectroscopy at the Radioactive Isotope Beam Factory, RIKEN Nishina Center. The ¹⁵⁰Ba ions were produced by the in-flight fission of a ²³⁸U beam with an energy of 345 MeV/nucleon. The E(2⁺) energy of ¹⁵⁰Ba was identified at 100 keV, which is the lowest known in the neutron-rich Ba isotopes. A γ-ray peak was also observed at 597 keV. A mean-field calculation with a fully 3D real space was performed and a static octupole deformation was obtained for the Ba isotopes. K^π = 0− and 1− excited states with significant octupole collectivity were newly predicted at around or lower than 1 MeV on the ground state of ¹⁵⁰Ba by a random-phase approximation calculation. The 597 keV γ ray can be interpreted as a negative-parity state, showing that ¹⁵⁰Ba may possess octupole collectivity.

Original language	English
Article number	pty037
Journal	Progress of Theoretical and Experimental Physics
Volume	2018
Issue number	4
DOIs	https://doi.org/10.1093/ptep/pty037
Publication status	Published - Apr 1 2018
Externally published	Yes

All Science Journal Classification (ASJC) codes

Physics and Astronomy(all)

Access to Document

10.1093/ptep/pty037

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Yokoyama, R., Ideguchi, E., Simpson, G. S., Tanaka, M., Nishimura, S., Doornenbal, P., Lorusso, G., Söderström, P. A., Sumikama, T., Wu, J., Xu, Z. Y., Aoi, N., Baba, H., Bello Garrote, F. L., Benzoni, G., Browne, F., Daido, R., Fang, Y., Fukuda, N., ... Inakura, T. (2018). Beta-gamma spectroscopy of the neutron-rich ¹⁵⁰Ba. Progress of Theoretical and Experimental Physics, 2018(4), [pty037]. https://doi.org/10.1093/ptep/pty037

Beta-gamma spectroscopy of the neutron-rich ¹⁵⁰Ba. / Yokoyama, R.; Ideguchi, E.; Simpson, G. S.; Tanaka, Mn; Nishimura, S.; Doornenbal, P.; Lorusso, G.; Söderström, P. A.; Sumikama, T.; Wu, J.; Xu, Z. Y.; Aoi, N.; Baba, H.; Bello Garrote, F. L.; Benzoni, G.; Browne, F.; Daido, R.; Fang, Y.; Fukuda, N.; Gottardo, A.; Gey, G.; Go, S.; Inabe, N.; Isobe, T.; Kameda, D.; Kobayashi, K.; Kobayashi, M.; Kojouharov, I.; Komatsubara, T.; Kubo, T.; Kurz, N.; Kuti, I.; Li, Z.; Matsushita, M.; Michimasa, S.; Moon, C. B.; Nishibata, H.; Nishizuka, I.; Odahara, A.; Patel, Z.; Rice, S.; Sahin, E.; Sakurai, H.; Schaffner, H.; Sinclair, L.; Suzuki, H.; Takeda, H.; Taprogge, J.; Vajta, Zs; Watanabe, H.; Yagi, A.; Inakura, T.

In: Progress of Theoretical and Experimental Physics, Vol. 2018, No. 4, pty037, 01.04.2018.

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

Yokoyama, R, Ideguchi, E, Simpson, GS, Tanaka, M, Nishimura, S, Doornenbal, P, Lorusso, G, Söderström, PA, Sumikama, T, Wu, J, Xu, ZY, Aoi, N, Baba, H, Bello Garrote, FL, Benzoni, G, Browne, F, Daido, R, Fang, Y, Fukuda, N, Gottardo, A, Gey, G, Go, S, Inabe, N, Isobe, T, Kameda, D, Kobayashi, K, Kobayashi, M, Kojouharov, I, Komatsubara, T, Kubo, T, Kurz, N, Kuti, I, Li, Z, Matsushita, M, Michimasa, S, Moon, CB, Nishibata, H, Nishizuka, I, Odahara, A, Patel, Z, Rice, S, Sahin, E, Sakurai, H, Schaffner, H, Sinclair, L, Suzuki, H, Takeda, H, Taprogge, J, Vajta, Z, Watanabe, H, Yagi, A & Inakura, T 2018, 'Beta-gamma spectroscopy of the neutron-rich ¹⁵⁰Ba', Progress of Theoretical and Experimental Physics, vol. 2018, no. 4, pty037. https://doi.org/10.1093/ptep/pty037

