中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Diversity of shapes and rotations in the gamma-soft Ba-130 nucleus: First observation of a t-band in the A=130 mass region

文献类型:期刊论文

作者Bazzacco, D.13,14; Petrache, C. M.5; Walker, P. M.6; Guo, S.4,7; Chen, Q. B.9; Frauendorf, S.10; Liu, Y. X.11; Wyss, R. A.12; Mengoni, D.13,14; Qiang, Y. H.7
刊名PHYSICS LETTERS B
出版日期2019-08-10
卷号795页码:241-247
ISSN号0370-2693
关键词Nuclear structure Collective rotations Shape coexistence Particle rotor model Projected shell model Tiltid axis cranking
DOI10.1016/j.physletb.2019.06.040
通讯作者Petrache, C. M.(petrache@csnsm.in2p3.fr) ; Guo, S.(gs@impcas.ac.cn)
英文摘要Several new bands have been identified in Ba-130, among which there is one with band-head spin 8(+). Its properties are in agreement with the Fermi-aligned nu h(11/2)(2)[523]circle times 9/2(-)[514] Nilsson configuration. This is the first observation of a two-quasiparticle t-band in the A = 130 mass region. The t-band is fed by a dipole band involving two additional h(11/2) protons. The odd-spin partners of the proton and neutron S-bands and the ground-state band at high spins are also newly identified. The observed bands are discussed using several theoretical models, total Routhians surfaces (TRS), tilted axis cranking (TAC), particle rotor model (PRM) and projected shell model (PSM), which strongly suggest the coexistence of prolate and oblate shapes polarized by rotation aligned two-proton and two-neutron configurations, as well as prolate collective rotations around axes with different orientations. With the new results, 130 Ba presents one of the best and most complete sets of collective excitations that a gamma-soft nucleus can manifest at medium and high spins, revealing a diversity of shapes and rotations for the nuclei in the A = 130 mass region. Crown Copyright (C) 2019 Published by Elsevier B.V.
WOS关键词PROJECTED SHELL-MODEL ; HIGH-SPIN STATES ; NEUTRON WALL ; PROTON ; PROLATE ; ROTOR ; SPECTROSCOPY ; COEXISTENCE ; ALIGNMENT ; XE
资助项目National Natural Science Foundation of China[U1832139] ; National Natural Science Foundation of China[11505242] ; National Natural Science Foundation of China[11305220] ; National Natural Science Foundation of China[U1732139] ; National Natural Science Foundation of China[11775274] ; National Natural Science Foundation of China[11575255] ; project Cai YuanPei 2018[41458XH] ; Natural Sciences and Engineering Research Council of Canada ; National Research, Development and Innovation Fund of Hungary[K128947] ; STFC[ST/P005314/1] ; National Research, Development and Innovation Office NKFIH[PD 124717] ; National Research, Development and Innovation Office NKFIH[GINOP-2.3.3-15-2016-00034] ; Polish National Science Centre (NCN)[2013/10/M/ST2/00427] ; National Research Foundation of South Africa[GUN: 93531] ; National Research Foundation of South Africa[109134] ; Deutsche Forschungsgemeinschaft (DFG) ; National Natural Science Foundation of China (NSFC) ; US-DoE Grant[DE-FG02-95ER4093]
WOS研究方向Astronomy & Astrophysics ; Physics
语种英语
出版者ELSEVIER
WOS记录号WOS:000477924000034
资助机构National Natural Science Foundation of China ; project Cai YuanPei 2018 ; Natural Sciences and Engineering Research Council of Canada ; National Research, Development and Innovation Fund of Hungary ; STFC ; National Research, Development and Innovation Office NKFIH ; Polish National Science Centre (NCN) ; National Research Foundation of South Africa ; Deutsche Forschungsgemeinschaft (DFG) ; National Natural Science Foundation of China (NSFC) ; US-DoE Grant
源URL[http://119.78.100.186/handle/113462/132926]  
专题中国科学院近代物理研究所
通讯作者Petrache, C. M.; Guo, S.
作者单位1.Simon Fraser Univ, Dept Chem, Burnaby, BC V5A 1S6, Canada
2.Natl Res Fdn, iThemba LABS, POB 722, ZA-7131 Somerset West, South Africa
3.Hungarian Acad Sci, Inst Nucl Res, Pf 51, H-4001 Debrecen, Hungary
4.Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China
5.Univ Paris Saclay, CNRS, IN2P3, Ctr Sci Nucl & Sci Mat, Bat 104-108, F-91405 Orsay, France
6.Univ Surrey, Dept Phys, Guildford GU2 7XH, Surrey, England
7.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China
8.Univ Warsaw, Heavy Ion Lab, PL-02093 Warsaw, Poland
9.Tech Univ Munich, Phys Dept, D-85747 Garching, Germany
10.Univ Notre Dame, Dept Phys, Notre Dame, IN 46557 USA
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GB/T 7714
Bazzacco, D.,Petrache, C. M.,Walker, P. M.,et al. Diversity of shapes and rotations in the gamma-soft Ba-130 nucleus: First observation of a t-band in the A=130 mass region[J]. PHYSICS LETTERS B,2019,795:241-247.
APA Bazzacco, D..,Petrache, C. M..,Walker, P. M..,Guo, S..,Chen, Q. B..,...&Tucholski, A..(2019).Diversity of shapes and rotations in the gamma-soft Ba-130 nucleus: First observation of a t-band in the A=130 mass region.PHYSICS LETTERS B,795,241-247.
MLA Bazzacco, D.,et al."Diversity of shapes and rotations in the gamma-soft Ba-130 nucleus: First observation of a t-band in the A=130 mass region".PHYSICS LETTERS B 795(2019):241-247.

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来源:近代物理研究所

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