First neutron Bragg-edge imaging experimental results at CSNS*
Jie Chen, Zhijian Tan, Weiqiang Liu, Sihao Deng, Shengxiang Wang, L.Y. Wang, Haibiao Zheng, Huaile Lu, Feiran Shen, Jiazheng Hao, Xiaojuan Zhou, Jianrong Zhou, Zhijia Sun, Lunhua He, Tianjiao Liang
Abstract
The neutron Bragg-edge imaging is expected to be a new non-destructive energy-resolved neutron imaging technique for quantitatively two-dimensional or three-dimensional visualizing crystallographic information in a bulk material, which could be benefited from pulsed neutron source. Here we build a Bragg-edge imaging system on the General Purpose Powder Diffractometer at the China Spallation Neutron Source. The residual strain mapping of a bent Q235 ferrite steel sample has been achieved with a spectral resolution of 0.15% by the time-of-flight neutron Bragg-edge imaging on this system. The results show its great potential applications in materials science and engineering.