• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Proposal for a transmission-grating-type focusing device achieving better performance than diffraction limit and its numerical simulation

Research Project

Project/Area Number 16K05019
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Quantum beam science
Research InstitutionUniversity of Hyogo

Principal Investigator

Kagoshima Yasushi  兵庫県立大学, 物質理学研究科, 教授 (10224370)

Research Collaborator Takayama Yuki  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
KeywordsX線顕微鏡 / 放射光 / X線光学 / X線ナノビーム
Outline of Final Research Achievements

An inverse-phase composite zone plate (ZP) is proposed to gain a deeper focus than the diffraction-limited depth of focus, with little reduction in spatial resolution. The structure is a combination of an inner ZP functioning as a conventional phase ZP and an outer ZP functioning with third-order diffraction with opposite phase to the inner ZP. Complex amplitude distributions neighboring the focal point were calculated using diffraction integration. The depth of focus and the spatial resolution were examined. Two characteristic promising cases regarding the depth of focus were found: a pit-intensity focus with the deepest depth of focus, and a flat-intensity focus with deeper depth of focus than usual ZP. It was found that twice the depth of focus could be expected with little reduction in the spatial resolution for 10 keV X-ray energy. It was also found that the depth of focus and the spatial resolution almost unchanged in the photon energy range from 8 to 12 keV.

Academic Significance and Societal Importance of the Research Achievements

放射光が広く利用されるようになり、ZPや全反射ミラーなどのX線光学素子の進歩も相俟って、サブ100 nmの分解能Rが比較的容易に得られるようになり、局所分析やX線顕微鏡の実用性とニーズが高まってきている。集光光学系の基本原理として、より小さいRを得ようとすると焦点深度Dはより浅くなる。すなわちRを小さくすることとDを大きくすることは同時には達成できない。Rを損なわずにDを大きくできないことは、厚い試料を高い分解能で観察することは原理的に困難であることを意味しており、実材料の分析において試料の厚さを制限することになる。本研究はX線分析の実用性の向上に資するものである。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (6 results)

All 2019 2018 2017

All Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (4 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Inverse-phase composite zone plate providing deeper focus than the normal diffraction-limited depth of X-ray microbeams2019

    • Author(s)
      Kagoshima Yasushi、Takayama Yuki
    • Journal Title

      Journal of Synchrotron Radiation

      Volume: 26 Issue: 1 Pages: 52-58

    • DOI

      10.1107/s1600577518016703

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Proposal for Inverse-Phase Composite Zone Plate for Deeper Depth of Focus2018

    • Author(s)
      Kagoshima Yasushi、Takayama Yuki
    • Journal Title

      Microscopy and Microanalysis

      Volume: 24 Issue: S2 Pages: 280-281

    • DOI

      10.1017/s1431927618013739

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] ディープフォーカスゾーンプレートの提案(2)2019

    • Author(s)
      篭島 靖、高山 裕貴
    • Organizer
      第32回日本放射光学会年会・放射光科学合同シンポジウム
    • Related Report
      2018 Annual Research Report
  • [Presentation] Proposal for Inverse-Phase Composite Zone Plate for Deeper Depth of Focus2018

    • Author(s)
      Y. Kagoshima and Y. Takayama
    • Organizer
      XRM2018, 14th International Conference on X-Ray Microscopy
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ディープフォーカスゾーンプレートの提案2018

    • Author(s)
      篭島 靖
    • Organizer
      第31回日本放射光学会年会・放射光科学合同シンポジウム
    • Related Report
      2017 Research-status Report
  • [Presentation] ディープフォーカスゾーンプレートの提案2017

    • Author(s)
      篭島 靖
    • Organizer
      第13回X線結像光学シンポジウム
    • Related Report
      2017 Research-status Report

URL: 

Published: 2016-04-21   Modified: 2020-03-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi