TENDL-astro: A New Nuclear Data Set for Astrophysics Interest

D. Rochman,A. Koning,S. Goriely,S. Hilaire

NUCLEAR PHYSICS A（2025）

Paul Scherrer Inst | IAEA | Univ Libre Bruxelles | CEA

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Abstract

In this work, we are presenting a new database of astrophysical interest, based on calculations performed with the nuclear reaction code TALYS. Four quantities are systematically calculated for over 8000 nuclides: cross sections, reaction rates, Maxwellian Averaged Cross Sections (or MACS) at 30 key and partition functions. For cross sections and reaction rates, nine reactions are considered, induced by neutron, proton or alpha. The main complement of this database compared to existing ones is that the impact of reaction models ( e.g. level density, gamma strength function, and optical model) is estimated by varying 9 different models, and by proposing calculated values for each of them, together with averages, standard deviations and other statistical quantities. This new database, called TENDL-astro, version 2023, is available online (https://tendl .web .psi .ch / tendl _2023 /astro /astro .html) and linked to the well-known TENDL database, used in a variety of applications.

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Key words

TENDL,TALYS,Astrophysics,Reaction rates

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【要点】：本文介绍了基于TALYS核反应代码计算的新型天体物理兴趣核数据集TENDL-astro，其特点在于对反应模型影响进行了量化评估。

【方法】：研究通过TALYS代码对8000多个核素进行了系统的计算，包括9种由中子、质子或α粒子引发的反应的截面和反应率等。

【实验】：实验涉及构建TENDL-astro数据库，包含不同反应模型计算结果及其统计量，数据集可通过网页链接访问。