新核227Pu的放射性衰变性质

IF 0.4 Q4 PHYSICS, PARTICLES & FIELDS

Physics of Particles and Nuclei Letters Pub Date : 2025-05-14 DOI:10.1134/S1547477124702510

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

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引用次数: 0

摘要

通过26Mg + 204Pb和26Mg + 206Pb的完全聚变反应，发现了新的同位素227Pu。实验是在俄罗斯核研究中心Flerov核反应实验室SHE工厂的GRAND分离器上进行的。对于227Pu核，α粒子能量为e = 8156±26 keV，半衰期为Т1/2 = \(2.2_{{ - 0.3}}^{{ + 0.5}}\) s。用222U链确定了一个Eα = 8754±24 keV的单事件，估计半衰期的下限与实测寿命相差1 ms，这可能是由于新的同位素226Pu。

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Properties of Radioactive Decay of the New Nucleus 227Pu

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 E_α = 8156 ± 26 keV and a half-life of Т_1/2 = \(2.2_{{ - 0.3}}^{{ + 0.5}}\) s were measured. A single event with E_α = 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.

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来源期刊

Physics of Particles and Nuclei Letters PHYSICS, PARTICLES & FIELDS-

CiteScore

0.80

自引率

20.00%

发文量

108

期刊介绍： The journal Physics of Particles and Nuclei Letters, brief name Particles and Nuclei Letters, publishes the articles with results of the original theoretical, experimental, scientific-technical, methodological and applied research. Subject matter of articles covers: theoretical physics, elementary particle physics, relativistic nuclear physics, nuclear physics and related problems in other branches of physics, neutron physics, condensed matter physics, physics and engineering at low temperatures, physics and engineering of accelerators, physical experimental instruments and methods, physical computation experiments, applied research in these branches of physics and radiology, ecology and nuclear medicine.