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. |
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