Precise frequency measurement of terahertz lines of astronomically interesting molecules and ions

Fusakazu Matsushima, Tomohisa Yonezu, Kaori Kobayashi, Yoshiki Moriwaki, Kojiro Takagi, Takayoshi Amano

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Frequencies of pure rotational transitions of molecular anions or cations which are important in the studies of interstellar chemistry are measured precisely by using an Evenson-type tunable far-infrared spectrometer (TuFIR) based on the difference frequency generation of two CO 2 lasers. The specs (accuracy, sensitivity) of the spectrometer is introduced together with the examples of the studies of cations (HeH + , H 2 D + , etc), and anions (OH - , OD - ). Also, recent improvement of the spectrometer using extended negative glow discharge cell is shown with preliminary studies of N 2 H + .

Original languageEnglish
Title of host publicationProceedings of the International Conference of Computational Methods in Sciences and Engineering 2010, ICCMSE 2010
EditorsTheodore E. Simos, Theodore E. Simos, George Maroulis, Theodore E. Simos, Theodore E. Simos
PublisherAmerican Institute of Physics Inc.
Pages384-387
Number of pages4
ISBN (Electronic)9780735412828
DOIs
StatePublished - 2015
EventInternational Conference of Computational Methods in Sciences and Engineering 2010, ICCMSE 2010 - Psalidi, Kos, Greece
Duration: 2010/10/032010/10/08

Publication series

NameAIP Conference Proceedings
Volume1642
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

ConferenceInternational Conference of Computational Methods in Sciences and Engineering 2010, ICCMSE 2010
Country/TerritoryGreece
CityPsalidi, Kos
Period2010/10/032010/10/08

Keywords

  • Far-infrared
  • Molecular Ion
  • Spectroscopy
  • Terahertz

ASJC Scopus subject areas

  • General Physics and Astronomy

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