RIPL - Reference Input Parameter Library for Calculation of Nuclear Reactions and Nuclear Data Evaluations
RIPL - Reference Input Parameter Library for Calculation of Nuclear Reactions and Nuclear Data Evaluations
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DOI：
10.1016/j.nds.2009.10.004
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发表时间：
2009-12-01
影响因子：
3.7
通讯作者：
Talou, P.
中科院分区：
文献类型：
--
作者：
Capote, R.;Herman, M.;Talou, P.
我们描述了参考输入参数库中包含的物理和数据，该库专门用于核反应计算和核数据评估所需的输入参数。先进的建模代码需要大量的数字输入，因此，自1993年以来，国际原子能机构(原子能机构)一直在广泛开展工作，建立一个有效的核模型输入参数资料库，称为参考输入参数资料库。在通过原子能机构连续三个项目进行了15年的具有挑战性的工作之后，RIPL的最后一个协调研究项目(RIPL-3)于2008年12月圆满结束。RIPL-3库于2009年1月发布，可通过http://www-nds.iaea.org/RIPL-3/.在网上获得这项工作和由此产生的数据库对参与开发和使用核反应模型(ALICE、EMPIRE、GNASH、UNF、TALYS)的理论家来说极其重要，既用于理论研究，也用于核数据评估。RIPL-3中包含的数值数据和计算机程序分为七个部分：MASS包含大约9000个原子核的基态性质，包括三个质量的理论预测和Audi等人估计的实验质量。(2003)。离散能级包含117个数据集(每个元素一个)，其中包含2007年10月ENSDF提供的所有已知能级方案、电磁和伽马射线衰变概率。中子共振包含根据Ignatyuk和Mughabghab进行的评估编制的平均共振参数。光学模型包含495组定义在宽能量范围内的唯象光学模型参数。当没有足够的实验数据时，评估者必须求助于全局参数化或微观方法。将用作微观计算输入的径向密度分布存储在质量段中。能级密度包含基于修正的费米气体和超流体模型的唯象参数，以及基于真实微观单粒子能级方案的微观计算。还推荐了偏能级密度公式。所有列出的总能级密度与推荐的平均中子共振参数和离散能级都是一致的。伽马包含量化巨共振的参数、实验伽马射线强度函数和统计模型代码中计算伽马发射的方法。从V-51到Pu-239的102个核素的光吸收截面用洛伦兹拟合法表示。裂变包括基于受实验裂变截面约束的微观HFB计算的裂变势垒和裂变鞍点处的核能级密度的全球处方。
We describe the physics and data included in the Reference Input Parameter Library, which is devoted to input parameters needed in calculations of nuclear reactions and nuclear data evaluations. Advanced modelling codes require substantial numerical input, therefore the International Atomic Energy Agency (IAEA) has worked extensively since 1993 on a library of validated nuclear-model input parameters, referred to as the Reference Input Parameter Library (RIPL). A final RIPL coordinated research project (RIPL-3) was brought to a successful conclusion in December 2008, after 15 years of challenging work carried out through three consecutive IAEA projects. The RIPL-3 library was released in January 2009, and is available on the Web through http://www-nds.iaea.org/RIPL-3/. This work and the resulting database are extremely important to theoreticians involved in the development and use of nuclear reaction modelling (ALICE, EMPIRE, GNASH, UNF, TALYS) both for theoretical research and nuclear data evaluations. The numerical data and computer codes included in RIPL-3 are arranged in seven segments: MASSES contains ground-state properties of nuclei for about 9000 nuclei, including three theoretical predictions of masses and the evaluated experimental masses of Audi et al. (2003). DISCRETE LEVELS contains 117 datasets (one for each element) with all known level schemes, electromagnetic and gamma-ray decay probabilities available from ENSDF in October 2007. NEUTRON RESONANCES contains average resonance parameters prepared on the basis of the evaluations performed by Ignatyuk and Mughabghab. OPTICAL MODEL contains 495 sets of phenomenological optical model parameters defined in a wide energy range. When there are insufficient experimental data, the evaluator has to resort to either global parameterizations or microscopic approaches. Radial density distributions to be used as input for microscopic calculations are stored in the MASSES segment. LEVEL DENSITIES contains phenomenological parameterizations based on the modified Fermi gas and superfluid models and microscopic calculations which are based on a realistic microscopic single-particle level scheme. Partial level densities formulae are also recommended. All tabulated total level densities are consistent with both the recommended average neutron resonance parameters and discrete levels. GAMMA contains parameters that quantify giant resonances, experimental gamma-ray strength functions and methods for calculating gamma emission in statistical model codes. The experimental GDR parameters are represented by Lorentzian fits to the photo-absorption cross sections for 102 nuclides ranging from V-51 to Pu-239. FISSION includes global prescriptions for fission barriers and nuclear level densities at fission saddle points based on microscopic HFB calculations constrained by experimental fission cross sections.