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Fig. 3. Time-of-flight mass spectrum of ions formed following photoexcitation of a jet-cooled sample of C2H6 seeded in He at λ = 121.6 nm (hν = 10.19 eV). Inset: expanded spectra illustrating the λ-dependence of the m/z 14 (CH2+) and m/z 15 (CH3+) peak intensities.