Role of hexadecupole deformation in the shape evolution of neutron-rich Nd isotopes

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

Role of hexadecupole deformation in the shape evolution of neutron-rich Nd isotopes

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

Research output: Contribution to journal › Conference article › peer-review

Abstract

A new isomer with ms half-life was observed in ¹⁶⁰Nd at RIBF, RIKEN Nishina Center by using in-flight fission of a ²³⁸U beam and a cluster-type Ge detector array EURICA. The experimental results and a PSM calculation indicate that the isomer in ¹⁶⁰Nd is a 2 quasi-particle excitation of neutrons with a configuration of v1/2[521] × v7/2[633] as the case in other N = 100 isotones. The E(4⁺)/E(2⁺) ratio of the ground-state band, 3.29, shows the ¹⁶⁰Nd is well deformed and the ground band has a rotational nature. The 4^- excitation of Nd showed an increase in energy by ∼100 keV compared to that of ¹⁶²Sm as predicted by the PSM calculation. A PSM calculation was performed by changing input β₄ value and confirmed that the large hexadecupole deformation in Nd was responsible for the increase of the isomer energy.

Original language	English
Article number	015
Journal	Proceedings of Science
Volume	2016-September
Publication status	Published - 2016
Externally published	Yes
Event	26th International Nuclear Physics Conference, INPC 2016 - Adelaide, Australia Duration: Sep 11 2016 → Sep 16 2016

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Ideguchi, E., Simpson, G., Tanaka, M., Nishimura, S., Doornenbal, P., Söderström, P. A., Lorusso, G., Xu, Z. Y., Wu, J., Sumikama, T., Aoi, N., Baba, H., Bello, F., Browne, F., Daido, R., Fang, Y., Fukuda, N., Gey, G., Go, S., ... Yagi, A. (2016). Role of hexadecupole deformation in the shape evolution of neutron-rich Nd isotopes. Proceedings of Science, 2016-September, [015].

Ideguchi, E, Simpson, G, Tanaka, M, Nishimura, S, Doornenbal, P, Söderström, PA, Lorusso, G, Xu, ZY, Wu, J, Sumikama, T, Aoi, N, Baba, H, Bello, F, Browne, F, Daido, R, Fang, Y, Fukuda, N, Gey, G, Go, S, Inabe, S, Isobe, T, Kameda, D, Kobayashi, K, Kobayashi, M, Komatsubara, T, Kubo, T, Kuti, I, Li, Z, Matsushita, M, Michimasa, S, Moon, CB, Nishibata, H, Nishizuka, I, Odahara, A, Patel, Z, Rice, S, Sahin, E, Sinclair, L, Suzuki, H, Takeda, H, Taprogge, J, Vajta, Z, Watanabe, H & Yagi, A 2016, 'Role of hexadecupole deformation in the shape evolution of neutron-rich Nd isotopes', Proceedings of Science, vol. 2016-September, 015.

@article{031109ed4d14495ba953bfe161d1d21e,

title = "Role of hexadecupole deformation in the shape evolution of neutron-rich Nd isotopes",

abstract = "A new isomer with ms half-life was observed in 160Nd at RIBF, RIKEN Nishina Center by using in-flight fission of a 238U beam and a cluster-type Ge detector array EURICA. The experimental results and a PSM calculation indicate that the isomer in 160Nd is a 2 quasi-particle excitation of neutrons with a configuration of v1/2[521] × v7/2[633] as the case in other N = 100 isotones. The E(4+)/E(2+) ratio of the ground-state band, 3.29, shows the 160Nd is well deformed and the ground band has a rotational nature. The 4- excitation of Nd showed an increase in energy by ∼100 keV compared to that of 162Sm as predicted by the PSM calculation. A PSM calculation was performed by changing input β4 value and confirmed that the large hexadecupole deformation in Nd was responsible for the increase of the isomer energy.",

author = "E. Ideguchi and G. Simpson and Mn Tanaka and S. Nishimura and P. Doornenbal and S{\"o}derstr{\"o}m, {P. A.} and G. Lorusso and Xu, {Z. Y.} and J. Wu and T. Sumikama and N. Aoi and H. Baba and F. Bello and F. Browne and R. Daido and Y. Fang and N. Fukuda and G. Gey and S. Go and S. Inabe and T. Isobe and D. Kameda and K. Kobayashi and M. Kobayashi and T. Komatsubara and T. Kubo 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 L. Sinclair and H. Suzuki and H. Takeda and J. Taprogge and Zs Vajta and H. Watanabe and A. Yagi",

