Observation of a γ-decaying millisecond isomeric state in 128Cd80

A. Jungclaus; H. Grawe; S. Nishimura; P. Doornenbal; G. Lorusso; G. S. Simpson; P. A. Söderström; T. Sumikama; J. Taprogge; Z. Y. Xu; H. Baba; F. Browne; N. Fukuda; R. Gernhäuser; G. Gey; N. Inabe; T. Isobe; H. S. Jung; D. Kameda; G. D. Kim; Y. K. Kim; I. Kojouharov; T. Kubo; N. Kurz; Y. K. Kwon; Z. Li; H. Sakurai; H. Schaffner; Y. Shimizu; K. Steiger; H. Suzuki; H. Takeda; Zs Vajta; H. Watanabe; J. Wu; A. Yagi; K. Yoshinaga; G. Benzoni; S. Bönig; K. Y. Chae; L. Coraggio; J. M. Daugas; F. Drouet; A. Gadea; A. Gargano; S. Ilieva; N. Itaco; F. G. Kondev; T. Kröll; G. J. Lane; A. Montaner-Pizá; K. Moschner; D. Mücher; F. Naqvi; M. Niikura; H. Nishibata; A. Odahara; R. Orlandi; Z. Patel; Zs Podolyák; A. Wendt

doi:10.1016/j.physletb.2017.07.006

Observation of a γ-decaying millisecond isomeric state in ¹²⁸Cd₈₀

A. Jungclaus^*, H. Grawe, S. Nishimura, P. Doornenbal, G. Lorusso, G. S. Simpson, P. A. Söderström, T. Sumikama, J. Taprogge, Z. Y. Xu, H. Baba, F. Browne, N. Fukuda, R. Gernhäuser, G. Gey, N. Inabe, T. Isobe, H. S. Jung, D. Kameda, G. D. KimY. K. Kim, I. Kojouharov, T. Kubo, N. Kurz, Y. K. Kwon, Z. Li, H. Sakurai, H. Schaffner, Y. Shimizu, K. Steiger, H. Suzuki, H. Takeda, Zs Vajta, H. Watanabe, J. Wu, A. Yagi, K. Yoshinaga, G. Benzoni, S. Bönig, K. Y. Chae, L. Coraggio, J. M. Daugas, F. Drouet, A. Gadea, A. Gargano, S. Ilieva, N. Itaco, F. G. Kondev, T. Kröll, G. J. Lane, A. Montaner-Pizá, K. Moschner, D. Mücher, F. Naqvi, M. Niikura, H. Nishibata, A. Odahara, R. Orlandi, Z. Patel, Zs Podolyák, A. Wendt

^*Corresponding author for this work

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

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Abstract

A new high-spin isomer in the neutron-rich nucleus ¹²⁸Cd was populated in the projectile fission of a ²³⁸U beam at the Radioactive Isotope Beam Factory at RIKEN. A half-life of T_1/2=6.3(8) ms was measured for the new state which was tentatively assigned a spin/parity of (15⁻). The experimental results are compared to shell model calculations performed using state-of-the-art realistic effective interactions and to the neighbouring nucleus ¹²⁹Cd. In the present experiment no evidence was found for the decay of a 18⁺ E6 spin-trap isomer, based on the complete alignment of the two-neutron and two-proton holes in the 0h_11/2 and the 0g_9/2 orbit, respectively, which is predicted to exist by the shell model.

Original language	English
Pages (from-to)	483-488
Number of pages	6
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	772
DOIs	https://doi.org/10.1016/j.physletb.2017.07.006
Publication status	Published - 10 Sept 2017

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10.1016/j.physletb.2017.07.006

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Jungclaus, A., Grawe, H., Nishimura, S., Doornenbal, P., Lorusso, G., Simpson, G. S., Söderström, P. A., Sumikama, T., Taprogge, J., Xu, Z. Y., Baba, H., Browne, F., Fukuda, N., Gernhäuser, R., Gey, G., Inabe, N., Isobe, T., Jung, H. S., Kameda, D., ... Wendt, A. (2017). Observation of a γ-decaying millisecond isomeric state in ¹²⁸Cd₈₀. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 772, 483-488. https://doi.org/10.1016/j.physletb.2017.07.006

