Forward peaked angular distributions

All of these workers obtained essentially similar results. The angular distributions are peaked at forward angles as shown in Fig. 26. The energy spectra falls as with 1.7< 2.2 up to an energy of 140 to I90 Mev where there is... 

In summary, the H + HD reaction shows little sign of resonance scattering in the ICS. Furthermore, the product distributions without angle resolution show no unusual behavior as functions of energy that might indicate resonance behavior. On the other hand, the forward peaking in the angular product distribution does appear to reveal resonance structure. Since time-delay analysis is at present not possible in a molecular beam experiment, it is the combination of a sharp forward peak with the unusual... 

Figure 1.7 The in-plane lab angular distribution of KBr from K + Br2 [2]. The Newton diagram is given for the most probable beam velocities (both beams are unselected and their temperature is given), and the circles indicate the length of u Br vectors corresponding to various values of E (kcal/mole). The simple interpretation of these results is to equate the lab peak at 0 = 17° with a c.m. peak at 0 = 0° (direct forward scattering) and hence estimate 1.2 kcal/mole.

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