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{\'o}n under Contracts No. FPA2009-13377-C02 and FPA2011-29854-C04 and the Hungarian Research Fund (OTKA), Contract No. K100835. The author R.Y. was supported by ALPS program by the University of Tokyo and Grant-in-aid for JSPS fellow. Publisher Copyright: {\textcopyright} Copyright owned by the author(s).; 26th International Nuclear Physics Conference, INPC 2016 ; Conference date: 11-09-2016 Through 16-09-2016",

year = "2016",

language = "English",

volume = "2016-September",

journal = "Proceedings of Science",

issn = "1824-8039",

publisher = "Sissa Medialab Srl",

}

TY - JOUR

T1 - Role of hexadecupole deformation in the shape evolution of neutron-rich Nd isotopes

AU - Ideguchi, E.

AU - Simpson, G.

AU - Tanaka, Mn

AU - Nishimura, S.

AU - Doornenbal, P.

AU - Söderström, P. A.

AU - Lorusso, G.

AU - Xu, Z. Y.

AU - Wu, J.

AU - Sumikama, T.

AU - Aoi, N.

AU - Baba, H.

AU - Bello, F.

AU - Browne, F.

AU - Daido, R.

AU - Fang, Y.

AU - Fukuda, N.

AU - Gey, G.

AU - Go, S.

AU - Inabe, S.

AU - Isobe, T.

AU - Kameda, D.

AU - Kobayashi, K.

AU - Kobayashi, M.

AU - Komatsubara, T.

AU - Kubo, T.

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 - Sinclair, L.

AU - Suzuki, H.

AU - Takeda, H.

AU - Taprogge, J.

AU - Vajta, Zs

AU - Watanabe, H.

AU - Yagi, A.

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 Innovación under Contracts No. FPA2009-13377-C02 and FPA2011-29854-C04 and the Hungarian Research Fund (OTKA), Contract No. K100835. The author R.Y. was supported by ALPS program by the University of Tokyo and Grant-in-aid for JSPS fellow. Publisher Copyright: © Copyright owned by the author(s).

PY - 2016

Y1 - 2016

N2 - A new isomer with ms half-life was observed in 160Nd at RIBF, RIKEN Nishina Center by using in-flight fission of a 238U beam and a cluster-type Ge detector array EURICA. The experimental results and a PSM calculation indicate that the isomer in 160Nd is a 2 quasi-particle excitation of neutrons with a configuration of v1/2[521] × v7/2[633] as the case in other N = 100 isotones. The E(4+)/E(2+) ratio of the ground-state band, 3.29, shows the 160Nd is well deformed and the ground band has a rotational nature. The 4- excitation of Nd showed an increase in energy by ∼100 keV compared to that of 162Sm as predicted by the PSM calculation. A PSM calculation was performed by changing input β4 value and confirmed that the large hexadecupole deformation in Nd was responsible for the increase of the isomer energy.

AB - A new isomer with ms half-life was observed in 160Nd at RIBF, RIKEN Nishina Center by using in-flight fission of a 238U beam and a cluster-type Ge detector array EURICA. The experimental results and a PSM calculation indicate that the isomer in 160Nd is a 2 quasi-particle excitation of neutrons with a configuration of v1/2[521] × v7/2[633] as the case in other N = 100 isotones. The E(4+)/E(2+) ratio of the ground-state band, 3.29, shows the 160Nd is well deformed and the ground band has a rotational nature. The 4- excitation of Nd showed an increase in energy by ∼100 keV compared to that of 162Sm as predicted by the PSM calculation. A PSM calculation was performed by changing input β4 value and confirmed that the large hexadecupole deformation in Nd was responsible for the increase of the isomer energy.

UR - http://www.scopus.com/inward/record.url?scp=85034586794&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85034586794&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:85034586794

VL - 2016-September

JO - Proceedings of Science

JF - Proceedings of Science

SN - 1824-8039

M1 - 015

T2 - 26th International Nuclear Physics Conference, INPC 2016

Y2 - 11 September 2016 through 16 September 2016

ER -

Role of hexadecupole deformation in the shape evolution of neutron-rich Nd isotopes

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