Observation of a mu s isomer in In-134(49)85: Proton-neutron coupling 'southeast' of Sn-132(50)82

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.Bruno C. G.Caballero-Folch R.Calvino F.Wolinska-Cichocka M.Cortes G.Dillmann IDomingo-Pardo C.Gargano A.Go S.Griffin C. J.Grzywacz R. K.Harkness-Brennan L.Isobe T.Jungclaus A.Kahl D.Khiem L. H.Kiss G.Korgul A.Kubono S.Miernik K.Morales A. INepal N.Piersa M.Podolyak ZsRasco B. C.Rykaczewski K. P.Sakurai H.Shimizu Y.Stacener D. W.Sumikama T.Suzuki H.Takeda H.Tain J. L.Tarifeno-Saldivia A.Tolosa-Delgado A.Vaquero V.Woods P. J.Yokoyama R.Yuan C.

首页> 外文期刊>Physical review, C >Observation of a mu s isomer in In-134(49)85: Proton-neutron coupling 'southeast' of Sn-132(50)82

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Observation of a mu s isomer in In-134(49)85: Proton-neutron coupling 'southeast' of Sn-132(50)82

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We report on the observation of a microsecond isomeric state in the single-proton-hole, three-neutron-particle nucleus In-134. The nuclei of interest were produced by in-flight fission of a U-238 beam at the Radioactive Isotope Beam Factory at RIKEN. The isomer depopulates through a gamma ray of energy 56.7(1) keV and with a half-life of T-1/2 = 3.5(4) mu s. Based on the comparison with shell-model calculations, we interpret the isomer as the I-pi = 5(-) member of the pi 0g(9/2)(-1) circle times nu 1f(7/2)(3) multiplet, decaying to the I-pi = 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 I-pi = 5(-) isomer decay in In-132, provides a benchmark of the proton-neutron interaction in the region of the nuclear chart "southeast" of Sn-132, where experimental information on excited states is sparse.

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《Physical review, C》 |2019年第1期|共6页
作者
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.Bruno C. G.Caballero-Folch R.Calvino F.Wolinska-Cichocka M.Cortes G.Dillmann IDomingo-Pardo C.Gargano A.Go S.Griffin C. J.Grzywacz R. K.Harkness-Brennan L.Isobe T.Jungclaus A.Kahl D.Khiem L. H.Kiss G.Korgul A.Kubono S.Miernik K.Morales A. INepal N.Piersa M.Podolyak ZsRasco B. C.Rykaczewski K. P.Sakurai H.Shimizu Y.Stacener D. W.Sumikama T.Suzuki H.Takeda H.Tain J. L.Tarifeno-Saldivia A.Tolosa-Delgado A.Vaquero V.Woods P. J.Yokoyama R.Yuan C.;
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Univ Edinburgh, Sch Phys & Astron, Edinburgh EH9 3FD, Midlothian, Scotland;

Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA;

Sun Yat Sen Univ, Sino French Inst Nucl Engn & Technol, Zhuhai 519082, Guangdong, Peoples R ChinaRIKEN, RIKEN Nishina Ctr, 2-1 Hirosawa, Wako, Saitama 3510198, JapanCent Michigan Univ, Dept Phys, Mt Pleasant, MI 48859 USANatl Superconducting Cyclotron Lab, E Lansing, MI 48824 USANatl Phys Lab, Chem Med & Enviromental Sci Div, Teddington TW1 10LW, Middx, EnglandUniv Valencia, Inst Fis Corpuscular, CSIC, Apartado Correos 22085, E-46071 Valencia, SpainOak Ridge Natl Lab, Phys Div, Oak Ridge, TN 37831 USATRIUMF, Vancouver, BC V6T 2A3, CanadaUniv Politecn Cataluna, INTE ETSEIB, E-08028 Barcelona, SpainUniv Warsaw, Heavy Ion Lab, PL-02093 Warsaw, PolandComplesso Univ Monte S Angelo, Ist Nazl Fis Nucl, I-80126 Naples, ItalyUniv Liverpool, Dept Phys, Liverpool L69 7ZE, Merseyside, EnglandCSIC, Inst Estruct Mat, E-28006 Madrid, SpainVietnam Acad Sci & Technol, Inst Phys, 10 Dao Tan, Hanoi 118011, VietnamUniv Warsaw, Fac Phys, PL-02093 Warsaw, PolandUniv Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England;

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中图分类原子核物理学、高能物理学;
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1. Observation of a mu s isomer in In-134(49)85: Proton-neutron coupling "southeast" of Sn-132(50)82 [J] . Phong V. H., Lorusso G., Davinson T., Physical review, C . 2019,第1期

机译：观察134（49）85：SN-132（50）82的质子 - 中子偶联“东南”的质子 - 中子耦合
2. Structure of Te-132(52)80: The two-particle and two-hole spectrum of Sn-132(50)82 [J] . Biswas S., Palit R., Navin A., Physical review, C . 2016,第3期

机译：TE-132（52）80的结构：SN-132（50）82的双粒子和两个孔光谱
3. High-spin excitations of ~(81,82,83,85)Se: Competing single-particle and collective structures around N = 50 [J] . M.-G. Porquet, A. Astier, Ts. Venkova, The European Physical Journal, A. Hadrons and Nuclei . 2009,第3期

机译：〜（81,82,83,85）Se的高自旋激发：N = 50附近竞争的单粒子和集体结构
4. The doubly closed shell nucleus Sn-132(50)82 [O] . Björnstad, T., García Borge, María José, Blomqvist, J., 1986

机译：双封闭壳核Sn-132（50）82

Observation of a mu s isomer in In-134(49)85: Proton-neutron coupling 'southeast' of Sn-132(50)82

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