• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>International Workshop on the New Applications of Nuclear Fission >INVESTIGATION OF GEV PROTON-INDUCED SPALLATION REACTIONS
【24h】

INVESTIGATION OF GEV PROTON-INDUCED SPALLATION REACTIONS

机译：GEV质子诱导的椎间露纺合反应的研究

获取原文
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A reliable modeling of GeV proton-induced spallation reactions is indispensable for the design of the spallation module and the target station of future accelerator driven hybrid reactors (ADS) or spallation neutron sources (ESS), in particular, to provide precise predictions for the neutron production, the radiation damage of materials (window), and the production of radioactivity (~3H, ~7Be etc.) in the target medium. Detailed experimental nuclear data are needed for sensitive validations and improvements of the models, whose predictive power is strongly dependent on the correct physical description of the three main stages of a spallation reaction: (ⅰ) the Intra-Nuclear-Cascade (INC) with the fast heating of the target nucleus, (ⅱ) the de-excitation due to pre-equilibrium emission including the possibility of multi-fragmentation, and (ⅲ) the statistical decay of thermally excited nuclei by evaporation of light particles and fission in the case of heavy nuclei. Key experimental data for this endeavor are absolute production cross sections and energy spectra for neutrons and light charged-particles (LCPs), emission of composite particles prior and post to the attainment of an equilibrated system, distribution of excitation energies deposited in the nuclei after the INC, and fission probabilities. Systematic measurements of such data are furthermore needed over large ranges of target nuclei and incident proton energies. Such data has been measured with the NESSI detector. An overview of new and previous results will be given.
机译：GEV质子诱导的椎间化反应的可靠造型对于设计的介绍模块和未来加速器驱动的混合反应器（ADS）或初始中子源（ESS）的目标站是必不可少的，特别是为中子提供精确的预测生产，材料（窗口）的辐射损伤，以及靶培养基中的放射性（〜3h，〜7be等）的产生。需要详细的实验核数据来进行敏感验证和改进模型，其预测性能强烈依赖于介质反应的三个主要阶段的正确物理描述：（Ⅰ）内核级联（INC）与靶核的快速加热，（Ⅱ）由于预平衡排放引起的脱离激发，包括多碎片化的可能性，（Ⅲ）通过蒸发光颗粒和裂变的热激发核的统计衰减重核。用于这种努力的关键实验数据是用于中子和光电颗粒（LCP）的绝对生产横截面和能谱，在经过衡量的系统中，复合颗粒的发射，复合粒子的发射，在核中沉积在核中的激发能量分布公司和裂变概率。此外，在大型目标核和事件质子能量的大范围内需要进行这些数据的系统测量。使用Nessi探测器测量了这些数据。将给出新的和以前结果的概述。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号