Updated on 2021/04/23

写真a

 
KUWAHARA Akira
 
Organization
Graduate School of Engineering Applied Energy 2 Assistant Professor
Title
Assistant Professor
Contact information
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Degree 1

  1. 博士(工学) ( 2019.9   静岡大学 ) 

Research Areas 3

  1. Energy Engineering / Applied plasma science

  2. Energy Engineering / Nuclear engineering

  3. Nanotechnology/Materials / Energy chemistry

Research History 1

  1. Japan Atomic Energy Agency

    2013.4 - 2020.1

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    Country:Japan

Education 1

  1. Shizuoka University   Graduate School, Division of Engineering

    - 2019.9

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    Country: Japan

Professional Memberships 3

  1. 日本原子力学会

  2. 日本鉄鋼協会

  3. THE JAPAN SOCIETY OF APPLIED PHYSICS

Committee Memberships 1

  1. 日本原子力学会北関東支部   幹事  

    2019.4 - 2020.1   

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    Committee type:学協会

Awards 6

  1. Outstanding Poster Awards

    2018.1  

    Akira Kuwahara

  2. 一般の部 優秀発表賞

    2017.4  

    桑原 彬

  3. 一般の部 優秀発表賞

    2016.4  

  4. 日本機械学会三浦賞

    2013.3  

  5. 学生セッション最優秀賞

    2012.11  

  6. 最優秀ポスター賞

    2011.10  

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Papers 5

  1. Plasma atomization of strontium chloride powder by a supersonic plasma jet and measurement of its efficiency using diode laser absorption spectroscopy Reviewed

    ACS Omega     2021

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  2. Temperature difference between gas species in absorption measurements using diode laser absorption spectroscopy and its effect on temperature reduction Reviewed

    Akira Kuwahara, Yasuaki Aiba, Takuya Nankawa, Makoto Matsui

    Atomic Spectroscopy     2021

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  3. Development of an isotope analysis method based on diode laser absorption spectroscopy using an arc-jet plasma wind tunnel Reviewed

    Akira Kuwahara, Yasuaki Aiba, Takuya Nankawa, Makoto Matsui

    Journal of Analytical Atomic Spectrometry   Vol. 33 ( 5 ) page: 893 - 896   2018.5

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Royal Society of Chemistry  

    Radioactive isotopes in nuclear fuel and radioactive waste must be quantified for safety control and management of various nuclear facilities. In this study, an isotope analysis method based on diode laser absorption spectroscopy by using an arc-jet plasma wind tunnel is developed for rapid analysis without sample preparation and sophisticated maintenance. The translational temperature and flow velocity downstream of a supersonic nozzle are measured using an atomic argon transition of 826.45 nm from an excited state, and then, the temperature upstream of the nozzle is estimated using the two measured values. Next, the trace gas measurement capability is verified by injecting natural xenon into argon plasma, and optical measurements are carried out at an atomic xenon transition to 823.16 nm from a metastable state. The detection limit of xenon over the argon molar ratio is estimated to be 140 parts per million downstream.

    DOI: 10.1039/c8ja00040a

    Scopus

  4. High spectral resolution of diode laser absorption spectroscopy for isotope analysis using a supersonic plasma jet Reviewed

    Akira Kuwahara, Yasuaki Aiba, Shinya Yamasaki, Takuya Nankawa, Makoto Matsui

    Journal of Analytical Atomic Spectrometry   Vol. 33   page: 1150-1153   2018

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    Language:English   Publishing type:Research paper (scientific journal)   Publisher:Royal Society of Chemistry ({RSC})  

    DOI: 10.1039/C8JA00120K

  5. Development of vacuum ultraviolet absorption spectroscopy system for wide measurement range of number density using a dual-tube inductively coupled plasma light source Reviewed

    Akira Kuwahara, Makoto Matsui, Yoshiki Yamagiwa

      Vol. 83   page: 123105   2012.12

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    Language:English   Publishing type:Research paper (scientific journal)  

