High-resolution IR cavity ring-down spectroscopy of jet-cooled free radicals and other species

Physical Chemistry Chemical Physics : PCCP
Shenghai WuTerry A Miller

Abstract

Initial spectral results are reported from a newly constructed cavity ringdown spectrometer. The apparatus incorporates a slit-jet expansion, with or without a discharge, to produce cold sample molecules. High spectral resolution in both the near- and mid-IR is obtained by using stimulated Raman scattering of the pulsed amplified output of a cw Ti:Sa ring laser. Molecular spectra presented include the electronic near-IR transitions a (1)Delta(g)(-)<-- X (3)Sigma(g)(-) of O(2) and B (3)Pi(g)<-- A (3)Sigma(u)(+) of metastable N(2) and vibrational overtones of H(2)O (polyad 2) and the OH radical. Fundamental vibrational transitions of CH(3) (nu(3)) in the mid-IR are also observed. This apparatus has demonstrated the potential for obtaining high-resolution spectra of both reactive and non-reactive species throughout the entire IR region.

Citations

Sep 12, 2013·Faraday Discussions·Kirill ProzumentRobert W Field
Nov 18, 2009·The Journal of Chemical Physics·Gabriel M P JustW Leo Meerts
May 6, 2010·The Review of Scientific Instruments·Bo GaoShui-Ming Hu
Apr 7, 2007·The Review of Scientific Instruments·Patrick Dupré, Terry A Miller
May 17, 2015·The Journal of Chemical Physics·Terrance CoddTerry A Miller
Jul 4, 2008·Physical Chemistry Chemical Physics : PCCP·Erin N SharpTerry A Miller
Apr 30, 2010·Physical Chemistry Chemical Physics : PCCP·Gabriel M P JustW Leo Meerts
Dec 20, 2019·Proceedings of the National Academy of Sciences of the United States of America·Kirill ProzumentRobert W Field
Mar 3, 2018·The Review of Scientific Instruments·Thomas LewisMark A Blitz
Feb 3, 2007·The Journal of Physical Chemistry. a·Patrick RupperTerry A Miller
Apr 3, 2019·The Journal of Physical Chemistry. a·Md Asmaul RezaJinjun Liu

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