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Computed Tomography for Refractive Index using an X-ray Shearing Interferometer

Research Project

Project/Area Number 10450028
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Applied optics/Quantum optical engineering
Research InstitutionOsaka Prefecture University

Principal Investigator

IWARTA Koichi  Osaka Prefecture University, College of Engineering, Professor, 工学部, 教授 (20081242)

Co-Investigator(Kenkyū-buntansha) KIKUTA Hisao  Osaka Prefecture University, Colette of Engineering, Research Associate, 工学部, 助手 (10214743)
KUBO Hayao  Osaka Prefecture University, College of Engineering, Associate Professor, 工学部, 助教授 (30081243)
Project Period (FY) 1998 – 1999
Project Status Completed (Fiscal Year 1999)
Budget Amount *help
¥7,500,000 (Direct Cost: ¥7,500,000)
Fiscal Year 1999: ¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 1998: ¥4,500,000 (Direct Cost: ¥4,500,000)
KeywordsX-ray interferometer / Shearing interferometer / Image measurement / Refractive index computed tomography / Phase detection / Spatial resolution / X線 / 屈折率 / CT / 位相差
Research Abstract

The object of the present investigation is to show the effectiveness of the proposed shearing interferometer and to apply it to the reconstruction of refractive index distribution using computed tomography. We obtain following results :
1. We measured interferometric intensity distribution and phase distribution of the X-ray penetrated through objects made of plastics with the fabricated X-ray shearing interferometer. For the measurement, we used a point X-ray source and scintillation counter and scan the object mechanically. With this system, we can detect thickness difference as small as 1 μm, with sensitivity higher than the usual intensity detection.
2. We constructed a X-ray shearing interferometer system with a line X-ray source and a CCD camera. With this system we obtain interferometric X-ray image of plastic object without mechanical scanning. By introducing phase shifting method to this system, we measured phase difference distribution of X-ray penetrated through objects made o … More f plastics.
3. We analyzed the beam width in the interferometer with the spherical wave-front theory of X-ray dynamic diffraction and show that the attainable spherical resolution of the shearing interferometer is a few micron.
4. We constructed interferometers which were planned to make separated type, but the interferometer did not work well perhaps because the residual stress in the Si crystal. We find another method of making the interferometer and are under way to make it. Phase difference measurements in this project are made with the old interferometer. .
5. We made a program for calculating the refractive index distribution from the obtained phase distribution and investigate the possibility of CT reconstruction with the fabricated X-ray shearing interferometer by simulation.
6. We showed effectiveness of the shearing interferometer by reconstructing dynamic refractive index distribution on a section of a fluid flow with a grating shearing interferometer in the visible spectrum and CT algorithm.
7. We obtain axially symmetrical refractive index distribution from the data taken with the X-ray shearing interferometer Less

Report

(3 results)
  • 1999 Annual Research Report   Final Research Report Summary
  • 1998 Annual Research Report
  • Research Products

    (24 results)

All Other

All Publications (24 results)

  • [Publications] I.. Iwata: "Phase-Shifting X-Ray Shearing Interferometer"Japanese Journal of Applied Physics. 38・11. 6535-6539 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 菊田久雄: "微分干渉計を用いた光CT法による屈折率分布の時間的変化の測定"日本機械学会論文集 (C編). 65・637. 3629-3634 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] A. Kawasaki: "Phase and Refractive-index Imaging with a Phase-shifting X-ray Shearing Interferometer"Proceedings of IMEKO-XV World Congress. XI. 9-12 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] H. Kikuta: "Measurement of temporal variation of refractive-index distribution by optical computed tomography using differential interferometers"Proceedings of IMEKO-XV World Congress. VII. 71-74 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] 岩田耕一: "X線干渉計とその応用"精密工学会誌. 64・9. 1299-1303 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K. Iwata: "X-ray shearing interferometer for non-destructive testing"Experimental Mechanics, Advances in Design, Testing and Analysis. 741-745 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K. Iwata: "Phase Imaging with an X-ray Shearing Interferometer"interntional Archives of Phtogrammetry and Remote Sensing. 32・5. 70-73 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K.Iwata: "Phase-Shifting X-ray Shearing Interferometer"Japanese Journal of Applied Physics. 38-11. 6535-6539 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] H.Kikuta: "Measurement of Temporal Variation of Refractive Index Distribution with Optical Computed Tomography using Differential Interferometers"Trans. of the Japan Society of Mechanical Engineers C. 65, 637. 3629-3634 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] A.Kawasaki: "Phase and Refractive-index Imaging with a Phase-shifting X-ray Shearing Interferometer"Proceedings of IMEKO-XV World Congress. XI. 9-12 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] H.Kikuta: "Measurement of temporal variation of refractive-index distribution by optical computed tomography using differential interferometers"Proceedings of IMEKO-XV World Congress. VII. 71-74 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K.Iwata: "X-ray interferometer and its applications"Journal of the Japan Society of Precision Engineering. 64-9. 1299-1303 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K.Iwata: "X-ray shearing interferometer for non-destructive testing"Experimental Mechanics, Advances in Design, Testing and Analysis. 741-745 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K.Iwata: "Phase Imaging with an X-ray Shearing Interferometer"International Archives of Phtogrammetry and Remote Sensing. 32-5. 70-73 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1999 Final Research Report Summary
  • [Publications] K. Iwata: "Phase-Shifting X-Ray Shearing Interferometer"Japanese Journal of Applied Physics. 38・11. 6535-6539 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 菊田久雄: "微分干渉計を用いた光CT法による屈折率分布の時間的変化の測定"日本機械学会論文集(C編). 65・637. 3629-3634 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] A. Kawasaki: "Phase and Refractive-index Imaging with a Phase-shifting X-ray Shearing Interferometer"Proceedings of IMEKO- XV World Congress. XI. 9-12 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] H. Kikuta: "Measurement of temporal variation of refractive-index distribution by optical computed tomography using differential interferometers"Proceedings of IMEKO -XV World Congress. VII. 71-74 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 岩田耕一: "X線干渉計とその応用"精密工学会誌. 64・9. 1299-1303 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] K. Iwata: "X-ray shearing interferometer for non-destructive testing"Experimental Mechanics, Advances in Design, Testing and Analysis. 741-745 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] K. Iwata: "Phase Imaging with an X-ray Shearing Interferometer"Interntional Archives of Phtogrammetry and Remote Sensing. 32・5. 70-73 (1998)

    • Related Report
      1999 Annual Research Report
  • [Publications] K.Iwata 他: "Phase Imaging with an X-ray Shearing Interferometer" International Archives of Photogrammetry and Remote Sensing. 32・5. 70-73 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Iwata 他: "X-ray Shearing Interferometer for non-destructive Testing" Experimental Mechanics ed by IMAllism (A.A.Balkema, U.K). 741-745 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 岩田耕一: "X線干渉計とその応用" 精密工学会誌. 64・9. 1299-1303 (1998)

    • Related Report
      1998 Annual Research Report

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Published: 1998-04-01   Modified: 2016-04-21  

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