Connolly Matthew, Bradley Peter, Slifka Andrew, Drexler Elizabeth
Applied Chemicals and Materials Division, Material Measurement Laboratory, National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA.
Rev Sci Instrum. 2017 Jun;88(6):063901. doi: 10.1063/1.4986471.
A gas-pressure chamber has been designed, constructed, and tested at a moderate pressure (3.4 MPa, 500 psi) and has the capability of mechanical loading of steel specimens for neutron scattering measurements. The chamber will allow a variety of in situ neutron scattering measurements: in particular, diffraction, quasielastic scattering, inelastic scattering, and imaging. The chamber is compatible with load frames available at the user facilities at the NIST Center for Neutron Research and Oak Ridge National Laboratory Spallation Neutron Source. A demonstration of neutron Bragg edge imaging using the chamber is presented.
已设计、建造并测试了一个气压室，其工作压力适中（3.4兆帕，500磅力/平方英寸），具备对钢试样进行机械加载以用于中子散射测量的能力。该气压室将允许进行各种原位中子散射测量：特别是衍射、准弹性散射、非弹性散射和成像。该气压室与美国国家标准与技术研究院中子研究中心和橡树岭国家实验室散裂中子源用户设施现有的加载框架兼容。本文展示了使用该气压室进行中子布拉格边缘成像的演示。