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title = "Observation of a γ-decaying millisecond isomeric state in 128Cd80",

abstract = "A new high-spin isomer in the neutron-rich nucleus 128Cd was populated in the projectile fission of a 238U beam at the Radioactive Isotope Beam Factory at RIKEN. A half-life of T1/2=6.3(8) ms was measured for the new state which was tentatively assigned a spin/parity of (15−). The experimental results are compared to shell model calculations performed using state-of-the-art realistic effective interactions and to the neighbouring nucleus 129Cd. In the present experiment no evidence was found for the decay of a 18+ E6 spin-trap isomer, based on the complete alignment of the two-neutron and two-proton holes in the 0h11/2 and the 0g9/2 orbit, respectively, which is predicted to exist by the shell model.",

keywords = "Isomeric decays, Shell model calculations, Transition strengths",

author = "A. Jungclaus and H. Grawe and S. Nishimura and P. Doornenbal and G. Lorusso and Simpson, {G. S.} and S{\"o}derstr{\"o}m, {P. A.} and T. Sumikama and J. Taprogge and Xu, {Z. Y.} and H. Baba and F. Browne and N. Fukuda and R. Gernh{\"a}user and G. Gey and N. Inabe and T. Isobe and Jung, {H. S.} and D. Kameda and Kim, {G. D.} and Kim, {Y. K.} and I. Kojouharov and T. Kubo and N. Kurz and Kwon, {Y. K.} and Z. Li and H. Sakurai and H. Schaffner and Y. Shimizu and K. Steiger and H. Suzuki and H. Takeda and Zs Vajta and H. Watanabe and J. Wu and A. Yagi and K. Yoshinaga and G. Benzoni and S. B{\"o}nig and Chae, {K. Y.} and L. Coraggio and Daugas, {J. M.} and F. Drouet and A. Gadea and A. Gargano and S. Ilieva and N. Itaco and Kondev, {F. G.} and T. Kr{\"o}ll and Lane, {G. J.} and A. Montaner-Piz{\'a} and K. Moschner and D. M{\"u}cher and F. Naqvi and M. Niikura and H. Nishibata and A. Odahara and R. Orlandi and Z. Patel and Zs Podoly{\'a}k and A. Wendt",

note = "Publisher Copyright: {\textcopyright} 2017 The Author(s)",

year = "2017",

month = sep,

day = "10",

doi = "10.1016/j.physletb.2017.07.006",

language = "English",

volume = "772",

pages = "483--488",

journal = "Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics",

issn = "0370-2693",

publisher = "Elsevier B.V.",

}

Jungclaus, A, Grawe, H, Nishimura, S, Doornenbal, P, Lorusso, G, Simpson, GS, Söderström, PA, Sumikama, T, Taprogge, J, Xu, ZY, Baba, H, Browne, F, Fukuda, N, Gernhäuser, R, Gey, G, Inabe, N, Isobe, T, Jung, HS, Kameda, D, Kim, GD, Kim, YK, Kojouharov, I, Kubo, T, Kurz, N, Kwon, YK, Li, Z, Sakurai, H, Schaffner, H, Shimizu, Y, Steiger, K, Suzuki, H, Takeda, H, Vajta, Z, Watanabe, H, Wu, J, Yagi, A, Yoshinaga, K, Benzoni, G, Bönig, S, Chae, KY, Coraggio, L, Daugas, JM, Drouet, F, Gadea, A, Gargano, A, Ilieva, S, Itaco, N, Kondev, FG, Kröll, T, Lane, GJ, Montaner-Pizá, A, Moschner, K, Mücher, D, Naqvi, F, Niikura, M, Nishibata, H, Odahara, A, Orlandi, R, Patel, Z, Podolyák, Z & Wendt, A 2017, 'Observation of a γ-decaying millisecond isomeric state in ¹²⁸Cd₈₀', Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, vol. 772, pp. 483-488. https://doi.org/10.1016/j.physletb.2017.07.006

TY - JOUR

T1 - Observation of a γ-decaying millisecond isomeric state in 128Cd80

AU - Jungclaus, A.

