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首页> 外文期刊>Nuclear Technology >ENDF70: A CONTINUOUS-ENERGY MCNP NEUTRON DATA LIBRARY BASED ON ENDF/B-VII.0
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ENDF70: A CONTINUOUS-ENERGY MCNP NEUTRON DATA LIBRARY BASED ON ENDF/B-VII.0

机译：ENDF70：基于ENDF / B-VII.0的连续能量MCNP中子数据库

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摘要

Following the release of ENDF/B-VII.0 evaluations, an ACE-formatted continuous-energy neutron data library called ENDF70 for MCNP has been produced at Los Alamos National Laboratory. This new library contains data for 387 isotopes and three elements at five temperatures: 293.6, 600, 900, 1200, and 2500 K. It can be obtained as part of the MCNP5 1.50 release. The new library was created using ENDF/B-VII.0 neutron evaluations and primarily version 248 of NJOY99. A processing script was created that set up the input files for NJOY and employed checking codes to test the content of the processed data. A sample MCNP run was performed for each isotope and temperature, and cross sections for each isotope were plotted to make sure there were no major problems. The processed ACE libraries did not always pass all quality assurance tests. For example, energy-rnbalance problems were identified for several evaluations having negative heating numbers or inconsistencies between total and partial heating. Similarly, some problems were found with unresolved resonance probability tables, resulting in probability tables being excluded from the final library for several materials. Certain evaluations were modified and reprocessed as a result of the quality assurance tests, and some data points in the final ACE files were changed because they were too small or had other problems. The new ENDF70 library provides MCNP users with the latest ENDF/B data available. This collection of data includes a larger range of isotopes and temperatures than previously released, which will be beneficial in numerous applications. The upgrades included as part of ENDF/B-VII.0 and, hence, ENDF70 should improve calculations.
机译：在发布ENDF / B-VII.0评估之后，洛斯阿拉莫斯国家实验室已经建立了ACE格式的连续能量中子数据库ENDF70，用于MCNP。这个新库包含在五个温度下的387种同位素和三种元素的数据：293.6、600、900、1200和2500K。可以作为MCNP5 1.50版本的一部分获得。新库是使用ENDF / B-VII.0中子评估和主要的NJOY99版本248创建的。创建了一个处理脚本，该脚本为NJOY设置了输入文件，并使用了检查代码来测试已处理数据的内容。针对每种同位素和温度进行了样品MCNP运行，并绘制了每种同位素的横截面图，以确保没有主要问题。处理后的ACE库并不总是通过所有质量保证测试。例如，针对几次评估发现了能量失衡问题，这些评估具有负加热数或总供热与部分供热之间的不一致。同样，未解决的共振概率表也发现了一些问题，导致概率表从几种材料的最终库中排除。由于质量保证测试，对某些评估进行了修改和重新处理，并且最终ACE文件中的某些数据点由于它们太小或存在其他问题而被更改。新的ENDF70库为MCNP用户提供了可用的最新ENDF / B数据。与以前发布的数据相比，此数据收集包括更大范围的同位素和温度，这在许多应用中将是有益的。升级是ENDF / B-VII.0的一部分，因此ENDF70应该会改进计算。

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  • 来源
    《Nuclear Technology》 |2009年第3期|832-836|共5页
  • 作者

    HOLLY R. TRELLUE; ROBERT C. LITTLE; MORGAN C. WHITE; ROBERT E. MacFARLANE; A. C. KAHLER;

  • 作者单位

    Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87545;

    Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87545;

    Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87545;

    Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87545;

    Los Alamos National Laboratory, P.O. Box 1663, Los Alamos, New Mexico 87545;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    ENDF70; NJOY; ENDF/B-VII.0;

    机译：ENDF70;NJOY;ENDF / B-VII.0;

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