Fig. 5. (A) P(TKER) distribution distributions derived from H atom TOF spectra recorded following photolysis of a jet-cooled C₂H₆ sample at λ = 121.6 nm with the ε vector aligned at ϕ = 0, 54.7 and 90° to the detection axis and (B) the β(TKER) distribution derived therefrom. As in Fig. 4, the individual data sets are offset vertically for display purposes and the high TKER part of the data are accentuated by also plotting [P(TKER)]^1/2 distributions (dotted lines). The TKER_max values associated with primary C–H bond fission (channel (7)) and the two lowest energy three-body dissociation channels (2) and (9) from Table 1 are indicated by vertical arrows.