AKIMASA OHNISHI 大西彰正

… Alternative Names

大西彰正オオニシアキマサ

OHNISHI Akimasa 大西彰正

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Researcher Number	90261677
Other IDs
Affiliation (Current)	2025: 山形大学, 理学部, 教授
Affiliation (based on the past Project Information) *help	2014 – 2023: 山形大学, 理学部, 教授 2012: 山形大学, 理学部, 教授 2010 – 2011: 山形大学, 理学部, 准教授 2003 – 2004: 山形大学, 理学部, 助教授 1996 – 1997: 山形大学, 理学部, 助手
Review Section/Research Field	Principal Investigator Basic Section 26020:Inorganic materials and properties-related / Inorganic materials/Physical properties / General applied physics / Quantum beam science / Applied materials science/Crystal engineering Except Principal Investigator 固体物性Ⅰ(光物性・半導体・誘電体)
Keywords	Principal Investigator 高速・高輝度シンチレータ / 高速シンチレータ / シンチレーション光強度の改善 / シンチレータ / シンチレーション光 / 高速・高強度シンチレーション光 / 高速・高強度シンチレータ / 放射線センサー / 放射線検出素子 / ゼオライト … More / 中性子 / 輝尽性蛍光体 / レーザー作用 / 発光タンパク質溶液 … More Except Principal Investigator nanoscale / anthracene / tin tetraiodide / reflection spectrum / optical property / cyclodextrin / cluster / supramolecule / SnI_4(沃化スズ) / ナノスケール / アントラセン / SnI_4(ヨウ化スズ) / 反射スペクトル / 光物性 / シクロデキストリン / クラスター / 超分子 Less

最外内殻電子励起と原子間輻射遷移の同時許容化による高速・高輝度シンチレータの開発Principal Investigator
- Principal Investigator
  
  大西彰正
- Project Period (FY)
  2022 – 2025
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 26020:Inorganic materials and properties-related
- Research Institution
  Yamagata University
Study on Ultra High Efficiency and Ultrafast Scintillation Radiation using Flat Outermost-core Level and Population Inversion StatePrincipal Investigator
- Principal Investigator
  
  Ohnishi Akimasa
- Project Period (FY)
  2017 – 2021
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Inorganic materials/Physical properties
- Research Institution
  Yamagata University
Development of Ultra High Efficiency and Ultrafast Radiation Detector based on Reconstruction of Interatomic Electron Transition ProcessPrincipal Investigator
- Principal Investigator
  
  AKIMASA OHNISHI
- Project Period (FY)
  2014 – 2016
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  General applied physics
- Research Institution
  Yamagata University
Development of photo-stimulable phosphor with boron-stored zeolite for imaging plate in strong neutron fieldPrincipal Investigator
- Principal Investigator
  
  OHNISHI Akimasa
- Project Period (FY)
  2010 – 2012
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Research Field
  
  Quantum beam science
- Research Institution
  Yamagata University
発光タンパク質溶液におけるレーザー作用発現に関する基礎研究Principal Investigator
- Principal Investigator
  
  大西彰正
- Project Period (FY)
  2003 – 2004
- Research Category
  
  Grant-in-Aid for Exploratory Research
- Research Field
  
  Applied materials science/Crystal engineering
- Research Institution
  Yamagata University
Characteristic Control and Optical Properties of Subnano-Scale of Supramolecules Using Cylindrical Molecules of Cyclodextrins.
- Principal Investigator
  
  YOSHINARI Takehisa
- Project Period (FY)
  1996 – 1997
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  固体物性Ⅰ(光物性・半導体・誘電体)
- Research Institution
  Yamagata University

All 2020 2019 2018 2016 2015 2014 2013 2012 2011 2010 Other

All Journal Article Presentation

[Journal Article] Visualizing cation vacancies in Ce:Gd3Al2Ga3O12 scintillators by gamma-ray-induced positron annihilation lifetime spectroscopy2020
- Author(s)
  Fujimori Kosuke、Kitaura Mamoru、Taira Yoshitaka、Fujimoto Masaki、Zen Heishun、Watanabe Shinta、Kamada Kei、Okano Yasuaki、Katoh Masahiro、Hosaka Masahito、Yamazaki Jun-ichiro、Hirade Tetsuya、Kobayashi Yoshinori、Ohnishi Akimasa
- Journal Title
  
  Applied Physics Express
  
  Volume: 13 Issue: 8 Pages: 085505-085505
- DOI
  10.35848/1882-0786/aba0dd
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K06785, KAKENHI-PROJECT-19K04997
[Journal Article] Auger-Free Luminescence in K2ZnCl4 Crystals2018
- Author(s)
  A. Ohnishi and M. Kitaura
- Journal Title
  
