论文标题
布里肯探测器的效率校准：世界最大的beta中子的计数器
Efficiency calibration of the BRIKEN detector: the world largest counter for beta-delayed neutrons
论文作者
论文摘要
通过快速中子捕获（R-Process），β延迟的中子发射在比铁重的元素的爆炸性核合成中起着基本作用。与贝塔（Beta）延迟的中子核检测有关的最雄心勃勃的项目是由Riken Nishima中心的布里肯（Briken）合作进行的。在这项工作中，介绍了对布里肯项目的简要描述。描述了一种使用未校准的252CF中子源的快速中子的Briken中子反效率精确表征的方法。该方法依赖于众所周知的中子多重性分布和相关计数方法。提出了对Briken Neutron计数器和Riken Nishina Center的252 CF中子源的详细实验研究。这项工作的结果是确定了拳击中子柜台的中子检测效率，其精度很高。
Beta-delayed neutron emission plays a fundamental role in the explosive nucleosynthesis of elements heavier than iron by the rapid neutron capture (r-process). The most ambitious project related to beta-delayed neutron detection of very exotic nuclei is carried out by the BRIKEN collaboration at RIKEN Nishima Center. In this work, a brief description of the BRIKEN project is presented. A methodology for the precise characterization of the BRIKEN neutron counter efficiency, for fast neutrons, using an uncalibrated 252Cf neutron source is described. The method relies on the well-known neutron multiplicity distribution of such source and correlation counting method. A detailed experimental study with the BRIKEN neutron counter and a 252 Cf neutron source at the RIKEN Nishina center is presented. The result of this work is the determination of the neutron detection efficiency of the BRIKEN neutron counter with high accuracy.
