Best pair of 3.3-μm-band transitions for isotopomer abundance ratio measurements of13CH4 to12CH4

Kenji Anzai, Hiroyuki Sasada, Naohiro Yoshida

研究成果: Article

6 引用 (Scopus)

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To determine the isotopomer abundance ratio of 13CH4 to 12CH4 by infrared absorption spectroscopy, we selected the v3 P(6) A1 transition of 13CH4 at 2947.6970cm-1 and the V2+ V4 R(6) F 1 transition of 12CH4 at 2947.4246cm -1, which simultaneously satisfy six necessary and desirable conditions, including the higher absorption intensity for the less abundant species, no overlapping with other spectral lines, and small temperature dependence. Then, from the recorded spectra of these transitions using a widely tunable spectrometer based on a difference-frequency-generation light source, we determined the absorption coefficient ratio from the individual absorbance with a precision of 0.3%.

元の言語English
ページ(範囲)1717-1721
ページ数5
ジャーナルJapanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
46
発行部数4 A
DOI
出版物ステータスPublished - 2007 4 5

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

フィンガープリント Best pair of 3.3-μm-band transitions for isotopomer abundance ratio measurements of<sup>13</sup>CH<sub>4</sub> to<sup>12</sup>CH<sub>4</sub>' の研究トピックを掘り下げます。これらはともに一意のフィンガープリントを構成します。

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