Observation of a μs isomer in In85 49134: Proton-neutron coupling "southeast" of Sn82 50132

V. H. Phong; G. Lorusso; T. Davinson; A. Estrade; O. Hall; J. Liu; K. Matsui; F. Montes; S. Nishimura; A. Boso; P. H. Regan; R. Shearman; Z. Y. Xu; J. Agramunt; J. M. Allmond; D. S. Ahn; A. Algora; H. Baba; N. T. Brewer; C. G. Bruno; R. Caballero-Folch; F. Calvino; M. Wolińska-Cichocka; G. Cortes; I. Dillmann; C. Domingo-Pardo; A. Gargano; S. Go; C. J. Griffin; R. K. Grzywacz; L. Harkness-Brennan; T. Isobe; A. Jungclaus; D. Kahl; L. H. Khiem; G. Kiss; A. Korgul; S. Kubono; K. Miernik; A. I. Morales; N. Nepal; M. Piersa; Zs Podolyák; B. C. Rasco; K. P. Rykaczewski; H. Sakurai; Y. Shimizu; D. W. Stacener; T. Sumikama; H. Suzuki; H. Takeda; J. L. Tain; A. Tarifeño-Saldivia; A. Tolosa-Delgado; V. Vaquero; P. J. Woods; R. Yokoyama; C. Yuan

doi:10.1103/PhysRevC.100.011302

Observation of a μs isomer in In85 49134: Proton-neutron coupling "southeast" of Sn82 50132

V. H. Phong, G. Lorusso, T. Davinson, A. Estrade, O. Hall, J. Liu, K. Matsui, F. Montes, S. Nishimura, A. Boso, P. H. Regan, R. Shearman, Z. Y. Xu, J. Agramunt, J. M. Allmond, D. S. Ahn, A. Algora, H. Baba, N. T. Brewer, C. G. BrunoR. Caballero-Folch, F. Calvino, M. Wolińska-Cichocka, G. Cortes, I. Dillmann, C. Domingo-Pardo, A. Gargano, S. Go, C. J. Griffin, R. K. Grzywacz, L. Harkness-Brennan, T. Isobe, A. Jungclaus, D. Kahl, L. H. Khiem, G. Kiss, A. Korgul, S. Kubono, K. Miernik, A. I. Morales, N. Nepal, M. Piersa, Zs Podolyák, B. C. Rasco, K. P. Rykaczewski, H. Sakurai, Y. Shimizu, D. W. Stacener, T. Sumikama, H. Suzuki, H. Takeda, J. L. Tain, A. Tarifeño-Saldivia, A. Tolosa-Delgado, V. Vaquero, P. J. Woods, R. Yokoyama, C. Yuan

Nuclear Structure and Nuclear Astrophysi

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Abstract

We report on the observation of a microsecond isomeric state in the single-proton-hole, three-neutron-particle nucleus In134. The nuclei of interest were produced by in-flight fission of a U238 beam at the Radioactive Isotope Beam Factory at RIKEN. The isomer depopulates through a γ ray of energy 56.7(1) keV and with a half-life of T1/2=3.5(4)μs. Based on the comparison with shell-model calculations, we interpret the isomer as the Iπ=5- member of the π0g9/2-1 - ν1f7/23 multiplet, decaying to the Iπ=7- ground state with a reduced-transition probability of B(E2;5-→7-)=0.53(6)W.u. Observation of this isomer, and lack of evidence in the current work for a Iπ=5- isomer decay in In132, provides a benchmark of the proton-neutron interaction in the region of the nuclear chart "southeast" of Sn132, where experimental information on excited states is sparse.

Original language	English
Article number	011302
Journal	Physical Review C
Volume	100
Issue number	1
DOIs	https://doi.org/10.1103/PhysRevC.100.011302
State	Published - Jul 29 2019

Funding

This experiment was performed at RI Beam Factory operated by RIKEN Nishina Center and CNS, University of Tokyo. This research was sponsored in part by the Office of Nuclear Physics, U.S. Department of Energy under Awards No. DE-FG02-96ER40983 (UTK) and No. DE-AC05-00OR22725 (ORNL), and by the National Nuclear Security Administration under the Stewardship Science Academic Alliances program through DOE Award No. DE-NA0002132, by the National Science Foundation under Grants No. PHY-1430152 (JINA Center for the Evolution of the Elements), No. PHY-1565546 (NSCL), and No. PHY1714153 (Central Michigan University), by the Polish National Science Center under Contract No. UMO-2015/18/E/ST2/00217, by JSPS KAKENHI (Grants No. 14F04808, No. 17H06090, No. 25247045, and No. 19340074), by the UK Science and Technology Facilities Council ST/P005314/1, by NKFIH (NN128072), by the Janos Bolyai research fellowship of the Hungarian Academy of Sciences, by the UNKP-18-4-DE-449 New National Excellence Program of the Ministry of Human Capacities of Hungary, by Spanish Ministerio de Economia y Competitividad grants (FPA2017-83946-C2-1-P, FPA2011-28770-C03-03, FPA2014-52823-C2-1-P, FPA2014-52823-C2-2-P, FPA2014-57196-C5-4-P, FPA2017-84756-C4-2-P, SEV-2014-0398, and IJCI-2014-19172), by European Commission FP7/EURATOM Contract No. 605203, by the UK Nuclear Data Network funded by the UK Science and Technology Facilities Council Grant No. ST/N00244X/1, by the National Research Foundation (NRF) in South Korea (Grants No. 2016K1A3A7A09005575 and No. 2015H1A2A1030275), and by the Natural Sciences and Engineering Research Council of Canada (NSERC) via the Discovery Grants No. SAPIN-2014-00028 and No. RG-PAS 462257-2014. TRIUMF receives federal funding via a contribution agreement with the National Research Council of Canada. N.P.L. receives funding from the UK Department of Business Energy and Industrial Strategy (BEIS) via the NMS program. Shell-model calculations are supported by the National Natural Science Foundation of China 11775316. L.H.K. acknowledges Vietnam Academy of Science and Technology for support under the Program of Development in the Field of Physics by 2020\u2013Study of unstable nuclei beam induced nuclear reaction at RIKEN. V.H.P. would like to express his deep gratitude to the RIKEN institute for the support during the term of IPA program at RIKEN Nishina Center.

