New Isotope Np-220: Probing the Robustness of the N=126 Shell Closure in Neptunium

doi:10.1103/PhysRevLett.122.192503

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	New Isotope Np-220: Probing the Robustness of the N=126 Shell Closure in Neptunium
	Zhang, ZY ; Gan, ZG ; Yang, HB ; Ma, L ; Huang, MH ; Yang, CL ; Zhang, MM ; Tian, YL ; Wang, YS ; Sun, MD
刊名	PHYSICAL REVIEW LETTERS
	2019
卷号	122 期号:19 页码:192503
关键词	DECAY PROPERTIES NUCLEAR SEPARATOR STATE
ISSN号	0031-9007
DOI	10.1103/PhysRevLett.122.192503
英文摘要	A new short-lived neutron-deficient isotope Np-220 was synthesized in the fusion-evaporation reaction Re-185(Ar-40, 5n)Np-220 at the gas-filled recoil separator SHANS. Based on the measurement of the correlated alpha-decay chains, the decay properties of Np-220 with E-alpha = 10040(18) keV and T-1/2 = 25(-7)(+14 )mu s were determined, which are in good agreement with theoretical predictions. From the new experimental results coupled with the recently reported alpha-decay data of Np-219,Np-223, the alpha-decay systematics for Np isotopes around N = 126 was established, which allows us for the first time to test the robustness of the N = 126 shell closure in Z = 93 Np isotopes. The results also indicate that, in the region of nuclei with Z >= 83, the proton drip line has been reached for all odd-Z isotopes up to Np.
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/311006/23431]
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.[Sun, M. D.] Chinese Acad Sci, Shenzhen Inst Adv Technol, Shenzhen 518055, Peoples R China 2.[Zhou, S. G.] Ctr Theoret Nucl Phys, Natl Lab Heavy Ion Accelerator, Lanzhou 730000, Peoples R China 3.[Tsyganov, Yu. S. 4.Voinov, A. A. 5.Polyakov, A. N.] Joint Inst Nucl Res, RU-141980 Dubna, Russia 6.[Zhang, Z. Y. 7.Gan, Z. G. 8.Yang, H. B. 9.Ma, L. 10.Huang, M. H.
推荐引用方式 GB/T 7714	Zhang, ZY,Gan, ZG,Yang, HB,et al. New Isotope Np-220: Probing the Robustness of the N=126 Shell Closure in Neptunium[J]. PHYSICAL REVIEW LETTERS,2019,122(19):192503.
APA	Zhang, ZY.,Gan, ZG.,Yang, HB.,Ma, L.,Huang, MH.,...&Polyakov, AN.(2019).New Isotope Np-220: Probing the Robustness of the N=126 Shell Closure in Neptunium.PHYSICAL REVIEW LETTERS,122(19),192503.
MLA	Zhang, ZY,et al."New Isotope Np-220: Probing the Robustness of the N=126 Shell Closure in Neptunium".PHYSICAL REVIEW LETTERS 122.19(2019):192503.