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

doi:10.1103/PhysRevLett.126.152502

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	New alpha-Emitting Isotope U-214 and Abnormal Enhancement of alpha-Particle Clustering in Lightest Uranium Isotopes
	Zhang, Z. Y.; Yang, H. B.; Huang, M. H.; Gan, Z. G.; Yuan, C. X.; Qi, C.; Andreyev, A. N.; Liu, M. L.; Ma, L.; Zhang, M. M.
刊名	PHYSICAL REVIEW LETTERS
	2021
卷号	126 期号:15 页码:152502
关键词	LEVEL STRUCTURE SHELL-MODEL DECAY REGION
ISSN号	0031-9007
DOI	10.1103/PhysRevLett.126.152502
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.
学科主题	Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/27413]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.Li, G. S. 2.[Ren, Z. Z.] Tongji Univ, Sch Phys Sci & Engn, Shanghai 200092, Peoples R China 3.[Zhang, Z. Y. 4.Yang, H. B. 5.Huang, M. H. 6.Gan, Z. G. 7.Liu, M. L. 8.Ma, L. 9.Zhang, M. M. 10.Tian, Y. L.
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):152502.
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),152502.
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):152502.