Yamakawa Koichiro 山川紘一郎

Researcher Number	60633279
Other IDs
Affiliation (Current)	2025: 国立研究開発法人日本原子力研究開発機構, 原子力科学研究所先端基礎研究センター, 研究副主幹
Affiliation (based on the past Project Information) *help	2024: 国立研究開発法人日本原子力研究開発機構, 原子力科学研究所先端基礎研究センター, 研究副主幹 2022 – 2023: 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門原子力科学研究所先端基礎研究センター, 研究副主幹 2019 – 2021: 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門原子力科学研究所先端基礎研究センター, 研究職 2018: 学習院大学, 理学部, 助教
Review Section/Research Field	Principal Investigator Basic Section 32010:Fundamental physical chemistry-related / Basic Section 29020:Thin film/surface and interfacial physical properties-related
Keywords	Principal Investigator 核スピン転換 / テラヘルツ分光 / 水素分子 / 分子分光 / 水素 / ラマン分光 / 赤外分光 / 第一原理計算 / 赤外吸収分光 / テラヘルツ吸収分光 / 水クラスター

非磁性絶縁体と相互作用する水素分子のオルソ・パラ転換Principal Investigator
- Principal Investigator
  
  山川紘一郎
- Project Period (FY)
  2023 – 2025
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Review Section
  
  Basic Section 29020:Thin film/surface and interfacial physical properties-related
- Research Institution
  Japan Atomic Energy Agency
Elucidation of the unified mechanism of molecular nuclear-spin-conversion with use of rotationally resolved spectroscopyPrincipal Investigator
- Principal Investigator
  
  Yamakawa Koichiro
- Project Period (FY)
  2020 – 2022
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 32010:Fundamental physical chemistry-related
- Research Institution
  Japan Atomic Energy Agency
Elucidation of nuclear-spin conversion mechanism of water molecules by terahertz and infrared spectroscopyPrincipal Investigator
- Principal Investigator
  
  Yamakawa Koichiro
- Project Period (FY)
  2018 – 2019
- Research Category
  
  Grant-in-Aid for Early-Career Scientists
- Review Section
  
  Basic Section 32010:Fundamental physical chemistry-related
- Research Institution
  Japan Atomic Energy Agency
  Gakushuin University

All 2024 2023 2022 2021 2020 2019 2018

All Journal Article Presentation

[Journal Article] An Isotope-labeling Study of CO2 Formation Pathways in Molecular Clouds: Ultraviolet Photolysis of CO-H2O Ice2023
- Author(s)
  Hirayama Akemi、Arakawa Ichiro、Yamakawa Koichiro
- Journal Title
  
  The Astrophysical Journal
  
  Volume: 951 Issue: 2 Pages: 132-132
- DOI
  10.3847/1538-4357/acd547
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-23K26549
[Journal Article] 低温凝縮層中の水素及びメタン分子の核スピン転換2023
- Author(s)
  山川紘一郎
- Journal Title
  
  分光研究
  
  Volume: 72 Pages: 187-198
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-23K26549
[Journal Article] Fast ortho-to-para conversion of molecular hydrogen in chemisorption and matrix-isolation systems2023
- Author(s)
  Ueta Hirokazu、Fukutani Katsuyuki、Yamakawa Koichiro
- Journal Title
  
  Frontiers in Chemistry
  
  Volume: 11 Pages: 1258035-1258035
- DOI
  10.3389/fchem.2023.1258035
- Peer Reviewed / Open Access
- Data Source
  KAKENHI-PROJECT-23K04593, KAKENHI-PROJECT-23K26549
[Journal Article] Nuclear-spin conversion analysis of ν2 + ν4 combination band of crystalline methane in phase II2021
- Author(s)
  Takeru Sugimoto, Koichiro Yamakawa
- Journal Title
  
  J. Chem. Phys.
  
  Volume: 154 Pages: 1-4
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K05424
[Journal Article] Terahertz and mid-infrared spectroscopy of matrix-isolated clusters and matrix-sublimation ice of D2O2020
- Author(s)
  K. Yamakawa, H. Nasu, N. Suzuki, G. Shimizu, and I. Arakawa
- Journal Title
  
  J. Chem. Phys.
  
  Volume: 152 Issue: 17 Pages: 174310-174310
- DOI
  10.1063/5.0005766
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K05062, KAKENHI-PROJECT-18K14182
[Journal Article] Terahertz and mid-infrared spectroscopy of matrix-isolated clusters and matrix-sublimation ice of D2O2020
- Author(s)
  Koichiro Yamakawa, Hirokazu Nasu, Natsumi Suzuki, Genki Shimizu, Ichiro Arakawa
- Journal Title
  
