New combination bands in 12C13CH2 around 0.83μm recorded using FT-ICLAS

The acetylene ground state saga

“…An interesting instrumental challenge in the adaptation of ICLAS to FTS replacing spectrographs as in the usual literature was to synchronize the pulsed character of the technique to the FT sampling procedure. The ULB set-up is described in [58], and applied in [61,58,27,62,59]. The technique was also developed by other groups (e.g.…”

The FT absorption spectrum of13CH12CH (III): vibrational states in the range 6750 to 9500 cm−1

“…The ranges 3800-6750 [1] and 9500-10000 [2] cm −1 were considered in two previous, recent papers. Even earlier studies focused either on the lower energy region [3][4][5], or on overtones recorded using Fourier transform intracavity laser absorption spectroscopy [6]. The present investigation fills the remaining energy gap, thus between 6750 and 9500 cm −1 .…”

Overtone spectroscopy of molecular complexes containing small polyatomic molecules

“…The experimental conditions and the analysis of the bands are reported in [151]. The same technique was used to record overtone spectra of 2ν 1 + ν 2 + ν 3 in 12 C+ 13 C acetylene [152], and for absolute intensity measurements of ν 1 + 3ν 3 in normal acetylene [153], as highlighted in Figure 8(b) and Figure 8. (Colour online) Examples of overtone spectra recorded at CQP/ULB-Brussels using FT-ICLAS (experimental conditions are to be found in the mentioned references): (a) 4ν 1 + 2ν 4 -ν 1 , 4ν 1 + ν 4 and 2ν 1 + 2ν 3 + ν 4 + 4ν 5 in 12 C 2 HD, after [151]; (b) 2ν 1 + ν 2 + ν 3 in 12 C 13 CH 2 , after [152]; (c) ν 1 + 3ν 3 in 12 C 2 H 2 , after [153].…”