Abstract
We report on the experimental observation of high-resolution rotationally resolved spectra of vibrational polyads and of methane lying approximately halfway to the dissociation energy. The spectra were obtained at 295 K and 124 K and pressures as low as 200 mbar using a highly sensitive laser-induced grating (LIG) technique. The spectra correspond to direct single-photon absorption transitions from the ground state with cross sections as low as to cm molecule. We discuss theoretical developments toward the complete analysis of these transitions.
2 More- Received 13 November 2009
DOI:https://doi.org/10.1103/PhysRevA.82.012503
©2010 American Physical Society