中国物理B ›› 2024, Vol. 33 ›› Issue (1): 14102-14102.doi: 10.1088/1674-1056/acf206

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Intensity correlation properties of x-ray beams split with Laue diffraction

Chang-Zhe Zhao(赵昌哲)1,2,3, Shang-Yu Si(司尚禹)1,2,3, Hai-Peng Zhang(张海鹏)3, Lian Xue(薛莲)3, Zhong-Liang Li(李中亮)1,2,3,†, and Ti-Qiao Xiao(肖体乔)1,2,3,‡   

  1. 1 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China
  • 收稿日期:2023-06-27 修回日期:2023-08-01 接受日期:2023-08-21 出版日期:2023-12-13 发布日期:2023-12-25
  • 通讯作者: Zhong-Liang Li, Ti-Qiao Xiao E-mail:lizhongliang@sari.ac.cn;tqxiao@sari.ac.cn
  • 基金资助:
    Project supported by the National Key Research and Development Program of China (Grant Nos. 2022YFF0709103, 2022YFA1603601, 2021YFF0601203, and 2021YFA1600703), the National Natural Science Foundation of China (Grant No. 81430087), and the Shanghai Pilot Program for Basic Research – Chinese Academy of Sciences, Shanghai Branch (Grant No. JCYJ-SHFY-2021-010).

Intensity correlation properties of x-ray beams split with Laue diffraction

Chang-Zhe Zhao(赵昌哲)1,2,3, Shang-Yu Si(司尚禹)1,2,3, Hai-Peng Zhang(张海鹏)3, Lian Xue(薛莲)3, Zhong-Liang Li(李中亮)1,2,3,†, and Ti-Qiao Xiao(肖体乔)1,2,3,‡   

  1. 1 Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;
    2 University of Chinese Academy of Sciences, Beijing 100049, China;
    3 Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201204, China
  • Received:2023-06-27 Revised:2023-08-01 Accepted:2023-08-21 Online:2023-12-13 Published:2023-12-25
  • Contact: Zhong-Liang Li, Ti-Qiao Xiao E-mail:lizhongliang@sari.ac.cn;tqxiao@sari.ac.cn
  • Supported by:
    Project supported by the National Key Research and Development Program of China (Grant Nos. 2022YFF0709103, 2022YFA1603601, 2021YFF0601203, and 2021YFA1600703), the National Natural Science Foundation of China (Grant No. 81430087), and the Shanghai Pilot Program for Basic Research – Chinese Academy of Sciences, Shanghai Branch (Grant No. JCYJ-SHFY-2021-010).

摘要: Beam splitting is one of the main approaches to achieving x-ray ghost imaging, and the intensity correlation between diffraction beam and transmission beam will directly affect the imaging quality. In this paper, we investigate the intensity correlation between the split x-ray beams by Laue diffraction of stress-free crystal. The analysis based on the dynamical theory of x-ray diffraction indicates that the spatial resolution of diffraction image and transmission image are reduced due to the position shift of the exit beam. In the experimental setup, a stress-free crystal with a thickness of hundred-micrometers-level is used for beam splitting. The crystal is in a non-dispersive configuration equipped with a double-crystal monochromator to ensure that the dimension of the diffraction beam and transmission beam are consistent. A correlation coefficient of 0.92 is achieved experimentally and the high signal-to-noise ratio of the x-ray ghost imaging is anticipated. Results of this paper demonstrate that the developed beam splitter of Laue crystal has the potential in the efficient data acquisition of x-ray ghost imaging.

关键词: x-ray ghost imaging, beam splitting with Laue diffraction, intensity correlation, dynamical theory of x-ray diffraction

Abstract: Beam splitting is one of the main approaches to achieving x-ray ghost imaging, and the intensity correlation between diffraction beam and transmission beam will directly affect the imaging quality. In this paper, we investigate the intensity correlation between the split x-ray beams by Laue diffraction of stress-free crystal. The analysis based on the dynamical theory of x-ray diffraction indicates that the spatial resolution of diffraction image and transmission image are reduced due to the position shift of the exit beam. In the experimental setup, a stress-free crystal with a thickness of hundred-micrometers-level is used for beam splitting. The crystal is in a non-dispersive configuration equipped with a double-crystal monochromator to ensure that the dimension of the diffraction beam and transmission beam are consistent. A correlation coefficient of 0.92 is achieved experimentally and the high signal-to-noise ratio of the x-ray ghost imaging is anticipated. Results of this paper demonstrate that the developed beam splitter of Laue crystal has the potential in the efficient data acquisition of x-ray ghost imaging.

Key words: x-ray ghost imaging, beam splitting with Laue diffraction, intensity correlation, dynamical theory of x-ray diffraction

中图分类号:  (X-ray beams and x-ray optics)

  • 41.50.+h
87.59.-e (X-ray imaging)