  UVSOR ACTIVITY REPORT 2017
  
  Volume: 45 Pages: 99-99
- Data Source
  KAKENHI-PROJECT-17K06785
[Journal Article] 分子性イオン結晶における新型オージェ・フリー発光の発見2016
- Author(s)
  北浦守、大西彰正
- Journal Title
  
  光学
  
  Volume: 45 Pages: 175-200
- Peer Reviewed / Acknowledgement Compliant
- Data Source
  KAKENHI-PROJECT-26390101
[Journal Article] Electronic Structures and Reflectance Spectra of AZnF3 (A=Na, K, Rb) Single Crystals2015
- Author(s)
  S. Ishii, S. Tanaka, A. Yamaji, S. Tanaka, S. Kurosawa, S. Watanabe, M. Kitaura, A. Ohnishi and M. Sasaki
- Journal Title
  
  UVSOR ACTIVITY REPORT 2014
  
  Volume: 42 Pages: 100-100
- Data Source
  KAKENHI-PROJECT-26390101
[Journal Article] 電子状態解析に基づく新規オージェーフリー発光物質の探索2014
- Author(s)
  石井，北浦，山路，黒澤，田中，渡邊，小笠原，大西，佐々木
- Journal Title
  
  DV-Xa研究会会報
  
  Volume: 27 Pages: 151-151
- Data Source
  KAKENHI-PROJECT-26390101
[Journal Article] Comparative Study of Auger-Free Luminescence of Rb_2ZnCl_4 Crystals between Experiment and Calculation2013
- Author(s)
  M. Kitaura、A. Ohnishi、S. Watanabe、K. Ogasawara、M. Sasaki
- Journal Title
  
  phys. Status. Solid c
  
  Volume: (in press)
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22604001
[Journal Article] Electron Spin Resonance Study on Local Structure of Manganese Ion Doped Gamma-Aluminum Oxynitride Phosphors2012
- Author(s)
  M. Kitaura、A. Harima、R.-J. Xie、T. Takeda、 N. Hirosaki、A. Ohnishi、M. Ssasaki
- Journal Title
  
  J. Light & Vis. Env.
  
  Volume: Vol.36 Pages: 6-9
- NAID
  10030135967
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22604001
[Journal Article] Electron Spin Resonance Study on Local Structure of Manganese Ion Doped Gamma-Aluminum Oxynitride Phosphors2012
- Author(s)
  M. Kitaura, A. Harima, R.-J. Xie, T. Takeda, N. Hirosaki, A. Ohnishi, M. Ssasaki
- Journal Title
  
  J. Light & Vis. Env.
  
  Volume: 36 Pages: 6-9
- NAID
  10030135967
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22604001
[Journal Article] Auger-free luminescence due to interatomic p-d transition and self-trapped exciton luminescence in Rb2ZnCl4 crystals2012
- Author(s)
  A. Ohnishi, M. Saito, M. Kitaura, M. Itoh, M. Sasaki
- Journal Title
  
  Journal of Luminescence
  
  Volume: 132 Issue: 10 Pages: 2639-2642
- DOI
  10.1016/j.jlumin.2012.05.009
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22604001
[Journal Article] Electronic Structure and Auger-Free Luminescence in Cs_2ZnCl_4 Crystals2012
- Author(s)
  A. Ohnishi、M. Saito、M. Kitaura、M. Itoh、M. Sasaki
- Journal Title
  
  Journal of Physical Society of Japan
  
  Volume: Vol.81
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22604001
[Journal Article] Electronic Structure and Auger-Free Luminescence in Cs2ZnCl4 Crystals2012
- Author(s)
  A. Ohnishi, M. Saito, M. Kitaura, M. Itoh, M. Sasaki
- Journal Title
  
  Journal of Physical Society of Japan
  
  Volume: 81 Issue: 11 Pages: 114704-114704
- DOI
  10.1143/jpsj.81.114704
- NAID
  210000109784
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22604001
[Journal Article] Auger-free luminescence due to interatomic p-d transition and self-trapped exciton luminescence in Rb_2ZnCl_4 crystals2012
- Author(s)
  A. Ohnishi、M. Saito、M. Kitaura、M. Itoh、M. Sasaki
- Journal Title
  
  Journal of Luminescence
  
  Volume: Vol.132 Pages: 2639-2642
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22604001
[Journal Article] Structural and cathodoluminescent properties of ZnAl_2O_4 phosphor for UV emission2010
- Author(s)
  T. Iguchi、H. Kominami、Y. Nakanishi、K. Hara、A. Ohnishi、M. Kitaura
- Journal Title
  
