中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 近代物理研究所
  3. 中国科学院近代物理研究所
Metastable States of Se-92,Se-94: Identification of an Oblate K Isomer of Se-94 and the Ground-State Shape Transition between N=58 and 60

文献类型：期刊论文

作者Lizarazo, C.1,2; Soederstroem, P-A1,3,4; Werner, V1; Pietralla, N.1; Walker, P. M.5; Dong, G. X.6; Xu, F. R.7; Rodriguez, T. R.8; Browne, F.9; Doornenbal, P.3
刊名PHYSICAL REVIEW LETTERS
出版日期2020-06-01
卷号124期号:22页码:6
ISSN号0031-9007
DOI10.1103/PhysRevLett.124.222501
通讯作者Soederstroem, P-A(par.anders@eli-np.ro)
英文摘要Here we present new information on the shape evolution of the very neutron-rich Se-92,Se-94 nuclei from an isomer-decay spectroscopy experiment at the Radioactive Isotope Beam Factory at RIKEN. High-resolution germanium detectors were used to identify delayed gamma rays emitted following the decay of their isomers. New transitions are reported extending the previously known level schemes. The isomeric levels are interpreted as originating from high-K quasineutron states with an oblate deformation of beta similar to 0.25, with the high-K state in Se-94 being metastable and K hindered. Following this, Se-94 is the lowest-mass neutron-rich nucleus known to date with such a substantial K hindrance. Furthermore, it is the first observation of an oblate K isomer in a deformed nucleus. This opens up the possibility for a new region of K isomers at low Z and at oblate deformation, involving the same neutron orbitals as the prolate orbitals within the classic Z similar to 72 deformed hafnium region. From an interpretation of the level scheme guided by theoretical calculations, an oblate deformation is also suggested for the Se-94(60) ground-state band.
WOS关键词NUCLEI
资助项目German BMBF[05P15RDFN1] ; German BMBF[05P19RDFN1] ; German BMBF[05P15PKFNA] ; German BMBF[05P19PKFNA] ; ERC[MINOS-258567] ; Spanish MEC[FPA2014-57196-C5-4-P] ; Spanish MEC[FIS-2014-53434] ; National Key R&D Program of China[2018YFA0404402] ; National Natural Science Foundation of China[11961141004] ; National Natural Science Foundation of China[11735017] ; National Natural Science Foundation of China[11675225] ; National Natural Science Foundation of China[11635003] ; Vietnam MOST via the Physics Development Program[DTDLCN.25/18] ; Science and Technology Facilities Council (STFC)
WOS研究方向Physics
语种英语
出版者AMER PHYSICAL SOC
WOS记录号WOS:000537197200003
资助机构German BMBF ; ERC ; Spanish MEC ; National Key R&D Program of China ; National Natural Science Foundation of China ; Vietnam MOST via the Physics Development Program ; Science and Technology Facilities Council (STFC)
源URL[http://119.78.100.186/handle/113462/140791]  
专题中国科学院近代物理研究所
通讯作者Soederstroem, P-A
作者单位1.Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany
2.Schwerionenforsch GmbH, GSI Helmholtzzentrum, D-64291 Darmstadt, Germany
3.RIKEN, Nishina Ctr, 2-1 Hirosawa, Wako, Saitama 3510198, Japan
4.Horia Hulubei Natl Inst Phys & Nucl Engn IFIN HH, Extreme Light Infrastruct Nucl Phys ELI NP, Str Reactorului 30, Bucharest 077125, Romania
5.Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England
6.Huzhou Univ, Sch Sci, Huzhou 313000, Peoples R China
7.Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China
8.Univ Autonoma Madrid, Dept Fis Teor, Madrid 28049, Spain
9.Univ Brighton, Sch Comp Engn & Math, Brighton BN2 4GJ, E Sussex, England
10.Horia Hulubei Natl Inst Phys & Nucl Engn IFIN HH, Dept Nucl Phys DFN, Str Reactorului 30, Bucharest 077125, Romania
推荐引用方式
GB/T 7714		 Lizarazo, C.,Soederstroem, P-A,Werner, V,et al. Metastable States of Se-92,Se-94: Identification of an Oblate K Isomer of Se-94 and the Ground-State Shape Transition between N=58 and 60[J]. PHYSICAL REVIEW LETTERS,2020,124(22):6.
APA Lizarazo, C..,Soederstroem, P-A.,Werner, V.,Pietralla, N..,Walker, P. M..,...&Xu, Z..(2020).Metastable States of Se-92,Se-94: Identification of an Oblate K Isomer of Se-94 and the Ground-State Shape Transition between N=58 and 60.PHYSICAL REVIEW LETTERS,124(22),6.
MLA Lizarazo, C.,et al."Metastable States of Se-92,Se-94: Identification of an Oblate K Isomer of Se-94 and the Ground-State Shape Transition between N=58 and 60".PHYSICAL REVIEW LETTERS 124.22(2020):6.

入库方式： OAI收割

来源：近代物理研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。