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10.1103/PhysRevC.100.011302

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Phong, V. H., Lorusso, G., Davinson, T., Estrade, A., Hall, O., Liu, J., Matsui, K., Montes, F., Nishimura, S., Boso, A., Regan, P. H., Shearman, R., Xu, Z. Y., Agramunt, J., Allmond, J. M., Ahn, D. S., Algora, A., Baba, H., Brewer, N. T., ... Yuan, C. (2019). Observation of a μs isomer in In85 49134: Proton-neutron coupling "southeast" of Sn82 50132. Physical Review C, 100(1), Article 011302. https://doi.org/10.1103/PhysRevC.100.011302

@article{110eafaffe63478ea8b755c7906bfd45,

title = "Observation of a μs isomer in In85 49134: Proton-neutron coupling {"}southeast{"} of Sn82 50132",

abstract = "We report on the observation of a microsecond isomeric state in the single-proton-hole, three-neutron-particle nucleus In134. The nuclei of interest were produced by in-flight fission of a U238 beam at the Radioactive Isotope Beam Factory at RIKEN. The isomer depopulates through a γ ray of energy 56.7(1) keV and with a half-life of T1/2=3.5(4)μs. Based on the comparison with shell-model calculations, we interpret the isomer as the Iπ=5- member of the π0g9/2-1 - ν1f7/23 multiplet, decaying to the Iπ=7- ground state with a reduced-transition probability of B(E2;5-→7-)=0.53(6)W.u. Observation of this isomer, and lack of evidence in the current work for a Iπ=5- isomer decay in In132, provides a benchmark of the proton-neutron interaction in the region of the nuclear chart {"}southeast{"} of Sn132, where experimental information on excited states is sparse.",

author = "Phong, {V. H.} and G. Lorusso and T. Davinson and A. Estrade and O. Hall and J. Liu and K. Matsui and F. Montes and S. Nishimura and A. Boso and Regan, {P. H.} and R. Shearman and Xu, {Z. Y.} and J. Agramunt and Allmond, {J. M.} and Ahn, {D. S.} and A. Algora and H. Baba and Brewer, {N. T.} and Bruno, {C. G.} and R. Caballero-Folch and F. Calvino and M. Woli{\'n}ska-Cichocka and G. Cortes and I. Dillmann and C. Domingo-Pardo and A. Gargano and S. Go and Griffin, {C. J.} and Grzywacz, {R. K.} and L. Harkness-Brennan and T. Isobe and A. Jungclaus and D. Kahl and Khiem, {L. H.} and G. Kiss and A. Korgul and S. Kubono and K. Miernik and Morales, {A. I.} and N. Nepal and M. Piersa and Zs Podoly{\'a}k and Rasco, {B. C.} and Rykaczewski, {K. P.} and H. Sakurai and Y. Shimizu and Stacener, {D. W.} and T. Sumikama and H. Suzuki and H. Takeda and Tain, {J. L.} and A. Tarife{\~n}o-Saldivia and A. Tolosa-Delgado and V. Vaquero and Woods, {P. J.} and R. Yokoyama and C. Yuan",