  Proceedings of the 17th International Display Workshops
  
  Volume: Vol.2 Pages: 1023-1026
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22604001
[Journal Article] Excitation processes of trivalent cerium ions in calcium thiogallate crystals by hot photocarriers2010
- Author(s)
  M.Kitaura, A.Ohnishi, M.Sasaki, C.Hidaka, T.Takizawa
- Journal Title
  
  Materials Science and Engineering
  
  Volume: 15
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22604001
[Journal Article] Structural and cathodoluminescent properties of ZnAl_2O_4 phosphor for UV emission2010
- Author(s)
  T.Iguchi, H.Kominami, Y.Nakanishi, K.Hara, A.Ohnishi, M.Kitaura
- Journal Title
  
  Proceedings of the 17th International Display Workshops
  
  Volume: 2 Pages: 1023-1026
- Data Source
  KAKENHI-PROJECT-22604001
[Journal Article] Excitation processes of trivalent cerium ions in calcium thiogallate crystals by hot photocarriers2010
- Author(s)
  M. Kitaura、A. Ohnishi、M. Sasaki、C. Hidaka、T. Takizawa
- Journal Title
  
  Materials Science and Engineering
  
  Volume: Vol.15 Pages: 1-8
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-22604001
[Presentation] 分子性イオン結晶におけるオージェ・フリー発光の温度特性2019
- Author(s)
  相澤拓海、八木橋亨、北浦守、大西彰正
- Organizer
  UVSORシンポジウム
- Data Source
  KAKENHI-PROJECT-17K06785
[Presentation] 真空紫外光励起による銀ゼオライトの発光特性2012
- Author(s)
  若松丈裕、大西彰正、北浦守、佐々木実、栗山恭直
- Organizer
  日本物理学会
- Place of Presentation
  関西学院大学
- Year and Date
  2012-03-24
- Data Source
  KAKENHI-PROJECT-22604001
[Presentation] Origin of Luminescence Bands in NaBi(WO4)2 Crystals2012
- Author(s)
  M. Kitaura, M. Fujita, A. Ohnishi, M. Sasaki
- Organizer
  8th International Conference on Luminescent Detectors and Transformers of Ionizing Radiation
- Place of Presentation
  Halle(Saale), Germany
- Data Source
  KAKENHI-PROJECT-22604001
[Presentation] Rb_2ZnCl_4および Cs_2ZnCl_4における新規オージェ・フリー発光2012
- Author(s)
  大西彰正
- Organizer
  日本物理学会四国支部
- Place of Presentation
  香川大学
- Year and Date
  2012-12-19
- Data Source
  KAKENHI-PROJECT-22604001
[Presentation] Origin of Luminescence Bands in NaBi(WO_4)_2 Crystals2012
- Author(s)
  M. Kitaura、M. Fujita、A. Ohnishi、M. Sasaki
- Organizer
  8th International Conference on Luminescent Detectors and Transformers of Ionizing Radiation
- Place of Presentation
  Germany
- Year and Date
  2012-09-10
- Data Source
  KAKENHI-PROJECT-22604001
[Presentation] Rb_2ZnCl_4結晶におけるオージェ・フリー発光スペクトルの第一原理計算2012
- Author(s)
  北浦守,渡邊真太,小笠原一禎,大西彰正,佐々木実
- Organizer
  第25回 DV-XA研究会
- Place of Presentation
  福岡
- Year and Date
  2012-08-06
- Data Source
  KAKENHI-PROJECT-22604001
[Presentation] Rb2ZnCl4結晶におけるオージェ・フリー発光スペクトルの第一原理計算2012
- Author(s)
  北浦守，渡邊真太，小笠原一禎，大西彰正，佐々木実
- Organizer
  第25回DV-XA研究会
- Place of Presentation
  福岡大学七隈キャンパス
- Data Source
  KAKENHI-PROJECT-22604001
[Presentation] Comparative Study of Auger-Free Luminescence of Rb2ZnCl4 Crystals between Experiment and Calculation2012
- Author(s)
  M. Kitaura, A. Ohnishi, S. Watanabe, K. Ogasawara, M. Sasaki
- Organizer
  18th International Conference on Ternary and Multinary Compounds 2012
- Place of Presentation
  University of Salzburg, Austria
- Data Source
  KAKENHI-PROJECT-22604001
[Presentation] Comparative Study of Auger-Free Luminescence of Rb_2ZnCl_4 Crystals between Experiment and Calculation2012
- Author(s)
  M. Kitaura、A. Ohnishi、S. Watanabe、K. Ogasawara、M. Sasaki
- Organizer
  18th International Conference on Ternary and Multinary Compounds 2012
- Place of Presentation
  Austria
- Year and Date
  2012-08-27
- Data Source
  KAKENHI-PROJECT-22604001
[Presentation] 真空紫外光励起による銀ゼオライト輝尽性蛍光体の発光特性2011
- Author(s)
  若松丈裕、大西彰正、北浦守、佐々木実
- Organizer
  UVSORワークショップ
- Place of Presentation
  岡崎カンファレンスセンター
- Year and Date
  2011-11-18
- Data Source
  KAKENHI-PROJECT-22604001
[Presentation] Structural and cathodoluminescent properties of ZnAl_2O_4 phosphor for UV emission2010
- Author(s)
  T. Iguchi、H. Kominami、Y. Nakanishi、K. Hara、A. Ohnishi、M. Kitaura
- Organizer
  The 17th International Display Workshops
- Place of Presentation
  Fukuoka
- Data Source
  KAKENHI-PROJECT-22604001
[Presentation] Excitation processes of trivalent cerium ions in calcium thiogallate crystals by hot photocarriers2010
- Author(s)
  M. Kitaura、A. Ohnishi、M. Sasaki、C. Hidaka、T. Takizawa
- Organizer
  The 11th Europhysical Conference on Defects in Insulating Materials
- Place of Presentation
  Hungary
- Data Source
  KAKENHI-PROJECT-22604001
[Presentation] 電子状態解析に基づく新規オージェーフリー発光物質の探索
- Author(s)
  石井，北浦，山路，黒澤，田中，渡邊，小笠原，大西，佐々木
- Organizer
  DV-Xa研究会
- Place of Presentation
  名古屋大学
- Year and Date
  2014-08-06 – 2014-08-08
- Data Source
  KAKENHI-PROJECT-26390101
[Presentation] Rb2ZnCl4およびCs2ZnCl4における新規オージェ・フリー発光
- Author(s)
  大西彰正
- Organizer
  日本物理学会四国支部
- Place of Presentation
  香川大学工学部
- Invited
- Data Source
  KAKENHI-PROJECT-22604001

