New alpha-Emitting Isotope U-214 and Abnormal Enhancement of alpha-Particle Clustering in Lightest Uranium Isotopes

doi:10.1103/PhysRevLett.126.152502

	New alpha-Emitting Isotope U-214 and Abnormal Enhancement of alpha-Particle Clustering in Lightest Uranium Isotopes
	Zhang, Z. Y.4,5; Yang, H. B.4; Huang, M. H.4,5; Gan, Z. G.4,5; Yuan, C. X.6; Qi, C.7; Andreyev, A. N.1,8; Liu, M. L.4,5; Ma, L.4; Zhang, M. M.4
刊名	PHYSICAL REVIEW LETTERS
	2021-04-14
卷号	126 期号:15 页码:6
ISSN号	0031-9007
DOI	10.1103/PhysRevLett.126.152502
通讯作者	Gan, Z. G.(zggan@impcas.ac.cn)
英文摘要	A new alpha-emitting isotope U-214, produced by the fusion-evaporation reaction W-182(Ar-36,4n) U-214, was identified by employing the gas-filled recoil separator SHANS and the recoil-a correlation technique. More precise a-decay properties of even-even nuclei U-216,U-218 were also measured in the reactions of Ar-40, Ca-40 beams with W-180,W-182,W- 184 targets. By combining the experimental data, improved alpha-decay reduced widths delta(2) for the even-even Po-Pu nuclei in the vicinity of the magic neutron number N = 126 are deduced. Their systematic trends are discussed in terms of the N-p N-n scheme in order to study the influence of protonneutron interaction on a decay in this region of nuclei. It is strikingly found that the reduced widths of( 214,216)U are significantly enhanced by a factor of two as compared with the NpNn systematics for the 84 <= Z <= 90 and N < 126 even-even nuclei. The abnormal enhancement is interpreted by the strong monopole interaction between the valence protons and neutrons occupying the pi 1f (7/2) and nu 1f(5/2) spin-orbit partner orbits, which is supported by the large-scale shell model calculation.
资助项目	Strategic Priority Research Program of Chinese Academy of Sciences[XDB34010000] ; National Key R&D Program of China[2018YFA0404402] ; National Natural Science Foundation of China[U1732270] ; National Natural Science Foundation of China[11975279] ; National Natural Science Foundation of China[11775316] ; National Natural Science Foundation of China[U1932139] ; National Natural Science Foundation of China[11961141004] ; National Natural Science Foundation of China[11735017] ; National Natural Science Foundation of China[12035011] ; National Natural Science Foundation of China[11965003] ; National Natural Science Foundation of China[11675225] ; National Natural Science Foundation of China[11635003] ; National Natural Science Foundation of China[U1867212] ; National Natural Science Foundation of China[11805289] ; National Natural Science Foundation of China[U1732139] ; National Natural Science Foundation of China[U2032138] ; National Natural Science Foundation of China[11775112] ; National Natural Science Foundation of China[12075286] ; Chinese Academy of Sciences[QYZDJ-SSW-SLH041] ; Youth Innovation Promotion Association CAS[2020409] ; Youth Innovation Promotion Association CAS[2017456] ; Natural Science Foundation of Guangxi[2017GXNSFAA 198160] ; Natural Science Foundation of Guangxi[2017GXNSFGA198001] ; Science Technology Facility Council (UK)
WOS关键词	LEVEL STRUCTURE ; SHELL-MODEL ; DECAY ; REGION
WOS研究方向	Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000652828400005
资助机构	Strategic Priority Research Program of Chinese Academy of Sciences ; National Key R&D Program of China ; National Natural Science Foundation of China ; Chinese Academy of Sciences ; Youth Innovation Promotion Association CAS ; Natural Science Foundation of Guangxi ; Science Technology Facility Council (UK)
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/137163]
专题	中国科学院近代物理研究所
通讯作者	Gan, Z. G.
作者单位	1.Univ York, Dept Phys, York YO10 5DD, N Yorkshire, England 2.Tongji Univ, Sch Phys Sci & Engn, Shanghai 200092, Peoples R China 3.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 4.Chinese Acad Sci, Inst Modern Phys, CAS Key Lab High Precis Nucl Spect, Lanzhou 730000, Peoples R China 5.Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China 6.Sun Yat Sen Univ, Sino French Inst Nucl Engn & Technol, Zhuhai 519082, Peoples R China 7.Royal Inst Technol KTH, Dept Phys, SE-10691 Stockholm, Sweden 8.Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan 9.Lanzhou Univ, Sch Nucl Sci & Technol, Lanzhou 730000, Peoples R China 10.Guangxi Normal Univ, Guangxi Key Lab Nucl Phys & Technol, Guilin 541004, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Z. Y.,Yang, H. B.,Huang, M. H.,et al. New alpha-Emitting Isotope U-214 and Abnormal Enhancement of alpha-Particle Clustering in Lightest Uranium Isotopes[J]. PHYSICAL REVIEW LETTERS,2021,126(15):6.
APA	Zhang, Z. Y..,Yang, H. B..,Huang, M. H..,Gan, Z. G..,Yuan, C. X..,...&Zhou, S. G..(2021).New alpha-Emitting Isotope U-214 and Abnormal Enhancement of alpha-Particle Clustering in Lightest Uranium Isotopes.PHYSICAL REVIEW LETTERS,126(15),6.
MLA	Zhang, Z. Y.,et al."New alpha-Emitting Isotope U-214 and Abnormal Enhancement of alpha-Particle Clustering in Lightest Uranium Isotopes".PHYSICAL REVIEW LETTERS 126.15(2021):6.