Photoabsorption and photoassociation into the XeF(B) excimer state

The XeF(B ← X) excitation spectrum is determined experimentally over the range 28000–30000 cm−1 by measuring laser induced fluorescence from Xe2F triatomic excimer molecules. Because of the linearity of this technique for a broad range of intensity, the opportunity to analyze spectral band intensities quantitatively is achieved. The absorption spectrum simulated in the same region demonstrates a satisfactory agreement between experimental and theoretical spectra both in relative intensities and shapes of spectral bands. The cross sections of photoabsorption and photoassociation into the XeF(B) state are calculated, the maximal values amounting to 1.3 × 10−16 cm2 and 3.3 × 10−39 cm5, respectively.