1. 北浦守 (60300571)

# of Collaborated Projects: 2 results

# of Collaborated Products: 3 results
2. YOSHINARI Takehisa (60158483)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
3. KAMIKAWA Tomoyoshi (60006939)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
4. 佐々木実 (10116593)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
5. 久野敦 (50302287)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results

AKIMASA OHNISHI 大西 彰正

大西 彰正 オオニシ アキマサ

OHNISHI Akimasa 大西 彰正

Research Projects

Research Products

Co-Researchers

最外内殻電子励起と原子間輻射遷移の同時許容化による高速・高輝度シンチレータの開発Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Study on Ultra High Efficiency and Ultrafast Scintillation Radiation using Flat Outermost-core Level and Population Inversion StatePrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Development of Ultra High Efficiency and Ultrafast Radiation Detector based on Reconstruction of Interatomic Electron Transition ProcessPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Development of photo-stimulable phosphor with boron-stored zeolite for imaging plate in strong neutron fieldPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

発光タンパク質溶液におけるレーザー作用発現に関する基礎研究Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Characteristic Control and Optical Properties of Subnano-Scale of Supramolecules Using Cylindrical Molecules of Cyclodextrins.

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

[Journal Article] Visualizing cation vacancies in Ce:Gd3Al2Ga3O12 scintillators by gamma-ray-induced positron annihilation lifetime spectroscopy2020

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Auger-Free Luminescence in K2ZnCl4 Crystals2018

Author(s)

Journal Title

Data Source

[Journal Article] 分子性イオン結晶における新型オージェ・フリー発光の発見2016

Author(s)

Journal Title

Data Source

[Journal Article] Electronic Structures and Reflectance Spectra of AZnF3 (A=Na, K, Rb) Single Crystals2015

Author(s)

Journal Title

Data Source

[Journal Article] 電子状態解析に基づく新規オージェーフリー発光物質の探索2014

Author(s)

Journal Title

Data Source

[Journal Article] Comparative Study of Auger-Free Luminescence of Rb_2ZnCl_4 Crystals between Experiment and Calculation2013

Author(s)

Journal Title

Data Source

[Journal Article] Electron Spin Resonance Study on Local Structure of Manganese Ion Doped Gamma-Aluminum Oxynitride Phosphors2012

Author(s)

Journal Title

NAID

Data Source

[Journal Article] Electron Spin Resonance Study on Local Structure of Manganese Ion Doped Gamma-Aluminum Oxynitride Phosphors2012

Author(s)

Journal Title

NAID

Data Source

[Journal Article] Auger-free luminescence due to interatomic p-d transition and self-trapped exciton luminescence in Rb2ZnCl4 crystals2012

Author(s)

Journal Title

AKIMASA OHNISHI 大西彰正

大西彰正オオニシアキマサ

OHNISHI Akimasa 大西彰正

[Presentation] 分子性イオン結晶におけるオージェ・フリー発光の温度特性2019