Knowledge Bank

When a Ne: $BF3$ sample is codeposited at approximately 5 K with a beam of neon atoms that has been excited in a microwave discharge, all three vibrational fundamentals and the $(\nu 1+\nu 3)$ combination band of $BF2$ are identified. The $ \nu $3 absorption of $BF2+$ is also present. The positions of these absorptions are close to those obtained in recent {ab initio} $calculations.1$ Other new absorptions can be assigned to $BF3+$, which photodissociates in the red spectral region.