Abstract
The E1Σ+–X1Σ+ system attributed to the SiO molecule has been obtained in absorption in flash discharges through SiH4 containing traces of oxygen. The region from 1 650 Å to 2 000 Å has been studied. The fifteen deepest vibrational levels of the E state have been analysed. The following molecular constants have been derived:
T0 = 52 578.31 cm-1
ω'e = 675.52 cm-1
ω'eχ'e = 4.204 cm-1
B'e = 0.54727 cm-1
r'e = 1.7399 Å
D'e = 1.43 × 10-6 cm-1
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