Electrons plan wave

Figure 10 Angular distributions of electrons ejected from helium by 2-MeV protons. The experimental data are from Ref 54 theoretical results are the binary encounter approximation of Bonsen and Vriens [52] and the plan wave is the Born calculation of Madison [51].

The following presentation is limited to closed-shell molecular orbital wave-functions. The first section discusses the unique ability of molecular orbital theory to make chemical comparisons. The second section contains a discussion of the underlying basic concepts. The next two sections describe characteristics of canonical and localized orbitals. The fifth section examines illustrative examples from the field of diatomic molecules, and the last section demonstrates how the approach can be valuable even for the delocalized electrons in aromatic ir-systems. All localized orbitals considered here are based on the self-energy criterion, since only for these do the authors possess detailed information of the type illustrated. We plan to give elsewhere a survey of work involving other types of localization criteria. 

An important attraction of all of these fuel cell systems, both as main vehicle power systems and as APUs, is their ability to support the new wave of vehicle electronics that is being introduced. New or planned electronic gadgetry on vehicles includes navigation systems extensive on-board communications voice-actuated controls exterior alternating current (ac) power supplies computer-controlled, power-... 

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