Eur. Phys. J. A (2004) 21: 257-263
https://doi.org/10.1140/epja/i2003-10205-1

Production and decay of the isotope ²⁷¹ Ds (Z = 110)

¹ RIKEN (The Institute of Physical and Chemical research), 351-0198, Wako-shi, Saitama, Japan
² Niigata University, 950-2181, Ikarashi, Niigata, Japan
³ Advanced Research Institute for Science and Engineering, Waseda University, Okubo, Shinjuku-ku, 169-8555, Tokyo, Japan
⁴ University of Tsukuba, 3058577, Tsukuba, Ibaragi, Japan
⁵ Institute of Modern Physics, Chinese Academy of Science, 730000, Lanzhou, PRC
⁶ Flerov Laboratory of Nuclear Reactions, JINR, RU-141 980, Dubna, Russia
⁷ Institute of High Energy Physics, Chinese Academy of Science, 100039, Beijing, PRC
⁸ School of Physics, Peking University, 100871, Beijing, PRC

^* e-mail: morita@rarfaxp.riken.go.jp

Abstract

Production and decay of the isotope ²⁷¹Ds were studied. The isotope was produced by ²⁰⁸Pb + ⁶⁴Ni ²⁷¹Ds + n reaction. Fourteen -decay chains have been assigned to decays originating from the isotope ²⁷¹Ds. An excitation function of the production of this isotope was measured. The results have provided a good confirmation of production and decay of ²⁷¹Ds reported by Hofmann et al. The presence of an isomeric state in ²⁷¹Ds has been confirmed. The existence of a possible isomeric state in ²⁶⁷Hs is presented.