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核子滴线外的不稳定原子核的研究是探测极端质子-中子比体系中核子相互作用与核结构的重要手段,其中质子滴线外的大量原子核以单质子放射性作为主要的衰变模式.使用形变的WoodsSaxon势和自旋-轨道耦合相互作用与多极展开的形变Coulomb势,构造了质子-子核两体相互作用,并基于量子隧穿模型和微观的Gamow态理论,以首个被实验发现的基态质子放射核之一的151Lu为例,展示了理论模型的计算过程,之后系统性地计算了目前实验观测到的大量质子放射性核的半衰期数据,并在使用不同核数据的情况下,对结果与实验值的相符性进行了对比,评估了质子放射性对衰变能和谱因子数据的依赖性.结果表明质子放射性对衰变能的依赖程度较高.此外,基于现有的实验观测结果,对下方相邻的fpg壳层中可能存在的一些更轻的质子放射核的半衰期进行了理论预言.以上计算结果被汇总为了目前比较全面地包括现有的质子放射核(50 < Z < 84)和理论预言的质子放射核(30 < Z < 50)半衰期的数据集,为实验上进一步探索质子滴线提供了理论参考.本文数据集可在科学数据银行https://www.doi.org/10.57760/sciencedb.27551中访问获取(审稿阶段请通过私有访问链接查看本文数据集https://www.scidb.cn/s/zQzA3e).The study of unstable nuclei beyond the nucleon drip line is an important method to study the nuclear interaction and structure in the extremely neutron- or proton-rich system, and various nuclides beyond the proton drip line mainly decay by spontaneous one-proton emission. Using the deformed Woods-Saxon potential, spin-orbit potential and the expanded Coulomb potential to construct the daughter-proton potential, based on the quantum tunneling model and the microscopic Gamow state theory, the half-lives data of various proton emitters are systematically calculated. By using nuclear data from different source and comparing to experiments, the dependence of proton emission on decay energy and spectroscopic factors is evaluated. Additionally, based on previous observations, the half-life of the possibly lighter proton emitter in the fpg-shell below has been theoretically predicted. Our results are compiled into a comprehensive dataset of half-lives for both experimentally confirmed emitters (50 < Z < 84) and theoretically predicted emitters (30 < Z < 50), providing a useful reference for future experimental investigations related to the proton drip line. The datasets presented in this paper, including our results of calculation, are openly available at https://www.doi.org/10.57760/sciencedb.27551 (Please use the private access link https://www.scidb.cn/s/zQzA3e to access the dataset during the peer review process).
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Keywords:
- Decay by proton emission /
- Lifetimes and widths
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