α decay of the new neutron-deficient isotope 205Ac

Z. Y. Zhang (张志远), Z. G. Gan (甘再国), L. Ma (马龙), L. Yu (郁琳), H. B. Yang (杨华彬), T. H. Huang (黄天衡), G. S. Li (李广顺), Y. L. Tian (田玉林), Y. S. Wang (王永生), X. X. Xu (徐新星), X. L. Wu (吴晓蕾), M. H. Huang (黄明辉), C. Luo (罗成), 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 89, 014308 – Published 13 January 2014

Abstract

The new neutron-deficient isotope 205Ac was synthesized in the complete-fusion reaction 169Tm(40Ca, 4n)205Ac. The evaporation residues were separated in-flight by the gas-filled recoil separator SHANS in Lanzhou and subsequently identified by the α-α position and time correlation method. The α-decay energy and half-life of 205Ac were determined to be 7.935(30) MeV and 209+97 ms, respectively. Previously reported decay properties of the ground state in 206Ac were confirmed.

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  • Received 1 December 2013

DOI:https://doi.org/10.1103/PhysRevC.89.014308

©2014 American Physical Society

Authors & Affiliations

Z. Y. Zhang (张志远)1, Z. G. Gan (甘再国)1,*, L. Ma (马龙)1,2,3, L. Yu (郁琳)1,2, H. B. Yang (杨华彬)1,2,3, T. H. Huang (黄天衡)1, G. S. Li (李广顺)1, Y. L. Tian (田玉林)1, Y. S. Wang (王永生)1, X. X. Xu (徐新星)4, X. L. Wu (吴晓蕾)1, M. H. Huang (黄明辉)1,5, C. Luo (罗成)1, Z. Z. Ren (任中洲)6,7, S. G. Zhou (周善贵)7,8, 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
  • 4China Institute of Atomic Energy, Beijing 102413, China
  • 5Nishina Center for Accelerator-Based Science, RIKEN, Wako, Saitama 351-0198, Japan
  • 6Department of Physics, Nanjing University, Nanjing 210093, China
  • 7Center of Theoretical Nuclear Physics, National Laboratory of Heavy-Ion Accelerator, Lanzhou 730000, China
  • 8State 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. 89, Iss. 1 — January 2014

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