  Journal of Chemical Physics
  
  Volume: 152 Pages: 1-13
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K05424
[Journal Article] Nuclear Spin Conversion of H2, H2O, and CH4 Interacting with Diamagnetic Insulators2020
- Author(s)
  Koichiro Yamakawa and Katsuyuki Fukutani
- Journal Title
  
  Journal of the Physical Society of Japan
  
  Volume: 89 Issue: 5 Pages: 051016-051016
- DOI
  10.7566/jpsj.89.051016
- NAID
  210000158053
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K14182, KAKENHI-PLANNED-18H05518, KAKENHI-PROJECT-17H01057
[Journal Article] 凝縮系での分子の振動回転および核スピン転換に関する理論・分光研究2020
- Author(s)
  山川紘一郎
- Journal Title
  
  しょうとつ
  
  Volume: 17 Pages: 86-101
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K05424
[Journal Article] その場テラヘルツ・赤外吸収分光装置の開発2020
- Author(s)
  山川紘一郎, 那須裕一, 清水元希
- Journal Title
  
  分光研究
  
  Volume: 69 Pages: 105-106
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K05424
[Journal Article] その場テラヘルツ・赤外吸収分光装置の開発2020
- Author(s)
  山川紘一郎, 那須裕一, 清水元希
- Journal Title
  
  分光研究 (accepted)
  
  Volume: 69
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18K14182
[Journal Article] Fast nuclear-spin conversion of H2 trapped and polarized in a CO2 matrix2020
- Author(s)
  Koichiro Yamakawa, Atsuki Ishibashi, Toshinobu Namiyoshi, Yuichi Azuma, Ichiro Arakawa
- Journal Title
  
  Physical Review B Rapid Communication
  
  Volume: 102 Pages: 1-5
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20K05424
[Journal Article] Spectroscopic determination of interconversion rates among three nuclear spin isomers of methane in crystalline II2019
- Author(s)
  Takeru Sugimoto, Hirokazu Nasu, Ichiro Arakawa, and Koichiro Yamakawa
- Journal Title
  
  Journal of Chemical Physics
  
  Volume: 150
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K14182
[Journal Article] Excitation of infrared-inactive vibrational modes in a polyatomic molecule through hot band transitions2019
- Author(s)
  Yamakawa Koichiro
- Journal Title
  
  The European Physical Journal D
  
  Volume: 73 Issue: 3
- DOI
  10.1140/epjd/e2019-80496-7
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18K14182
[Journal Article] 原子から分子クラスターまで：衝突の観点から2019
- Author(s)
  山川紘一郎
- Journal Title
  
  しょうとつ
  
  Volume: 16(2) Pages: 41-43
- Data Source
  KAKENHI-PROJECT-18K14182
[Journal Article] D2O clusters isolated in rare-gas solids: Dependence of infrared spectrum on concentration, deposition rate, heating temperature, and matrix material2018
- Author(s)
  Shimazaki Yoichi、Arakawa Ichiro、Yamakawa Koichiro
- Journal Title
  
  AIP Advances
  
  Volume: 8 Issue: 4
- DOI
  10.1063/1.5022707
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18K14182
[Journal Article] 極高真空領域における物理吸着研究装置の開発2018
- Author(s)
  河原幸太, 加藤勇樹, 久保田康介, 山川紘一郎, 荒川一郎
- Journal Title
  
  表面と真空
  
  Volume: 61 Pages: 533-538
- NAID
  130007432110
- Data Source
  KAKENHI-PROJECT-18K14182
[Journal Article] 対称性に基づく分子の電子・振動・回転・核スピン状態の研究2018
- Author(s)
  山川紘一郎
- Journal Title
  
