A neutron counter designed for assay of radioactive materials has been adapted for beam experiments at TUNL. The cylindrical geometry and 60% maximum efficiency make it well suited for ($γ,n$) cross-section measurements near the neutron emission threshold. A high precision characterization of the counter has been made using neutrons from several sources. Using a combination of measurements and simulations, the absolute detection efficiency of the neutron counter was determined to an accuracy of $\pm$ 3% in the neutron energy range between 0.1 and 1 MeV. It is shown that this efficiency characterization is generally valid for a wide range of targets.
Results of measurements of an environment neutron background at BNO INR RAS objects with the helium proportional counter
本文介绍了在印度国家研究院的巴克桑中微子观测站测量环境中子本底的方法。测量是用填充有Ar(2at)+ $^3$ He(4at)的混合物的正比计数器进行的。给出了在BNO INR RAS地面和地下实验室获得的结果。结果表明,在4900 m w.e.与地球表面相比,在没有任何特殊屏蔽的情况下,深度减小了$\sim 260$倍。在5-1323.5 cm空气高度区域中的中子通量密度在确定误差内是恒定的并且等于$(7.1\pm0.1_{\rm{stat}}\pm0.3_{\rm{syst}})\times10^{-3}$ s $^{-1}\cdot$ cm $^{-2}$。
Recoil Proton Telescopes and Parallel Plate Avalanche Counters for the $^{235}$U(n,f) cross section measurement relative to H(n,n)H between 10 and 450 MeV neutron energy
ELIGANT-TN -- ELI Gamma Above Neutron Threshold: The Thermal Neutron setup
Extreme Light Infrastructure-Nuclear Physics (ELI-NP), Horia Hulubei National Institute for Physics and Nuclear Engineering (IFIN-HH)(极端光基础设施-核物理(ELI-NP),霍里亚·胡鲁贝伊国家物理与核工程研究所(IFIN-HH));Department of Nuclear Physics (DFN), Horia Hulubei National Institute for Physics and Nuclear Engineering (IFIN-HH)(霍里亚·胡鲁贝伊国家物理与核工程研究所(IFIN-HH)核物理系);Department of Physics, Faculty of Science, Istanbul University(伊斯坦布尔大学理学院物理学系);Department of Physics, Indian Institute of Technology(印度理工学院物理学系);Applied Nuclear Physics Department (DFNA), Horia Hulubei National Institute for Physics and Nuclear Engineering(霍里亚·胡鲁贝伊国家物理与核工程研究所应用核物理系);National Physical Laboratory(英国国家物理实验室);L.N. Gumilyov Eurasian National University(L.N. 古米廖夫欧亚国立大学)
A prototype neutron-detector array for future deep-underground s-process studies
Laboratori Nazionali del Gran Sasso, Istituto Nazionale di Fisica Nucleare(大萨索国家实验室,意大利国家核物理研究所);Goethe University Frankfurt(法兰克福歌德大学);Los Alamos National Laboratory(洛斯阿拉莫斯国家实验室)