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arXiv 2407.01787physics.plasm-phnucl-thphysics.atom-ph
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离子和等离子体中的电子俘获与束缚态$\eta$衰变

Electron Capture and Bound-State $β$ Decays in Ions and Plasma

Bharat Mishra, Angelo Pidatella, Simone Taioli, Stefano Simonucci, David Mascali

AI总结:

提出一种结合Takahashi-Yokoi核模型与电荷态分布的新理论,用于描述离子和等离子体中电子俘获及束缚态$\eta$衰变,扩展了热力学参数空间,并适用于多种质量同位素。

摘要:

我们提出了一种新理论,用于描述原子离子和(非)局部热力学平衡((N)LTE)等离子体中电子俘获和束缚态$\eta$衰变的变化。我们采用Takahashi-Yokoi核模型并添加修正,首先计算同位素每种原子组态的衰变率,然后将其与与等离子体密度和温度一致的电荷态分布(CSD)相结合,评估等离子体内的衰变率。我们的方法扩展了可研究等离子体内$\eta$衰变的热力学参数空间,为在应用于恒星核合成之前在低密度实验室磁化等离子体中验证该模型提供了可能性。该模型以$^{7}$Be为例进行说明,然后应用于更高质量的同位素,如$^{140}$Pr$^{0+,57+,58+}$、$^{142}$Pm$^{0+,59+,60+}$和$^{163}$Dy$^{66+}$。因此,我们的模型适用于广泛质量范围内的同位素,无论是单电荷态还是等离子体生成的CSD。

英文摘要:

We present a new theory describing the variation of electron capture and bound-state $β$-decays in atomic ions and (non) local thermodynamic equilibrium ((N)LTE) plasmas. We adopt the Takahashi-Yokoi nuclear model with added corrections to first calculate the decay rate for each atomic configuration of the isotope, and then evaluate the in-plasma decay rate by combining them with the charge state distribution (CSD) consistent with plasma density and temperature. Our approach expands the thermodynamic parameter space in which in-plasma $β$-decays can be studied, opening the possibility to validate the model in low-density laboratory magnetoplasmas before application to stellar nucleosynthesis. The model is explained using $^{7}$Be, and then applied to higher mass isotopes such as $^{140}$Pr$^{0+,57+,58+}$, $^{142}$Pm$^{0+,59+,60+}$ and $^{163}$Dy$^{66+}$. Our model is therefore amenable to isotopes in a wide range of masses, in both single charge state or in a plasma-generated CSD.

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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