$\ensuremath{\alpha}$-decay properties of the new isotope $^{216}\mathrm{U}$

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$α$ -decay properties of the new isotope ${}^{216}U$

L. Ma (马龙), Z. Y. Zhang (张志远), Z. G. Gan (甘再国), H. B. Yang (杨华彬), L. Yu (郁琳), J. Jiang (姜舰), J. G. Wang (王建国), Y. L. Tian (田玉林), Y. S. Wang (王永生), S. Guo (郭松), B. Ding (丁兵), Z. Z. Ren (任中洲), S. G. Zhou (周善贵), X. H. Zhou (周小红), H. S. Xu (徐瑚珊), and G. Q. Xiao (肖国青)

Phys. Rev. C 91, 051302(R) – Published 28 May 2015

Abstract

The new neutron-deficient isotope ${}^{216}U$ was produced in the complete-fusion reaction ${}^{180}W ({}^{40}{Ar}, 4 n) {}^{216}U$ . The evaporation residues were separated from the primary beam in flight by the gas-filled recoil separator Spectrometer for Heavy Atoms and Nuclear Structure. The activities have been identified by the $α − α$ position and time correlation measurements. Two $α$ -decaying states with $E_{α} = 8384 (30)$ keV, $T_{1 / 2} = 4 . 72_{- 1.57}^{+ 4.72}$ ms for the ground state and $E_{α} = 10582 (30)$ keV, $T_{1 / 2} = 0 . 74_{- 0.29}^{+ 1.34}$ ms for an isomeric state were identified in ${}^{216}U$ .

Received 9 April 2015

DOI:https://doi.org/10.1103/PhysRevC.91.051302

Authors & Affiliations

L. Ma (马龙)^1,2,3, Z. Y. Zhang (张志远)¹, Z. G. Gan (甘再国)^1,*, H. B. Yang (杨华彬)^1,2,3, L. Yu (郁琳)^1,2, J. Jiang (姜舰)^1,2, J. G. Wang (王建国)¹, Y. L. Tian (田玉林)¹, Y. S. Wang (王永生)¹, S. Guo (郭松)¹, B. Ding (丁兵)¹, Z. Z. Ren (任中洲)^4,5, S. G. Zhou (周善贵)^5,6, X. H. Zhou (周小红)¹, H. S. Xu (徐瑚珊)¹, and G. Q. Xiao (肖国青)¹

¹Key Laboratory of High Precision Nuclear Spectroscopy and Center for Nuclear Matter Science, Institute of Modern Physics, Chinese Academy of Sciences, Lanzhou 730000, China
²University of Chinese Academy of Sciences, Beijing 100049, China
³School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
⁴Department of Physics, Nanjing University, Nanjing 210093, China
⁵Center of Theoretical Nuclear Physics, National Laboratory of Heavy-Ion Accelerator, Lanzhou 730000, China
⁶State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190, China

^*zggan@impcas.ac.cn

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Vol. 91, Iss. 5 — May 2015

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Physical Review C

covering nuclear physics

$α$ -decay properties of the new isotope ${}^{216}U$

Phys. Rev. C 91, 051302(R) – Published 28 May 2015

Abstract

Authors & Affiliations

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Physical Review C

covering nuclear physics

α-decay properties of the new isotope U216

Phys. Rev. C 91, 051302(R) – Published 28 May 2015

Abstract

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$α$ -decay properties of the new isotope ${}^{216}U$