Knowledge Bank

The $D2\Sigma +\to A2\Sigma +$ and $E2\Sigma +\to D2\Sigma +$ electronic systems have been recorded for the $\mathrm{<mrow\; data-mjx-texclass="ORD">14</mrow>}N16O$ and $\mathrm{<mrow\; data-mjx-texclass="ORD">15</mrow>}N16O$ molecules in the $7000cm-1$ - 9500 $cm-1$ spectral range with a Fourier Transform Interferometer. The analysis of the 0-0, 1-1, 2-2 bands gave us accurate values for the faint spin-rotation constant measured for the first time in the states $D2\Sigma +$ and $E2\Sigma +$. Our values for the $A2\Sigma +$ state are compared with recent laser two photons measurements.