Average product translation

Table III. Some Average Product Translational Energies, Reactive Cross Sections and the Ratios between CH, Emission and H Emission Channels (34, 35). 

Energetics and Average Product Translational Energies, Fluorine + Substituted Benzenes... 

A number of conclusions can be reached from an examination of these data. We find that average product translational energy does not correlate well with reaction exoergicity. In... 

Table B2.5.3. Product energy distribution for some IR laser chemical reactions. (E ) is the average relative translational energy of fragments, is the average vibrational and rotational energy of polyatomic fragments, and/ is the fraction of the total product energy appearing as translational energy [109],...

The following conventions are used in the tables to summarise the types of information obtained in the various experiments. (F t.v.r ) refers to a measurement of the average energy disposal into product translation, vibration and rotation. JVTiViR means that the detailed form of the product translational, vibrational or rotational distribution has been measured. An entry under (FE > means that information has been obtained about the population of various electronic product states in a reaction, whereas Ne denotes that analysis has been accomplished of the vibrational or rotational states populated in a given electronic state. 

Fig. 12. Average final translational energies of hyperthermal OH products as a function of exit angle, corresponding to (E,) = 47 kJ mol" (top panel) and (E,) = 21 kJ mol" (bottom panel) and to three incident angles, 60°, 45°, and 30°. Solid lines connect the data points. Representative error bars are shown.

Figure 4- Average fractions of energj- in products as a function of collision energj- for the H elimination reaction channel in the O( P) + methane, ethane and propane reactions. Thick lines show average fractions of product translational energy and thin lines are for average fractions of internal cnergv in the oxyradical molecules.

In principle, the reaction cross section not only depends on the relative translational energy, but also on individual reactant and product quantum states. Its sole dependence on E in the simplified effective expression (equation (A3.4.82)) already implies unspecified averages over reactant states and sums over product states. For practical purposes it is therefore appropriate to consider simplified models for tire energy dependence of the effective reaction cross section. They often fonn the basis for the interpretation of the temperature dependence of thennal cross sections. Figure A3.4.5 illustrates several cross section models. 

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