The European Activation File: EAF-2005 cross section library
The European Activation File: EAF-2005 cross section library
复制标题
DOI：
--
复制
发表时间：
2005
期刊：
影响因子：
--
通讯作者：
R. Forrest;J. Kopecký;J. Sublet
中科院分区：
文献类型：
--
作者：
R. Forrest;J. Kopecký;J. Sublet
在欧洲核聚变计划中，安全和环境问题对发电厂的持续发展至关重要。为了支持这一计划，需要一个健全、完整和可靠的中子诱导截面数据库。欧洲激活文件（EAF）项目是一个持续的过程，通过欧洲和世界范围的合作，导致了后续EAF版本的创建。最新发布的EAF-2005与之前的版本相比有了重大的变化，它的能量上限为60 MeV，而不是20 MeV。EAF2005得益于全面激活文件的生成和维护以及处理代码SAFEPAQ-II的开发。在EAF-4文件上开始的针对实验数据和系统数据的横截面验证练习可以对数据进行全面评估。SAFEPAQII用于对原始源数据进行一系列修改。一组非常重要的修改涉及使用实验或系统数据的重整和分支。总共有7268个反应发生了这样的变化；12%的反应。当源包含具有能量依赖分支比的非阈值反应时，这些是具有挑战性的任务。虽然EAF-2005是世界上验证最好的截面库，但目前只有不到3%的反应可以与实验信息进行比较，而且有时只能在非常有限的能量范围内进行比较，而且并不总是与聚变相关。与EAF-2001和-2003一样，利用积分实验结果对数据进行了校正、调整和验证。这可以通过使用SAFEPAQ-II输入测量的有效截面来完成。利用积分数据与各种材料在核聚变相关中子谱下的测量结果进行了直接比较。在ENEA FNG、FZK等时回旋加速器、Sergiev Posad sng -13、TUD、Ře /和JAERI FNS上进行了辐照，并进行了积分C/E比较（C/E是库与实验值的比值）。这些基准测试的结果结合不同的数据表明，可以对数据进行修改。EAF-2005库包含62,637个激发函数，涉及775个不同的目标，从H到Fm，原子序数1到100，能量范围为10 eV到60 MeV。然后将构成点方向文件的347.2万行处理成具有不同微通量加权谱的多个组方向文件，以满足各种用户需求。独特的是，还提供了一个不确定性文件，用于量化对每个反应通道的数据的置信度。
In the European fusion programme, safety and environmental issues are of great importance in the continuing development of power plants. In support of this programme, a sound, complete and reliable neutron-induced cross section data library is required. The European Activation File (EAF) project has been an ongoing process performed through European and world-wide co-operation that has led to the creation of succeeding EAF versions. The latest release, EAF-2005, in a significant change from previous versions has an upper energy limit of 60 rather than 20 MeV. EAF2005 has benefited from the generation and maintenance of comprehensive activation files and the development of the processing code SAFEPAQ-II. Cross section validation exercises against both experimental data and systematics, which were started on the EAF-4 file, enable a comprehensive assessment of the data. SAFEPAQII is used to apply a series of modifications to the original source data. A very important set of modifications concerns renormalisation and branching using experimental or systematic data. A total of 7,268 reactions have been so changed; 12% of all the reactions. These are challenging tasks when the source contains nonthreshold reactions with an energy dependent branching ratio. Although EAF-2005 is the best-validated cross section library in the world, currently less than 3% of all the reactions can be compared with experimental information, and sometimes then only for very limited, and not always fusion relevant, energy ranges. As with EAF-2001 and -2003, results of integral experiments have been used to correct, adjust and validate data. This can be done using SAFEPAQ-II by inputting the measured effective cross sections. Validation using integral data has been performed by means of direct comparison with measurements of various materials under fusionrelevant neutron spectra. Irradiations have been carried out at ENEA FNG, FZK Isochron-cyclotron, Sergiev Posad SNEG-13, TUD, Ře and JAERI FNS and integral C/E comparisons made (C/E is the ratio of the library to the experimental value). The results of these benchmarking exercises have indicated, in conjunction with differential data, where modifications to the data can be applied. The EAF-2005 library contains 62,637 excitation functions involving 775 different targets from H to Fm, atomic numbers 1 to 100, in the energy range 10 eV to 60 MeV. The 3,472,000 lines that make up the point-wise file are then processed into numerous group-wise files with different micro-flux weighting spectra to meet various user needs. Uniquely, an uncertainty file is also provided that quantifies the degree of confidence placed on the data for each reaction channel.