Knowledge Bank

The $\nu 2$ parallel band of $SiH3D$ has been recorded in the region from 1690 to 1485 $cm-1$ with a resolution high enough to separate the K = 1 from the K = 2 subband although the separation from the K = 0 to the K = 1 was not achieved. The spectra of the three molecules corresponding to the three isotopes of silicon are clearly observed. The Q branch for the main Isotope, $\mathrm{<mrow\; data-mjx-texclass="ORD">28</mrow>}Si$, is almost entirely resolved. In the region between P(8) and P(9) another Q branch is observed which is likely to be the center of the $2\nu 6$ band. The analysts of the band is in progress.