Product kinetic energy distributions

Product kinetic energy distributions discussed in terms of statistical theories... 

Fig. 29. Product kinetic energy distributions for E[ = 25, 50, 100, and 200 eV. The solid line is a best fit to the total distribution using linear cascade theory (Sigmund, 1969). (From Abrams and Graves, 2000c.)...

The problems of distinguishing H+ produced from H2 by electron impact from the product of dissociative charge transfer reactions between He + and H2 can be studied by determining the kinetic energy distribution in the product H+ (6). The reaction He+ + H2 is exothermic by 6.5 e.v. if the products are atoms or atomic ions. If the reaction is studied with HD substituted for H2, then the maximum kinetic energy that can be deposited in the D + is approximately 2.16 e.v. On the other hand, D + can be produced by electron impact with 5.5 e.v. kinetic energy. If a retarding potential is applied at the repeller in the ion-source of a mass spectrometer, then it is possible to obtain curves related to the kinetic... 

Hence, in a benzene-iodine cluster, excitation at 266 nm leads to the charge-transfer potential energy surface. Using femtosecond excitation one can detect the decay of the initially populated state, the appearance of the products and their kinetic energy distribution and alignment (with respect to the pump laser) ]55, 56,... 

Figure 16. Diagram showing different possible H - - CO2 CM kinetic energies associated with the photolysis of room temperature samples, based on the internal states of the other fragment involved in photolytic H atom production (i.e., X-atom spin-orbit states, SH vibrational levels). No attempt was made to display the different H atom kinetic energy distributions. The reaction probability versus energy is shown on the right.

Fig. 5. Kinetic energy distributions of SiF4 etch products evolved from a silicon surface exposed to 3-keV Ar+ ions and 5 x 10 SF molecules/cm s, at two surface temperatures, 50 and 100 K. Solid curves represent collision cascade distributions with a surface binding energy (Co) of 0.05 eV. (From Osstra et al., 1986.)...

Fig. 9. Kinetic energy distributions for physically sputtered products obtained from the simulation (symbols). Data taken from all simulated layers with F/Si > 0.39 for the chemically sputtering results, represented here as the dashed, dot-dash, and dotted lines, assuming a Maxwell-Boltzmann kinetic energy distribution and 300 K. Solid-line fit to the symbols is collision cascade model with a fitted value of Uq. (From Barone and Graves, 1995a.)...

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