3 years ago

# Discovery of New Lines in the $R9$ Multiplet of the $2{v}_{3}$ Band of ${^{12}\mathrm{C}\mathrm{H}}_{4}$

H. Lin, L. Yang, X. J. Feng, J. T. Zhang
We present the first results for resolving methane (${\mathrm{CH}}_{4}$) line transition frequencies down to the kilohertz level for overlapping lines using comb-linked cavity ring-down spectroscopy, while most available laboratory measurements, having resolution at the megahertz level, cannot separ...