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First neutron Bragg-edge imaging experimental results at CSNS

Chinese Physics B 2021年第9期30卷 45-48页

作者： Jie Chen Zhijian Tan Weiqiang Liu Sihao Deng Shengxiang Wang Liyi Wang Haibiao Zheng Huaile Lu Feiran Shen Jiazheng Hao Xiaojuan Zhou Jianrong Zhou Zhijia Sun Lunhua He Tianjiao Liang Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing 100049China Spallation Neutron Source Science Center(SNSSC) Dongguan 523803China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

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 *** we build a Bragg-edge imaging system on the General Purpose Powder Diffractometer at the China Spallation Neutron *** 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 *** results show its great potential applications in materials science and engineering.

关键词： neutron Bragg-edge imaging China Spallation Neutron Source

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Multicaloric and coupled-caloric effects

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Chinese Physics B 2020年第4期29卷 31-40页

作者： Jia-Zheng Hao Feng-Xia Hu Zi-Bing Yu Fei-Ran Shen Hou-Bo Zhou Yi-Hong Gao Kai-Ming Qiao Jia Li Cheng Zhang Wen-Hui Liang Jing Wang Jun He Ji-Rong Sun Bao-Gen Shen Division of Functional Material Research Central Iron and Steel Research InstituteBeijing 100081China Beijing National Laboratory for Condensed Matter Physics&State Key Laboratory of Magnetism Institute of PhysicsChinese Academy of SciencesBeijing 100190China School of Physical Sciences University of Chinese Academy of SciencesBeijing 100049China Songshan Lake Materials Laboratory Dongguan 523808China Fujian Innovation Academy Chinese Academy of SciencesFuzhou 350108China

The multicaloric effect refers to the thermal response of a solid material driven by simultaneous or sequential application of more than one type of external *** practical applications,the multicaloric effect is a potentially interesting strategy to improve the efficiency of refrigeration ***,the state of the art in multi-field driven multicaloric effect is *** phenomenology and fundamental thermodynamics of the multicaloric effect are well established.A number of theoretical and experimental research approaches are *** present,the theoretical understanding of the multicaloric effect is ***,due to the limitation of the current experimental technology,the experimental approach is still in *** these researches indicated that the thermal response and effective reversibility of multiferroic materials can be improved through multicaloric cycles to overcome the inherent limitations of the physical mechanisms behind single-field-induced caloric ***,the viewpoint of further developments is presented.

关键词： multicaloric effect coupled-caloric effect solid-state refrigeration magnetocaloric effect

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