Artículos de revistas
Infrared optoacoustic spectroscopy of (CD3OD)-C-13 around 9P CO2 laser lines
Registro en:
International Journal Of Infrared And Millimeter Waves. Kluwer Academic/plenum Publ, v. 21, n. 4, n. 621, n. 632, 2000.
0195-9271
WOS:000086326100012
10.1023/A:1006640021819
Autor
Viscovini, RC
Scalabrin, A
Pereira, D
Institución
Resumen
In this work we present the results of an investigation about Doppler limited infrared absorbing transitions of the in-plane methyl-rocking and the asymmetric methyl deformation modes of (CD3OD)-C-13 by means of optoacoustic detection. This is an alternative and attractive technique to be applied to this methanol isotopomer, in comparison to Fourier transform spectroscopy. In fact the contamination problem associated with the fast exchange of OD by OH in the molecule limits the use of the Fourier transform technique. Using a waveguide CO2 laser of 290 MHz tunability on each line we were able to observe 20 IR absorptions, most of them of large offset. The data will be useful in theoretical analysis of this molecule, as well as in the generation of FIR laser radiation in optically pumped molecular laser. 21 4 621 632