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Abstract <p>A new isotope <sup>227</sup>Pu was discovered by complete fusion reactions <sup>26</sup>Mg + <sup>204</sup>Pb and <sup>26</sup>Mg + <sup>206</sup>Pb. The experiment was carried out at the GRAND separator of the SHE Factory at Flerov Laboratory of Nuclear Reactions, JINR. For the nucleus <sup>227</sup>Pu, an α-particle energy of <i>E</i><sub>α</sub> = 8156 ± 26 keV and a half-life of <i>Т</i><sub>1/2</sub> = <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11497_2025_10075_Article_IEq1.gif" Format="GIF" Height="22" Rendition="HTML" Resolution="72" Type="Linedraw" Width="46" /> </InlineMediaObject> <EquationSource Format="TEX">\(2.2_{{ - 0.3}}^{{ + 0.5}}\)</EquationSource> <!--PhysPNLt2470251Kuznetsova-m1--> </InlineEquation> s were measured. A single event with <i>E</i><sub>α</sub> = 8754 ± 24 keV and an estimated lower limit half-life of 1 ms from the measured lifetime, which is probably attributed to the new isotope <sup>226</sup>Pu, was identified by chain with <sup>222</sup>U.</p>

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Properties of Radioactive Decay of the New Nucleus 227Pu

  • 期刊论文

  • 发表日期：

    2025年4月1日

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  • A. A. Kuznetsova,
  • A. I. Svirikhin,
  • A. V. Isaev,
  • M. A. Bychkov,
  • V. D. Danilkin,
  • H. M. Devaraja,
  • N. I. Zamyatin,
  • I. N. Izosimov,
  • Z. Liu,
  • O. N. Malyshev,
  • R. S. Mukhin,
  • A. G. Popeko,
  • Yu. A. Popov,
  • V. A. Rachkov,
  • B. Sailaubekov,
  • E. A. Sokol,
  • M. S. Tezekbaeva,
  • I. I. Ulanova,
  • F. Zhang,
  • V. I. Chepigin,
  • M. L. Chelnokov,
  • A. V. Yeremin

摘要

Abstract

A new isotope 227Pu was discovered by complete fusion reactions 26Mg + 204Pb and 26Mg + 206Pb. The experiment was carried out at the GRAND separator of the SHE Factory at Flerov Laboratory of Nuclear Reactions, JINR. For the nucleus 227Pu, an α-particle energy of Eα = 8156 ± 26 keV and a half-life of Т1/2 = \(2.2_{{ - 0.3}}^{{ + 0.5}}\) s were measured. A single event with Eα = 8754 ± 24 keV and an estimated lower limit half-life of 1 ms from the measured lifetime, which is probably attributed to the new isotope 226Pu, was identified by chain with 222U.