    DOI: 10.1063/1.4770118

MISC 1

  1. 真空紫外吸収分光法におけるプローブ光プロファイルの評価と数密度測定への影響 Reviewed

    桑原彬,松井信,山極芳樹

    プラズマ応用科学   Vol. 20 ( 2 ) page: 130-134   2012.12

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    Language:Japanese  

Presentations 7

  1. 超音速プラズマ風洞を利用した革新的な元素・同位体分析技術 Invited

    桑原彬

    未来2020 

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    Event date: 2019.12.12

    Language:Japanese   Presentation type:Oral presentation (invited, special)  

    Country:Japan  

  2. New Approach for Isotope Analysis Using Supersonic Plasma Jet Combined with Laser Absorption Spectroscopy Invited International conference

    Akira Kuwahara, Takuya Nankawa, Makoto Matsui

    7th Annual Conference of AnalytiX-2019 

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    Event date: 2019.4.11 - 2019.4.14

    Language:English   Presentation type:Oral presentation (invited, special)  

    Country:Singapore  

  3. アークジェットによる運動方向を制御したアルゴンプラズマを対象としたレーザー誘起蛍光分光システ ムの開発

    早川禎一郎、桑原彬、澤田佳代、榎田洋一

    日本原子力学会中部支部第52回研究発表会  2020.12.18 

  4. 同位体分析を目的とした超音速プラズマ中のストロンチウム蛍光スペクトル測定

    桑原彬、早川禎一郎、澤田佳代、榎田洋一

    日本原子力学会2021年春の年会  2021.3.18 

  5. Extraction of palladium with di-n-hexyl sulfide by micro bubble generator

    Chenyu Zhou、Kayo Sawada、Akira Kuwahara、Youichi Enokida

    2020.12.18 

  6. ガラスへのモリブデンの溶解にガラス母材比表面積が与える影響

    嶋倉匠海、澤田佳代、桑原彬、榎田洋一

    日本原子力学会中部支部第52回研究発表会  2020.12.18 

  7. セシウム吸着ゼオライトのガラス固化処理における結晶形成に及ぼすB2O3添加の影響

    氣田雅大、澤田佳代、桑原彬、榎田洋一

    日本原子力学会中部支部第52回研究発表会  2020.12.18 

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Research Project for Joint Research, Competitive Funding, etc. 3

  1. 原子運動制御に基づくレーザー誘起蛍光法を利用した鉄鋼中の元素・同位体分析法の開発

    2021.04 - 2023.03

    鉄鋼研究振興助成 

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    Authorship:Principal investigator 

  2. 高温プラズマ中でのレーザー分光を利用した全試料対応型の万能分析法の開発

    2017.04 - 2019.03

    環境総合研究推進費 

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    Grant type:Competitive

  3. プラズマ風洞を用いた同位体比分析法の開発

    2015.10 - 2016.09

    公益財団法人谷川熱技術振興基金  平成27年度研究助成金 

KAKENHI (Grants-in-Aid for Scientific Research) 3

  1. 非平衡プラズマと触媒による協奏的原子化プロセスと精密ウラン同位体分析の実現

    Grant number:21H01858  2021.04 - 2025.03

    科研費(基盤研究(B))  

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    Authorship:Principal investigator  Grant type:Competitive

  2. 光共振器内の吸収飽和現象を利用した革新的な同位体分析法の開発

    2018.04 - 2021.03

    科研費(若手研究) 

    桑原 彬

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    Authorship:Principal investigator  Grant type:Competitive

  3. 超音速プラズマ風洞を用いた同位体比分析法の開発と極低温プラズマによる高分解能化

    2016.04 - 2018.03

    科研費(挑戦的萌芽研究) 

    桑原 彬

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    Authorship:Principal investigator  Grant type:Competitive

Industrial property rights 1

  1. 同位体分析装置及び同位体分析方法

    桑原彬,南川卓也,藤平俊夫,松井信

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    Application no:特願2017-064440  Date applied:2017.3.29

    Announcement no:公開2018-169179 

    Country of applicant:1