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arXiv 1706.04068nucl-th
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对合成$Z=119, 120$同位素感兴趣的核的Alpha decay

Alpha decay of nuclei interesting for synthesis of $Z=119, 120$ isotopes

D. N. Poenaru, R. A. Gherghescu

摘要:

四组(偶-偶、偶-奇、奇-偶和奇-奇)重核和超重核是用$Z=119, 120$合成同位素的重要核。我们报告使用四种模型计算$α$ ~衰变半衰期:AKRA(Akrawy); ASAF(分析超不对称裂变); UNIV(通用公式)和semFIS(基于裂变理论的半经验公式)。我们比较实验$Q_α$值与AME 16原子质量评价(只要可用)和理论模型WS 4,能够给质量尚未测量的核素。对于$^{300,302}$ 120的$^{92,94}$ Sr簇放射性,我们预测相对于$α$ ~衰变的分支比分别为-0.10和0.49,这意味着值得尝试检测与$α$ ~衰变竞争的这种衰变模式。

英文摘要:

Four groups (even-even, even-odd, odd-even and odd-odd) of heavy and super-heavy nuclei are of interest for the synthesis of the isotopes with $Z=119, 120$. We report calculations of $α$~decay half-lives using four models: AKRA (Akrawy); ASAF (Analytical Super-Asymmetric Fission); UNIV (Universal Formula), and semFIS (Semi-empirical formula based on Fission Theory). We compare the experimental $Q_α$ values either with AME16 atomic mass evaluation (whenever available) and with the theoretical model WS4, able to give masses of not yet measured nuclides. For $^{92,94}$Sr cluster radioactivity of $^{300,302}$120 we predict a branching ratio relative to $α$~decay of -0.10 and 0.49, respectively, meaning that it is worth trying to detect such kind of decay modes in competition with $α$~decay.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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