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李路琦, 张根, 蔡军军, 周立林, 张丰收. 探究在质子蒸发道中产生超重核的可行性[J]. 原子核物理评论, 2024, 41(1): 346-351. DOI: 10.11804/NuclPhysRev.41.2023CNPC30
引用本文: 李路琦, 张根, 蔡军军, 周立林, 张丰收. 探究在质子蒸发道中产生超重核的可行性[J]. 原子核物理评论, 2024, 41(1): 346-351. DOI: 10.11804/NuclPhysRev.41.2023CNPC30
Luqi LI, Gen ZHANG, Junjun CAI, Lilin ZHOU, Fengshou ZHANG. Exploring the Feasibility of Producing Superheavy Nuclei in the Proton Evaporation Channel[J]. Nuclear Physics Review, 2024, 41(1): 346-351. DOI: 10.11804/NuclPhysRev.41.2023CNPC30
Citation: Luqi LI, Gen ZHANG, Junjun CAI, Lilin ZHOU, Fengshou ZHANG. Exploring the Feasibility of Producing Superheavy Nuclei in the Proton Evaporation Channel[J]. Nuclear Physics Review, 2024, 41(1): 346-351. DOI: 10.11804/NuclPhysRev.41.2023CNPC30

探究在质子蒸发道中产生超重核的可行性

Exploring the Feasibility of Producing Superheavy Nuclei in the Proton Evaporation Channel

  • 摘要: 在双核系统(DNS)模型下系统地研究了质子蒸发道中产生超重核的可行性。由于Z=114质子壳层的存在,在质子蒸发道中合成Fl同位素是合适的。在本工作中只考虑了先蒸发一个质子,然后蒸发n个中子的情况,其他情况由于截面太小而被忽略。与50Ti+243Np和54Cr+239Pa反应相比,未知290, 291Fl同位素在38S+255Es反应中的产生截面最高,最大截面分别为1.1和15.1 pb。未来随着放射性束设施的升级,42S+254Es是接近稳定岛的一个有希望的弹靶体系,该反应中291−294Fl的产生截面估计分别为3.2、6.0、4.0和0.1 pb。

     

    Abstract: The feasibility of producing superheavy nuclei in proton evaporation channels was systematically studied within the dinuclear system (DNS) model. Due to the Z = 114 proton-shell, one can synthesize Fl isotopes in proton evaporation channels. We only considered the case of evaporating one proton first and then n neutrons in this work, other cases were ignored due to the small cross-section. The production cross sections of unknown isotopes 290, 291Fl in 38S+255Es reaction are the highest compared with 50Ti+243Np and 54Cr+239Pa reactions, and the maximum cross sections are 1.1 and 15.1 pb, respectively. 42S+254Es is a promising candidate to approach the island of stability as the radioactive beam facilities are upgraded in the future, and the production cross sections of 291−294Fl in that reaction are estimated to be 3.2, 6.0, 4.0, and 0.1 pb, respectively.

     

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