中国物理B ›› 2010, Vol. 19 ›› Issue (4): 40701-040701.doi: 10.1088/1674-1056/19/4/040701

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Comparative analysis of phase extraction methods based on phase-stepping and shifting curve in grating interferometry

刘宜晋1, 刘小松2, 李恩荣2, 朱佩平2, 张凯2, 王志立2, 洪友丽2, 袁清习2, 黄万霞2, 吴自玉3, 张慧滔4   

  1. (1)Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China;Department of Physics, University of Science and Technology of China, Hefei 230026, China; (2)Institute of High Energy Physics, Chinese Academy of Sciences,Beijing 100049, China; (3)Institute of High Energy Physics, Chinese Academy of Sciences,Beijing 100049, China;National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China; (4)Institute of High Energy Physics
  • 收稿日期:2009-04-01 修回日期:2009-09-18 出版日期:2010-04-15 发布日期:2010-04-15
  • 基金资助:
    Project supported by the Key Program of the National Natural Science Foundation of China (Grant Nos.~10490194 and 10734070), the National Natural Science Foundation of China (Grant Nos.~10504033, 10774144 and 10979055), the Knowledge Innovation Program of

Comparative analysis of phase extraction methods based on phase-stepping and shifting curve in grating interferometry

Liu Xiao-Song(刘小松)a), Li En-Rong(李恩荣)a), Zhu Pei-Ping(朱佩平)a)†, Liu Yi-Jin(刘宜晋)a)b), Zhang Kai(张凯) a), Wang Zhi-Li(王志立)a), Hong You-Li(洪友丽)a), Zhang Hui-Tao(张慧滔) a)d), Yuan Qing-Xi(袁清习)a), Huang Wan-Xia(黄万霞)a), and Wu Zi-Yu(吴自玉)a)c)‡   

  1. a Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, Chinab Department of Physics, University of Science and Technology of China, Hefei 230026, China; c National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China; d School of Mathematical Sciences, Capital Normal University, Beijing 100048, China
  • Received:2009-04-01 Revised:2009-09-18 Online:2010-04-15 Published:2010-04-15
  • Supported by:
    Project supported by the Key Program of the National Natural Science Foundation of China (Grant Nos.~10490194 and 10734070), the National Natural Science Foundation of China (Grant Nos.~10504033, 10774144 and 10979055), the Knowledge Innovation Program of

摘要: Two phase extraction methods which are based separately on phase-stepping and shifting curve are mainly used in phase-sensitive imaging in gating interferometry to determine the x-ray phase shift induced by an object in the beam. In this paper, the authors perform a full comparative analysis and present the main virtues and limitations of these two methods according to the theoretical analysis of the grating interferometry.

Abstract: Two phase extraction methods which are based separately on phase-stepping and shifting curve are mainly used in phase-sensitive imaging in gating interferometry to determine the x-ray phase shift induced by an object in the beam. In this paper, the authors perform a full comparative analysis and present the main virtues and limitations of these two methods according to the theoretical analysis of the grating interferometry.

Key words: x-ray phase sensitive imaging, grating interferometer, phase-stepping, shifting curve

中图分类号:  (X-ray imaging)

  • 87.59.-e
07.85.-m (X- and γ-ray instruments) 07.60.Ly (Interferometers)