Photoabsorption spectrum and CCl 2(Ã 1B 1) radical formation in the VUV excitation of C 2Cl 6

Abstract

The photoabsorption cross section and fluorescence excitation spectra of C 2Cl 6 have been investigated in the 105–200 nm region using synchrotron radiation as a light source. The absorption bands observed are assigned as the Rydberg excitations. The fluorescence yield starts at about 160 nm and increases to Φ=0.18 at 111.5 nm. The emitting species is CCl 2(Ã 1B 1→X̃ 1A 1); its radiative lifetime was determined to be 1.83±0.02 μs.