  分光研究
  
  Volume: 67 Pages: 91-103
- NAID
  40021657838
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-18K14182
[Presentation] Nuclear spin conversion of methane in condensed layers at low temperatures2024
- Author(s)
  Koichiro Yamakawa, Takeru Sugimoto
- Organizer
  International Conference on Key Intermediates in Atmospheric Chemistry and Astrochemistry
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-23K26549
[Presentation] Oxygen-isotope effect on the nuclear spin conversion of water molecules2023
- Author(s)
  Koichiro Yamakawa, Hiroyuki Kawabe, Kiwa Yamaguchi
- Organizer
  28th Colloquium on High Resolution Molecular Spectroscopy
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-23K26549
[Presentation] Nuclear spin conversion of matrix-isolated molecules2023
- Author(s)
  Koichiro Yamakawa
- Organizer
  Taiwan-Japan Mini-Workshop on Surface Science
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-23K26549
[Presentation] 水素結合クラスターの超高真空下テラヘルツ・赤外分光2022
- Author(s)
  山川紘一郎，那須裕一，鈴木菜摘，清水元希，荒川一郎
- Organizer
  第32回MRS年次大会
- Data Source
  KAKENHI-PROJECT-20K05424
[Presentation] 分子の核スピン異性化とクラスター化に関するテラヘルツ・赤外分光研究2022
- Author(s)
  山川紘一郎
- Organizer
  2022年度日本分光学会年次講演会
- Invited
- Data Source
  KAKENHI-PROJECT-20K05424
[Presentation] Infrared-spectroscopic study of the photolysis in CO-X ice with use of isotopologues2022
- Author(s)
  Akemi Hirayama, Ichiro Arakawa, Koichiro Yamakawa
- Organizer
  22nd International Vacuum Conference
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K05424
[Presentation] Non-destructive observation of nuclear spin conversion in diatomic and polyatomic molecules2022
- Author(s)
  Koichiro Yamakawa
- Organizer
  1st Workshop on Molecular Dynamics at Surfaces
- Invited / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-20K05424
[Presentation] その場テラヘルツ・赤外分光法を用いた分子の振動・核スピンダイナミクスの研究2022
- Author(s)
  山川紘一郎
- Organizer
  日本物理学会第77回年次大会
- Invited
- Data Source
  KAKENHI-PROJECT-20K05424
[Presentation] 希ガス凝縮層中に分離した多原子分子の核スピン転換2021
- Author(s)
  川邉裕之，荒川一郎，山川紘一郎
- Organizer
  2021年日本表面真空学会学術講演会
- Data Source
  KAKENHI-PROJECT-20K05424
[Presentation] 二酸化炭素凝縮層中に捕捉した水素の核スピン転換2021
- Author(s)
  山川紘一郎，石橋篤季，波吉敏信，荒川一郎,
- Organizer
  日本物理学会第76回年次大会
- Data Source
  KAKENHI-PROJECT-20K05424
[Presentation] マトリックス分離した水素の核スピン転換の非破壊観測2020
- Author(s)
  山川紘一郎，石橋篤季，波吉敏信，荒川一郎
- Organizer
  第3回ハイドロジェノミクス研究会
- Data Source
  KAKENHI-PROJECT-20K05424
[Presentation] Nuclear spin conversion of H2 trapped in solid CO22019
- Author(s)
  Koichiro Yamakawa and Ichiro Arakawa
- Organizer
  10th International Conference on Advanced Vibrational Spectroscopy
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K14182
[Presentation] 凝縮系での分子の振動回転および核スピン転換に関する理論・分光研究2019
- Author(s)
  山川紘一郎
- Organizer
  原子衝突学会第44回年会
- Invited
- Data Source
  KAKENHI-PROJECT-18K14182
[Presentation] テラヘルツ・赤外分光法とONIOM計算によるD2Oナノクラスターの分子間振動の研究2019
- Author(s)
  山川紘一郎, 那須裕一，荒川一郎
- Organizer
  第13回分子科学討論会
- Data Source
  KAKENHI-PROJECT-18K14182
[Presentation] Nuclear spin conversion of H2O in a Kr matrix2019
- Author(s)
  Kiwa Yamaguchi, Ichiro Arakawa, and Koichiro Yamakawa
- Organizer
  10th International Conference on Advanced Vibrational Spectroscopy
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K14182
[Presentation] マトリックス分離法を用いたD2Oクラスターの中・遠赤外分光2019
- Author(s)
  田中利弥，荒川一郎，山川紘一郎
- Organizer
  2019年日本表面真空学会学術講演会
- Data Source
  KAKENHI-PROJECT-18K14182
[Presentation] 結晶メタンにおけるオルソ・メタ・パラ異性体間の核スピン転換2019
- Author(s)
  山川紘一郎, 杉本建，荒川一郎
- Organizer
  平成31年度日本分光学会年次講演会
- Data Source
  KAKENHI-PROJECT-18K14182
[Presentation] 低温凝縮系における分子の核スピン転換2019
- Author(s)
  山川紘一郎, 荒川一郎
- Organizer
  2018年度基礎物性シンポジウム
- Data Source
  KAKENHI-PROJECT-18K14182
[Presentation] Nuclear spin conversion among three isomers in crystal II methane measured by infrared spectroscopy2018
- Author(s)
  Sugimoto, T., Nasu, H., Arakawa, I., Yamakawa, K.
- Organizer
  25th International Conference on High Resolution Molecular Spectroscopy
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K14182
[Presentation] Nuclear spin conversion in matrix-isolated water monomer and dimer2018
- Author(s)
  Yamakawa, K., Yamaguchi, K., Arakawa, I.
- Organizer
  25th International Conference on High Resolution Molecular Spectroscopy
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K14182
[Presentation] 超高真空テラヘルツ・赤外分光法を用いた重水クラスターの分子間振動モードの研究2018
- Author(s)
  山川紘一郎，那須裕一，東優一，田中利弥，荒川一郎
- Organizer
  原子衝突学会第43回年会
- Data Source
  KAKENHI-PROJECT-18K14182
[Presentation] Nuclear spin conversion of ammonia isolated in noble gas matrices2018
- Author(s)
  Nagamoto, H., Sugimoto, T., Arakawa, I., Yamakawa, K.
- Organizer
  25th International Conference on High Resolution Molecular Spectroscopy
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K14182
[Presentation] Far- and mid-infrared spectroscopy of matrix-isolated clusters and matrix-sublimated ice of D2O2018
- Author(s)
  Nasu, H., Niwata, K., Azuma, Y., Tanaka, T., Arakawa, I., Yamakawa, K.
- Organizer
  25th International Conference on High Resolution Molecular Spectroscopy
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-18K14182
[Presentation] 低温凝縮系における水素の核スピン転換2018
- Author(s)
  山川紘一郎, 笹川裕矢, 石橋篤季, 波吉敏信, 荒川一郎, 福谷克之
- Organizer
  2018年日本表面真空学会学術講演会
- Data Source
  KAKENHI-PROJECT-18K14182
[Presentation] マトリックス分離法によるD2Oクラスター及び氷の超高真空下テラヘルツ・赤外分光2018
- Author(s)
  山川紘一郎，那須裕一，鈴木菜摘，清水元希，嶋崎陽一，庭田和輝，荒川一郎
- Organizer
  平成30年度日本分光学会年次講演会
- Data Source
  KAKENHI-PROJECT-18K14182
[Presentation] Xe凝縮層中に分離したH2Oの核スピン転換率の温度依存性2018
- Author(s)
  山川紘一郎，山口姫和，荒川一郎
- Organizer
  第12回分子科学討論会
- Data Source
  KAKENHI-PROJECT-18K14182
[Presentation] NH3 の振動・回転・トンネル・核スピン状態とクラスター形成2018
- Author(s)
  永本悠, 杉本建，荒川一郎, 山川紘一郎
- Organizer
  原子衝突学会第43回年会
- Data Source
  KAKENHI-PROJECT-18K14182

