High precision terahertz frequency measurement of rotational transitions of molecules and ions prepared for the investigation of interstellar molecules

• Project/Area Number: 26400226
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Astronomy
• Research Institution: University of Toyama
• Principal Investigator: Matsushima Fusakazu 富山大学, 大学院理工学研究部(理学), 教授 (40142236)
• Co-Investigator(Kenkyū-buntansha): 森脇 喜紀 富山大学, 大学院理工学研究部(理学), 教授 (90270470) ; 小林 かおり 富山大学, 大学院理工学研究部(理学), 准教授 (80397166)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000); Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2014: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
• Keywords: テラヘルツ / 遠赤外 / 電波天文学 / 分子イオン / 分光学 / 遠赤外分光 / 量子エレクトロニクス / 星間分子 / 電波天文 / 分子分光

Outline of Final Research Achievements

Rotational transition frequencies of molecules and molecular ions were measured precisely with an accuracy of several tens of kHz by using far-infrared spectrometer in Toyama University. Measured species were D2H+, 15NH3 and HCO+ (including its isotopomers). Obtained spectral data supports the far-infrared investigations in several international research projects of interstellar species (such as ALMA, SOFIA). Our data of D2H+ successfully contributed to improve molecular parameters of this species.

Research Products

• [Journal Article] THz spectroscopy of D2H+ (2017)
  • Author(s): S. Yu, J.C. Pearson, T. Amano, F. Matsushima
  • Journal Title: Journal of Molecular Spectroscopy Volume: 331 Pages: 6-8
  • DOI: 10.1016/j.jms.2016.10.012
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Terahertz spectroscopy of N18O and isotopic invariant fit of several nitric oxide isotopologs (2015)
  • Author(s): H. Mueller, K.Kobayashi, K.Takahashi, K.Tomaru, F.Matsushima
  • Journal Title: Journal of Chemical Physics Volume: 310 Pages: 92-98
  • Peer Reviewed
• [Presentation] Frequency measurement of rotational transitions of 15NH3 using Evenson-type tunable far-infrared spectrometer (2017)
  • Author(s): M. Fujita, E. Yamaguchi, Y. Okano, Y. Nagakusa, K. Yamamoto, K. Kobayashi, Y. Moriwaki, H.S.P. Mueller, F. Matsushima
  • Organizer: he 6th International Workshop on Far-Infrared Tchnologies and The 2nd International Symposium on Development High Power Terahertz Sxience and Technology (IW-FIRT2017/DHP-TST2017)
  • Place of Presentation: Fukui, Fukui University
  • Year and Date: 2017-03-08
  • Int'l Joint Research
• [Presentation] 15NH3分子回転スペクトル線のテラヘルツ域周波数測定 (2016)
  • Author(s): 岡野芳樹、山口瑛真里、藤田瑞樹、長草裕志、山本航平、森脇喜紀、小林かおり、松島房和
  • Organizer: 原子衝突学会第41回年会
  • Place of Presentation: 富山市、富山大学
  • Year and Date: 2016-12-11
• [Presentation] 遠赤外領域での15NH3分子の分光 (2016)
  • Author(s): 長草裕志、山口瑛真里、岡野芳樹、藤田瑞樹、山本航平、森脇喜紀、小林かおり、松島房和
  • Organizer: 日本物理学会北陸支部定例学術講演会
  • Place of Presentation: 富山市、富山大学
  • Year and Date: 2016-11-26
• [Presentation] テラヘルツ領域における15NH3分子の回転スペクトル測定 (2016)
  • Author(s): 山口瑛真里、岡野芳樹、藤田瑞樹、長草裕志、山本航平、森脇喜紀、小林かおり、松島房和
  • Organizer: テラヘルツ科学の最先端III
  • Place of Presentation: 福井県三国市、三国観光ホテル
  • Year and Date: 2016-11-24
• [Presentation] 星間分子イオンの遠赤外領域回転遷移周波数の測定 (2016)
  • Author(s): 藤田瑞樹，鈴木まり，山口瑛真里，松島房和，森脇喜紀，天埜堯義
  • Organizer: 日本物理学会2016年春季大会
  • Place of Presentation: 東北学院大学
  • Year and Date: 2016-03-22
• [Presentation] 遠赤外領域でのD2H+分子の分光 (2015)
  • Author(s): 久蔵仁美，山口瑛真里，藤田瑞樹，鈴木まり，松島房和，森脇喜紀，天埜堯義
  • Organizer: 日本物理学会北陸支部学術講演会
  • Place of Presentation: 金沢大学
  • Year and Date: 2015-11-28
• [Presentation] High-J rotational lines of 13C isotopologues of HCO+ measured by using Evenson-type tunable FIR spectrometer (2015)
  • Author(s): Suzuki, M., Oishi, R., Moriwaki, Y., Matsushima F., and Amano, T.
  • Organizer: 70th International Symposium on Molecular Spectroscopy
  • Place of Presentation: University of Illinois
  • Year and Date: 2015-06-22
  • Int'l Joint Research
• [Presentation] High-J rotational lines of 13C isotopologues of HCO+ meagured by using evenson-type tunable FIR spectrometer (2015)
  • Author(s): M.Suzuki. R.Oishi, Y.Moriwaki, F.Matsushima
  • Organizer: 70th International Symposium of Melecular Spectroscopy
  • Place of Presentation: Urbana-Shanpaign, Illinoi, USA
  • Year and Date: 2015-06-22
• [Presentation] 遠赤外領域でのHCO+イオンの13C同位体分子の分光 (2015)
  • Author(s): 鈴木まり
  • Organizer: 日本物理学会年会
  • Place of Presentation: 早稲田大学
  • Year and Date: 2015-03-22
• [Presentation] 遠赤外領域でのH13CO+イオンの分光 (2014)
  • Author(s): 吉田開、荒谷聡志、藤田瑞樹、鈴木まり、大石諒、松島房和、森脇喜紀、天埜堯義
  • Organizer: 日本物理学会北陸支部定例学術講演会
  • Place of Presentation: 福井大学
  • Year and Date: 2014-12-13
• [Presentation] High-J rotational lines of HCO+ and its isotopologues meagured by using evenson-type tunable FIR spectrometer (2014)
  • Author(s): R.Oishi, T.Miyamoto, M.Suzuki, Y.Moriwaki, F.Matsushima
  • Organizer: 69th International Symposium of Melecular Spectroscopy
  • Place of Presentation: Columbus, Ohio, USA
  • Year and Date: 2014-06-16
• [Presentation] HCO+, DCO+のテラヘルツ域回転遷移の周波数測定 (2014)
  • Author(s): 大石諒、宮本達也、鈴木まり、森脇喜紀、松島房和、天埜堯義
  • Organizer: 分子分光研究会
  • Place of Presentation: 東京大学駒場
  • Year and Date: 2014-05-16