AU - Grawe, H.

AU - Nishimura, S.

AU - Doornenbal, P.

AU - Lorusso, G.

AU - Simpson, G. S.

AU - Söderström, P. A.

AU - Sumikama, T.

AU - Taprogge, J.

AU - Xu, Z. Y.

AU - Baba, H.

AU - Browne, F.

AU - Fukuda, N.

AU - Gernhäuser, R.

AU - Gey, G.

AU - Inabe, N.

AU - Isobe, T.

AU - Jung, H. S.

AU - Kameda, D.

AU - Kim, G. D.

AU - Kim, Y. K.

AU - Kojouharov, I.

AU - Kubo, T.

AU - Kurz, N.

AU - Kwon, Y. K.

AU - Li, Z.

AU - Sakurai, H.

AU - Schaffner, H.

AU - Shimizu, Y.

AU - Steiger, K.

AU - Suzuki, H.

AU - Takeda, H.

AU - Vajta, Zs

AU - Watanabe, H.

AU - Wu, J.

AU - Yagi, A.

AU - Yoshinaga, K.

AU - Benzoni, G.

AU - Bönig, S.

AU - Chae, K. Y.

AU - Coraggio, L.

AU - Daugas, J. M.

AU - Drouet, F.

AU - Gadea, A.

AU - Gargano, A.

AU - Ilieva, S.

AU - Itaco, N.

AU - Kondev, F. G.

AU - Kröll, T.

AU - Lane, G. J.

AU - Montaner-Pizá, A.

AU - Moschner, K.

AU - Mücher, D.

AU - Naqvi, F.

AU - Niikura, M.

AU - Nishibata, H.

AU - Odahara, A.

AU - Orlandi, R.

AU - Patel, Z.

AU - Podolyák, Zs

AU - Wendt, A.

PY - 2017/9/10

Y1 - 2017/9/10

N2 - A new high-spin isomer in the neutron-rich nucleus 128Cd was populated in the projectile fission of a 238U beam at the Radioactive Isotope Beam Factory at RIKEN. A half-life of T1/2=6.3(8) ms was measured for the new state which was tentatively assigned a spin/parity of (15−). The experimental results are compared to shell model calculations performed using state-of-the-art realistic effective interactions and to the neighbouring nucleus 129Cd. In the present experiment no evidence was found for the decay of a 18+ E6 spin-trap isomer, based on the complete alignment of the two-neutron and two-proton holes in the 0h11/2 and the 0g9/2 orbit, respectively, which is predicted to exist by the shell model.

AB - A new high-spin isomer in the neutron-rich nucleus 128Cd was populated in the projectile fission of a 238U beam at the Radioactive Isotope Beam Factory at RIKEN. A half-life of T1/2=6.3(8) ms was measured for the new state which was tentatively assigned a spin/parity of (15−). The experimental results are compared to shell model calculations performed using state-of-the-art realistic effective interactions and to the neighbouring nucleus 129Cd. In the present experiment no evidence was found for the decay of a 18+ E6 spin-trap isomer, based on the complete alignment of the two-neutron and two-proton holes in the 0h11/2 and the 0g9/2 orbit, respectively, which is predicted to exist by the shell model.

KW - Isomeric decays

KW - Shell model calculations

KW - Transition strengths

UR - http://www.scopus.com/inward/record.url?scp=85030464093&partnerID=8YFLogxK

U2 - 10.1016/j.physletb.2017.07.006

DO - 10.1016/j.physletb.2017.07.006

M3 - Article

SN - 0370-2693

VL - 772

SP - 483

EP - 488

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

ER -

Observation of a γ-decaying millisecond isomeric state in ¹²⁸Cd₈₀

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