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Optimization of femtosecond laser induced gas-phase plasma reaction using machine learning

Research Project

Project/Area Number 21K03521
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 14030:Applied plasma science-related
Research InstitutionNagoya University

Principal Investigator

Matsuda Akitaka  名古屋大学, 理学研究科, 講師 (10413999)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2022: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2021: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords強レーザー場 / レーザーフィラメント / レーザー誘起プラズマ / 機械学習 / 反応制御 / 強レーザー場科学
Outline of Research at the Start

フェムト秒強レーザー場を用いた単分子解離反応の研究において成功が収められてきたレーザー波形整形による反応制御法を複数の分子が関与する気相プラズマ多体反応に適用する。研究代表者のこれまでの研究においてレーザーパラメーターに対する多体反応の変化が観測されている炭化水素系分子を対象として,特定の分子の生成量が最大となるレーザー波形の探索に取り組み,最適化されたレーザー波形を元にレーザー誘起プラズマにおける気相多体反応機構の検討を行う。

Outline of Final Research Achievements

Optimal control system for femtosecond laser induced plasma reaction was developed incorporating femtosecond laser pulse shaping technique. Among the various types of machine learning algorithms, genetic algorithm, which has been successful in selective breaking in intense laser fields, was adopted. The spectral phase of the femtosecond laser pulse was utilized as the genetic information. The developed system was applied to aerial femtosecond laser plasma and the optimal phase which gives the maximum optical emission intensity was explored. The intensity of the plasma emission increased stepwise along with the generation. After the 40th generation, the intensity exceeded that expected for the shortest pulse. This indicates that the laser plasma reaction was successfully optimized.

Academic Significance and Societal Importance of the Research Achievements

気相プラズマ反応は高い反応性を示すことから,物質科学の側面からエネルギーや環境など多岐にわたる問題を解決するための反応法として注目を集めている。本研究では,フェムト秒強レーザー場において成功が収められてきたレーザーパルス波形整形による反応制御法をレーザー誘起気相プラズマ反応に適用し,発光強度を指標とした実験において機械学習による反応の最適制御が可能であることを明らかにした。今後,様々な分子系への適用を進めることで高効率・高選択的な新奇プラズマ反応法の開拓につながると期待される。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (9 results)

All 2023 2022 2021

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (8 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Association Reaction of Gaseous C2H4 in Femtosecond Laser Filaments Studied by Time-of-Flight Mass Spectrometry2021

    • Author(s)
      Akitaka Matsuda, Kentaro Tani, Yukari Takeuchi, Yui Hayakawa, Akiyoshi Hishikawa
    • Journal Title

      ACS Omega

      Volume: 6 Issue: 44 Pages: 29862-29868

    • DOI

      10.1021/acsomega.1c04354

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Many-body reactions in CH4/O2 binary system induced by femtosecond laser filament2023

    • Author(s)
      Akitaka Matsuda, Aoi Sakagami, Nana Fujikawa, Akiyoshi Hishikawa
    • Organizer
      38th Symposium on Chemical Kinetics and Dynamics
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] フェムト秒レーザーフィラメントにおけるCH4/O2多体反応の質量分析2023

    • Author(s)
      松田晃孝, 坂上葵, 藤川奈々, 菱川明栄
    • Organizer
      第17回分子科学討論会
    • Related Report
      2023 Annual Research Report
  • [Presentation] フェムト秒レーザーフィラメントにおける気相ヘキサン会合反応の飛行時間質量分析2022

    • Author(s)
      松田晃孝, 奥村祐哉, 菱川明栄
    • Organizer
      第16回分子科学討論会
    • Related Report
      2022 Research-status Report
  • [Presentation] フェムト秒強レーザー場を反応場とした気相ヘキサン多体反応2022

    • Author(s)
      松田晃孝, 奥村祐哉, 菱川明栄
    • Organizer
      第53回中部化学関係学協会支部連合秋季大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Association reaction of gaseous C2H4 in femtosecond laser filaments studied by mass spectrometry2021

    • Author(s)
      A. Matsuda, K. Tani, Y. Takeuchi, Y. Hayakawa, A. Hishikawa
    • Organizer
      36th Symposium on Chemical Kinetics and Dynamics
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] Association reaction of gaseous C6H14 in femtosecond laser filament studied by product mass spectrometry2021

    • Author(s)
      Y. Okumura, A. Matsuda, A. Hishikawa
    • Organizer
      36th Symposium on Chemical Kinetics and Dynamics
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] フェムト秒レーザーフィラメントにおける気相C2H4会合反応の質量分析2021

    • Author(s)
      松田晃孝,谷健太郎,竹内ゆかり,早川優衣,菱川明栄
    • Organizer
      第15回分子科学討論会
    • Related Report
      2021 Research-status Report
  • [Presentation] 気相C6H14におけるレーザーフィラメント誘起会合反応生成物の質量分析2021

    • Author(s)
      奥村祐哉, 松田 晃孝, 菱川明栄
    • Organizer
      第15回分子科学討論会
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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