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Updated: Jun 6, 2026
09:40
Measurement and Analysis of Atomic Hydrogen and Diatomic Molecular AlO, C2, CN, and TiO Spectra Following Laser-induced Optical Breakdown
Published on: February 14, 2014
N(2)O weak lines observed between 3900 and 4050 cm from long path absorption spectra
Hervé Herbin1, Nathalie Picqué, Guy Guelachvili
1Laboratoire de Photophysique Moléculaire, CNRS; Univ Paris-Sud, Bât. 350, F-91405 Orsay Cedex, France.
Journal of Molecular Spectroscopy
|December 15, 2010
Summary
New measurements precisely map previously unobserved nitrous oxide (N2O) transitions using advanced laser spectroscopy. These findings offer valuable data for atmospheric monitoring applications.
Area of Science:
- Atmospheric Spectroscopy
- Molecular Physics
- Environmental Science
Background:
- Nitrous oxide (N2O) is a significant greenhouse gas.
- Accurate spectroscopic data is crucial for atmospheric monitoring and climate modeling.
- Previous studies have limited data on weak N2O transitions.
Purpose of the Study:
- To precisely measure previously unobserved nitrous oxide transitions.
- To provide accurate spectroscopic data for atmospheric research.
- To enhance the understanding of N2O spectral properties.
Main Methods:
- Intracavity laser absorption spectroscopy (ICLAS) was employed for high-sensitivity measurements.
- Time-resolved Fourier transform (TRFT) spectrometry was used for spectral analysis.
- High accuracy (order of 10(-3) cm(-1)) was achieved in transition position measurements.
Main Results:
- 1637 weak nitrous oxide transitions were assigned and measured.
- Data covers 42 vibrational transitions, with 33 observed for the first time.
- Accurate transition positions were determined for these previously uncharacterized spectral lines.
Conclusions:
- The study provides a comprehensive dataset of weak N2O transitions.
- These measurements significantly improve the available spectroscopic information for nitrous oxide.
- The data is highly valuable for improving atmospheric monitoring and climate change studies.
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