1. 福谷克之 (10228900)

# of Collaborated Projects: 2 results

# of Collaborated Products: 0 results
2. ARAKAWA Ichiro

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results
3. 植田寛和

# of Collaborated Projects: 0 results

# of Collaborated Products: 1 results

Yamakawa Koichiro 山川 紘一郎

Research Projects

Research Products

Co-Researchers

非磁性絶縁体と相互作用する水素分子のオルソ・パラ転換Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Elucidation of the unified mechanism of molecular nuclear-spin-conversion with use of rotationally resolved spectroscopyPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Elucidation of nuclear-spin conversion mechanism of water molecules by terahertz and infrared spectroscopyPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

[Journal Article] An Isotope-labeling Study of CO2 Formation Pathways in Molecular Clouds: Ultraviolet Photolysis of CO-H2O Ice2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] 低温凝縮層中の水素及びメタン分子の核スピン転換2023

Author(s)

Journal Title

Data Source

[Journal Article] Fast ortho-to-para conversion of molecular hydrogen in chemisorption and matrix-isolation systems2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Nuclear-spin conversion analysis of ν2 + ν4 combination band of crystalline methane in phase II2021

Author(s)

Journal Title

Data Source

[Journal Article] Terahertz and mid-infrared spectroscopy of matrix-isolated clusters and matrix-sublimation ice of D2O2020

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Terahertz and mid-infrared spectroscopy of matrix-isolated clusters and matrix-sublimation ice of D2O2020

Author(s)

Journal Title

Data Source

[Journal Article] Nuclear Spin Conversion of H2, H2O, and CH4 Interacting with Diamagnetic Insulators2020

Author(s)

Journal Title

DOI

NAID

Data Source

[Journal Article] 凝縮系での分子の振動回転および核スピン転換に関する理論・分光研究2020

Author(s)

Journal Title

Data Source

[Journal Article] その場テラヘルツ・赤外吸収分光装置の開発2020

Author(s)

Journal Title

Data Source

[Journal Article] その場テラヘルツ・赤外吸収分光装置の開発2020

Author(s)

Journal Title

Data Source

[Journal Article] Fast nuclear-spin conversion of H2 trapped and polarized in a CO2 matrix2020

Author(s)

Journal Title

Data Source

[Journal Article] Spectroscopic determination of interconversion rates among three nuclear spin isomers of methane in crystalline II2019

Author(s)

Journal Title

Data Source

[Journal Article] Excitation of infrared-inactive vibrational modes in a polyatomic molecule through hot band transitions2019

Author(s)

Journal Title

DOI

Data Source

Yamakawa Koichiro 山川紘一郎