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Realization of hydrogen-like nitrogen recombination soft x-ray laser pumped by fast cappilary discharge

Research Project

Project/Area Number 26630108
Research Category

Grant-in-Aid for Challenging Exploratory Research

Allocation TypeMulti-year Fund
Research Field Power engineering/Power conversion/Electric machinery
Research InstitutionTokyo Institute of Technology

Principal Investigator

Hotta Eiki  東京工業大学, 総合理工学研究科(研究院), 教授 (70114890)

Co-Investigator(Kenkyū-buntansha) WATANABE Masato  東京工業大学, 大学院総合理工学研究科, 助教 (20251663)
Co-Investigator(Renkei-kenkyūsha) HORIOKA Kazuhiko  東京工業大学, 大学院総合理工学研究科, 教授 (10126328)
KAWAMURA Tohru  東京工業大学, 大学院総合理工学研究科, 講師 (10370214)
Research Collaborator SAKAI Yuusuke  
Vrba Pavel  
Project Period (FY) 2014-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2015: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
Fiscal Year 2014: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsレーザ / キャピラリー放電 / パルスパワー / 電力変換 / 軟X線レーザ / 再結合
Outline of Final Research Achievements

In the study on capillary discharge soft x-ray laser, neon-like argon electron collision excitation soft x-ray laser at 46.9 nm has been already realized. In order to shorten the laser wavelength, hydrogen-like nitrogen recombination soft x-ray laser at 13.4 nm was proposed, however, it does not realized yet. In this research, applying uniform axial magnetic field, increased radiation around 13.4 nm was observed by generation of concave electron density distribution on axis, however, lasing could not be realized. The reason why no lasing was observed was estimated as follows: plasma-wall interaction was increased by high current capillary discharge and the ablated material of capillary inner wall prevented the plasma temperature at the maximum pinch from attaining the required value and the resulted hydrogen-like nitrogen ion density was quite less than that required for lasing.

Report

(3 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • Research Products

    (8 results)

All 2015 2014 Other

All Int'l Joint Research (1 results) Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Open Access: 2 results,  Acknowledgement Compliant: 1 results) Presentation (4 results) (of which Int'l Joint Research: 1 results,  Invited: 2 results) Funded Workshop (1 results)

  • [Int'l Joint Research] Czech Technical University in Prague/Institute of Plasma Physics, CAS(チェコ)

    • Related Report
      2015 Annual Research Report
  • [Journal Article] Extreme Ultraviolet Light Sources and Soft X-Ray Laser Based on Discharge Produced Plasma (INVITED)2015

    • Author(s)
      Eiki Hotta, Yusuke Sakai, Yasushi Hayashi, Gohta Niimi, Bin Huang, Qiushi Zhu, Inho Song, Masato Watanabe
    • Journal Title

      Proceedings of SPIE

      Volume: 9524

    • Related Report
      2015 Annual Research Report
    • Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Zero-Emission Technologies Based on Discharge Produced Plasma (INVITED)2015

    • Author(s)
      Eiki Hotta
    • Journal Title

      The 6th International Symposium of Advanced Energy Science - Towards the Realization of Zero-Emission Energy -

      Volume: 1 Pages: 65-73

    • Related Report
      2015 Annual Research Report
    • Open Access
  • [Presentation] こんなに広いプラズマ応用-環境に優しいエネルギー利用から安心・安全社会の実現まで-(特別講演)2015

    • Author(s)
      堀田栄喜
    • Organizer
      第25回電気学会東京支部新潟支所研究発表会予稿集
    • Place of Presentation
      長岡技術科学大学
    • Year and Date
      2015-10-31
    • Related Report
      2015 Annual Research Report
    • Invited
  • [Presentation] Extreme Ultraviolet Light Sources and Soft X-Ray Laser Based on Discharge Produced Plasma2015

    • Author(s)
      Eiki Hotta, Yusuke Sakai, Yasushi Hayashi, Gohta Niimi, Bin Huang, Qiushi Zhu, Inho Song, Masato Watanabe
    • Organizer
      International Conference on Optical and Photonic Engineering (icOPEN2015)
    • Place of Presentation
      Singapore
    • Year and Date
      2015-04-14
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Effects of external axial magnetic field on soft X-ray radiation from capillary discharge hydrogen-like nitrogen plasma2014

    • Author(s)
      Tadahiro Usuba, Masato Watanabe and Eiki Hotta
    • Organizer
      Plasma Conference 2014
    • Place of Presentation
      新潟
    • Year and Date
      2014-11-18 – 2014-11-21
    • Related Report
      2014 Research-status Report
  • [Presentation] Effects of Externally Applied Axial Magnetic Field on Emission Spectra of Capillary Discharge Hydrogen-like Nitrogen Plasma2014

    • Author(s)
      Tadahiro Usuba, Masato Wtanabe and Eiki Hotta
    • Organizer
      5th Euro-Asian Pulsed Power Conference
    • Place of Presentation
      熊本
    • Year and Date
      2014-09-08 – 2014-09-12
    • Related Report
      2014 Research-status Report
  • [Funded Workshop] Workshop on Capillary Discharge SXR Lasers2015

    • Place of Presentation
      Tokyo Institute of Technology
    • Year and Date
      2015-12-03
    • Related Report
      2015 Annual Research Report

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Published: 2014-04-04   Modified: 2022-02-01  

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