Yokoyama, R. ; Ideguchi, E. ; Simpson, G. S. ; Tanaka, Mn ; Nishimura, S. ; Doornenbal, P. ; Lorusso, G. ; Söderström, P. A. ; Sumikama, T. ; Wu, J. ; Xu, Z. Y. ; Aoi, N. ; Baba, H. ; Bello Garrote, F. L. ; Benzoni, G. ; Browne, F. ; Daido, R. ; Fang, Y. ; Fukuda, N. ; Gottardo, A. ; Gey, G. ; Go, S. ; Inabe, N. ; Isobe, T. ; Kameda, D. ; Kobayashi, K. ; Kobayashi, M. ; Kojouharov, I. ; Komatsubara, T. ; Kubo, T. ; Kurz, N. ; Kuti, I. ; Li, Z. ; Matsushita, M. ; Michimasa, S. ; Moon, C. B. ; Nishibata, H. ; Nishizuka, I. ; Odahara, A. ; Patel, Z. ; Rice, S. ; Sahin, E. ; Sakurai, H. ; Schaffner, H. ; Sinclair, L. ; Suzuki, H. ; Takeda, H. ; Taprogge, J. ; Vajta, Zs ; Watanabe, H. ; Yagi, A. ; Inakura, T. / Beta-gamma spectroscopy of the neutron-rich ¹⁵⁰Ba. In: Progress of Theoretical and Experimental Physics. 2018 ; Vol. 2018, No. 4.

@article{9bb1bb1684b647308e89f097df22836b,

title = "Beta-gamma spectroscopy of the neutron-rich 150Ba",

abstract = "Excited states in the neutron-rich nucleus 150Ba have been observed via β–γ spectroscopy at the Radioactive Isotope Beam Factory, RIKEN Nishina Center. The 150Ba ions were produced by the in-flight fission of a 238U beam with an energy of 345 MeV/nucleon. The E(2+) energy of 150Ba was identified at 100 keV, which is the lowest known in the neutron-rich Ba isotopes. A γ-ray peak was also observed at 597 keV. A mean-field calculation with a fully 3D real space was performed and a static octupole deformation was obtained for the Ba isotopes. Kπ = 0− and 1− excited states with significant octupole collectivity were newly predicted at around or lower than 1 MeV on the ground state of 150Ba by a random-phase approximation calculation. The 597 keV γ ray can be interpreted as a negative-parity state, showing that 150Ba may possess octupole collectivity.",

author = "R. Yokoyama and E. Ideguchi and Simpson, {G. S.} and Mn Tanaka and S. Nishimura and P. Doornenbal and G. Lorusso and S{\"o}derstr{\"o}m, {P. A.} and T. Sumikama and J. Wu and Xu, {Z. Y.} and N. Aoi and H. Baba and {Bello Garrote}, {F. L.} and G. Benzoni and F. Browne and R. Daido and Y. Fang and N. Fukuda and A. Gottardo and G. Gey and S. Go and N. Inabe and T. Isobe and D. Kameda and K. Kobayashi and M. Kobayashi and I. Kojouharov and T. Komatsubara and T. Kubo and N. Kurz and I. Kuti and Z. Li and M. Matsushita and S. Michimasa and Moon, {C. B.} and H. Nishibata and I. Nishizuka and A. Odahara and Z. Patel and S. Rice and E. Sahin and H. Sakurai and H. Schaffner and L. Sinclair and H. Suzuki and H. Takeda and J. Taprogge and Zs Vajta and H. Watanabe and A. Yagi and T. Inakura",

note = "Funding Information: We acknowledge financial support from KAKENHI (25247045). This work was carried out at the RIBF operated by RIKEN Nishina Center, RIKEN, and CNS, the University of Tokyo. We acknowledge the EUROBALL Owners Committee for the loan of germanium detectors and the PreSpec Collaboration for the readout electronics of the cluster detectors. Part of the WAS3ABi was supported by the Rare Isotope Science Project, which is funded by the Ministry of Science, ICT and Future Planning (MSIP) and National Research Foundation (NRF) of Korea. This work was supported by the Spanish Ministerio de Ciencia e Innovaci?n under Contract Nos. FPA2009-13377-C02 and FPA2011-29854-C04 and the Hungarian Research Fund (OTKA), Contract No. K100835. R.Y. was supported by the ALPS program of the University of Tokyo and by a JSPS fellowship No. JP15J10788. Funding Information: We acknowledge financial support from KAKENHI (25247045). This work was carried out at the RIBF operated by RIKEN Nishina Center, RIKEN, and CNS, the University of Tokyo. We acknowledge the EUROBALL Owners Committee for the loan of germanium detectors and the PreSpec Collaboration for the readout electronics of the cluster detectors. Part of the WAS3ABi was supported by the Rare Isotope Science Project, which is funded by the Ministry of Science, ICT and Future Planning (MSIP) and National Research Foundation (NRF) of Korea. This work was supported by the Spanish Ministerio de Ciencia e Innovaci{\'o}n under Contract Nos. FPA2009-13377-C02 and FPA2011-29854-C04 and the Hungarian Research Fund (OTKA), Contract No. K100835. R.Y. was supported by the ALPS program of the University of Tokyo and by a JSPS fellowship No. JP15J10788. Publisher Copyright: {\textcopyright} The Author(s) 2018.",

year = "2018",

month = apr,

day = "1",

doi = "10.1093/ptep/pty037",

language = "English",

volume = "2018",

journal = "Progress of Theoretical and Experimental Physics",

issn = "2050-3911",

publisher = "Oxford University Press",

number = "4",

}

TY - JOUR

T1 - Beta-gamma spectroscopy of the neutron-rich 150Ba

AU - Yokoyama, R.

AU - Ideguchi, E.

AU - Simpson, G. S.

AU - Tanaka, Mn

AU - Nishimura, S.

AU - Doornenbal, P.

AU - Lorusso, G.

AU - Söderström, P. A.

AU - Sumikama, T.

AU - Wu, J.

AU - Xu, Z. Y.

AU - Aoi, N.

AU - Baba, H.

AU - Bello Garrote, F. L.

AU - Benzoni, G.

AU - Browne, F.

AU - Daido, R.

AU - Fang, Y.

AU - Fukuda, N.

AU - Gottardo, A.

AU - Gey, G.

AU - Go, S.

AU - Inabe, N.

AU - Isobe, T.

AU - Kameda, D.

AU - Kobayashi, K.

AU - Kobayashi, M.

AU - Kojouharov, I.

AU - Komatsubara, T.

AU - Kubo, T.

AU - Kurz, N.

AU - Kuti, I.

AU - Li, Z.

AU - Matsushita, M.

AU - Michimasa, S.

AU - Moon, C. B.

AU - Nishibata, H.

AU - Nishizuka, I.

AU - Odahara, A.

AU - Patel, Z.

AU - Rice, S.

AU - Sahin, E.

AU - Sakurai, H.

AU - Schaffner, H.

AU - Sinclair, L.

AU - Suzuki, H.

AU - Takeda, H.

AU - Taprogge, J.

AU - Vajta, Zs

AU - Watanabe, H.

AU - Yagi, A.

AU - Inakura, T.

N1 - Funding Information: We acknowledge financial support from KAKENHI (25247045). This work was carried out at the RIBF operated by RIKEN Nishina Center, RIKEN, and CNS, the University of Tokyo. We acknowledge the EUROBALL Owners Committee for the loan of germanium detectors and the PreSpec Collaboration for the readout electronics of the cluster detectors. Part of the WAS3ABi was supported by the Rare Isotope Science Project, which is funded by the Ministry of Science, ICT and Future Planning (MSIP) and National Research Foundation (NRF) of Korea. This work was supported by the Spanish Ministerio de Ciencia e Innovaci?n under Contract Nos. FPA2009-13377-C02 and FPA2011-29854-C04 and the Hungarian Research Fund (OTKA), Contract No. K100835. R.Y. was supported by the ALPS program of the University of Tokyo and by a JSPS fellowship No. JP15J10788. Funding Information: We acknowledge financial support from KAKENHI (25247045). This work was carried out at the RIBF operated by RIKEN Nishina Center, RIKEN, and CNS, the University of Tokyo. We acknowledge the EUROBALL Owners Committee for the loan of germanium detectors and the PreSpec Collaboration for the readout electronics of the cluster detectors. Part of the WAS3ABi was supported by the Rare Isotope Science Project, which is funded by the Ministry of Science, ICT and Future Planning (MSIP) and National Research Foundation (NRF) of Korea. This work was supported by the Spanish Ministerio de Ciencia e Innovación under Contract Nos. FPA2009-13377-C02 and FPA2011-29854-C04 and the Hungarian Research Fund (OTKA), Contract No. K100835. R.Y. was supported by the ALPS program of the University of Tokyo and by a JSPS fellowship No. JP15J10788. Publisher Copyright: © The Author(s) 2018.

PY - 2018/4/1

Y1 - 2018/4/1

N2 - Excited states in the neutron-rich nucleus 150Ba have been observed via β–γ spectroscopy at the Radioactive Isotope Beam Factory, RIKEN Nishina Center. The 150Ba ions were produced by the in-flight fission of a 238U beam with an energy of 345 MeV/nucleon. The E(2+) energy of 150Ba was identified at 100 keV, which is the lowest known in the neutron-rich Ba isotopes. A γ-ray peak was also observed at 597 keV. A mean-field calculation with a fully 3D real space was performed and a static octupole deformation was obtained for the Ba isotopes. Kπ = 0− and 1− excited states with significant octupole collectivity were newly predicted at around or lower than 1 MeV on the ground state of 150Ba by a random-phase approximation calculation. The 597 keV γ ray can be interpreted as a negative-parity state, showing that 150Ba may possess octupole collectivity.

AB - Excited states in the neutron-rich nucleus 150Ba have been observed via β–γ spectroscopy at the Radioactive Isotope Beam Factory, RIKEN Nishina Center. The 150Ba ions were produced by the in-flight fission of a 238U beam with an energy of 345 MeV/nucleon. The E(2+) energy of 150Ba was identified at 100 keV, which is the lowest known in the neutron-rich Ba isotopes. A γ-ray peak was also observed at 597 keV. A mean-field calculation with a fully 3D real space was performed and a static octupole deformation was obtained for the Ba isotopes. Kπ = 0− and 1− excited states with significant octupole collectivity were newly predicted at around or lower than 1 MeV on the ground state of 150Ba by a random-phase approximation calculation. The 597 keV γ ray can be interpreted as a negative-parity state, showing that 150Ba may possess octupole collectivity.

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DO - 10.1093/ptep/pty037

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JF - Progress of Theoretical and Experimental Physics

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