کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7846008 | 1508604 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
High accuracy line positions of the ν1 fundamental band of 14N216O
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
طیف سنجی
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چکیده انگلیسی
The ν1 fundamental band of N2O is examined by a novel spectrometer that relies on the frequency locking of an external-cavity quantum cascade laser around 7.8 µm to a near-infrared Tm:based frequency comb at 1.9 µm. Due to the large tunability, nearly 70 lines in the 1240-1310 cmâ1 range of the ν1 band of N2O, from P(40) to R(31), are for the first time measured with an absolute frequency calibration and an uncertainty from 62 to 180â¯kHz, depending on the line. Accurate values of the spectroscopic constants of the upper state are derived from a fit of the line centers (rms â 4.8â¯Ãâ¯10â6 cmâ1 or 144â¯kHz). The ν1 transitions presently measured in a Doppler regime validate high accuracy predictions based on sub-Doppler measurements of the ν3 and ν3-ν1 transitions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Quantitative Spectroscopy and Radiative Transfer - Volume 211, May 2018, Pages 172-178
Journal: Journal of Quantitative Spectroscopy and Radiative Transfer - Volume 211, May 2018, Pages 172-178
نویسندگان
Bidoor AlSaif, Marco Lamperti, Davide Gatti, Paolo Laporta, Martin Fermann, Aamir Farooq, Oleg Lyulin, Alain Campargue, Marco Marangoni,