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引用次数: 0
摘要
汤川加指数模型(YEM)是液滴模型的改进形式,其中包含短程相互作用和表面扩散参数。我们在以前的工作中[Mehana 和 Rajeswari 在 Eur. Phys. J. A 59, 104 (2023)]研究了 YEM 中球形原子核的双质子(2p)放射性。本研究是前一项工作的延伸,将模型应用于变形 2p 发射体。变形是通过库仑势和尤卡娃相互作用势纳入 YEM 的。与球形半衰期相比,计算得出的半衰期与实验半衰期的偏差较小。此外,还预测了尚未进行实验研究的 2p 发射器的半衰期。计算得出的半衰期与其他理论模型预测的半衰期非常吻合。可以看出,长球形子核的半衰期低于相同母核的球形子核,而扁球形子核的半衰期高于球形子核。
Two-proton emission within a deformed Yukawa-plus-exponential model
The Yukawa-plus-exponential model (YEM) is the modified form of liquid drop model incorporating parameter to include short-range interaction and surface diffuseness. We have studied two-proton (2p) radioactivity within the YEM for spherical nuclei in our previous work [Mehana and Rajeswari in Eur. Phys. J. A 59, 104 (2023)]. The present study is the extension of the previous work to apply the model to deformed 2p emitters. Deformation is incorporated in YEM through Coulomb potential and Yukawa interaction potential. The calculated half-lives are found to have less deviation than experimental half-lives, when compared to spherical ones. Further, half-lives are also predicted for 2p emitters which are not yet studied experimentally. The calculated half-lives show good match with half-lives predicted by other theoretical models. It is seen that the half-lives of the prolate-shaped daughter nuclei are lower than spherical nuclei of the same parent, whereas the half-lives of oblate daughters are higher than that of the spherical ones.
期刊介绍:
Pramana - Journal of Physics is a monthly research journal in English published by the Indian Academy of Sciences in collaboration with Indian National Science Academy and Indian Physics Association. The journal publishes refereed papers covering current research in Physics, both original contributions - research papers, brief reports or rapid communications - and invited reviews. Pramana also publishes special issues devoted to advances in specific areas of Physics and proceedings of select high quality conferences.