note = "Publisher Copyright: {\textcopyright} 2019 American Physical Society.",

year = "2019",

month = jul,

day = "29",

doi = "10.1103/PhysRevC.100.011302",

language = "English",

volume = "100",

journal = "Physical Review C",

issn = "2469-9985",

publisher = "American Physical Society",

number = "1",

}

Phong, VH, Lorusso, G, Davinson, T, Estrade, A, Hall, O, Liu, J, Matsui, K, Montes, F, Nishimura, S, Boso, A, Regan, PH, Shearman, R, Xu, ZY, Agramunt, J, Allmond, JM, Ahn, DS, Algora, A, Baba, H, Brewer, NT, Bruno, CG, Caballero-Folch, R, Calvino, F, Wolińska-Cichocka, M, Cortes, G, Dillmann, I, Domingo-Pardo, C, Gargano, A, Go, S, Griffin, CJ, Grzywacz, RK, Harkness-Brennan, L, Isobe, T, Jungclaus, A, Kahl, D, Khiem, LH, Kiss, G, Korgul, A, Kubono, S, Miernik, K, Morales, AI, Nepal, N, Piersa, M, Podolyák, Z, Rasco, BC, Rykaczewski, KP, Sakurai, H, Shimizu, Y, Stacener, DW, Sumikama, T, Suzuki, H, Takeda, H, Tain, JL, Tarifeño-Saldivia, A, Tolosa-Delgado, A, Vaquero, V, Woods, PJ, Yokoyama, R & Yuan, C 2019, 'Observation of a μs isomer in In85 49134: Proton-neutron coupling "southeast" of Sn82 50132', Physical Review C, vol. 100, no. 1, 011302. https://doi.org/10.1103/PhysRevC.100.011302

TY - JOUR

T1 - Observation of a μs isomer in In85 49134

T2 - Proton-neutron coupling "southeast" of Sn82 50132

AU - Phong, V. H.

AU - Lorusso, G.

AU - Davinson, T.

AU - Estrade, A.

AU - Hall, O.

AU - Liu, J.

AU - Matsui, K.

AU - Montes, F.

AU - Nishimura, S.

AU - Boso, A.

AU - Regan, P. H.

AU - Shearman, R.

AU - Xu, Z. Y.

AU - Agramunt, J.

AU - Allmond, J. M.

AU - Ahn, D. S.

AU - Algora, A.

AU - Baba, H.

AU - Brewer, N. T.

AU - Bruno, C. G.

AU - Caballero-Folch, R.

AU - Calvino, F.

AU - Wolińska-Cichocka, M.

AU - Cortes, G.

AU - Dillmann, I.

AU - Domingo-Pardo, C.

AU - Gargano, A.

AU - Go, S.

AU - Griffin, C. J.

AU - Grzywacz, R. K.

AU - Harkness-Brennan, L.

AU - Isobe, T.

AU - Jungclaus, A.

AU - Kahl, D.

AU - Khiem, L. H.

AU - Kiss, G.

AU - Korgul, A.

AU - Kubono, S.

AU - Miernik, K.

AU - Morales, A. I.

AU - Nepal, N.

AU - Piersa, M.

AU - Podolyák, Zs

AU - Rasco, B. C.

AU - Rykaczewski, K. P.

AU - Sakurai, H.

AU - Shimizu, Y.

AU - Stacener, D. W.

AU - Sumikama, T.

AU - Suzuki, H.

AU - Takeda, H.

AU - Tain, J. L.

AU - Tarifeño-Saldivia, A.

AU - Tolosa-Delgado, A.

AU - Vaquero, V.

AU - Woods, P. J.

AU - Yokoyama, R.

AU - Yuan, C.

PY - 2019/7/29

Y1 - 2019/7/29

N2 - We report on the observation of a microsecond isomeric state in the single-proton-hole, three-neutron-particle nucleus In134. The nuclei of interest were produced by in-flight fission of a U238 beam at the Radioactive Isotope Beam Factory at RIKEN. The isomer depopulates through a γ ray of energy 56.7(1) keV and with a half-life of T1/2=3.5(4)μs. Based on the comparison with shell-model calculations, we interpret the isomer as the Iπ=5- member of the π0g9/2-1 - ν1f7/23 multiplet, decaying to the Iπ=7- ground state with a reduced-transition probability of B(E2;5-→7-)=0.53(6)W.u. Observation of this isomer, and lack of evidence in the current work for a Iπ=5- isomer decay in In132, provides a benchmark of the proton-neutron interaction in the region of the nuclear chart "southeast" of Sn132, where experimental information on excited states is sparse.

AB - We report on the observation of a microsecond isomeric state in the single-proton-hole, three-neutron-particle nucleus In134. The nuclei of interest were produced by in-flight fission of a U238 beam at the Radioactive Isotope Beam Factory at RIKEN. The isomer depopulates through a γ ray of energy 56.7(1) keV and with a half-life of T1/2=3.5(4)μs. Based on the comparison with shell-model calculations, we interpret the isomer as the Iπ=5- member of the π0g9/2-1 - ν1f7/23 multiplet, decaying to the Iπ=7- ground state with a reduced-transition probability of B(E2;5-→7-)=0.53(6)W.u. Observation of this isomer, and lack of evidence in the current work for a Iπ=5- isomer decay in In132, provides a benchmark of the proton-neutron interaction in the region of the nuclear chart "southeast" of Sn132, where experimental information on excited states is sparse.

UR - http://www.scopus.com/inward/record.url?scp=85069908701&partnerID=8YFLogxK

U2 - 10.1103/PhysRevC.100.011302

DO - 10.1103/PhysRevC.100.011302

M3 - Article

AN - SCOPUS:85069908701

SN - 2469-9985

VL - 100

JO - Physical Review C

JF - Physical Review C

IS - 1

M1 - 011302

ER -

Observation of a μs isomer in In85 49134: Proton-neutron coupling "southeast" of Sn82 50132

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