No abstract

Electron capture by Li+ and H projectiles in grazing scattering from Cu(111) and Cu(110) surfaces is studied experimentally and theoretically. Whereas data for Cu(110) can be described by established theoretical methods treating resonant charge transfer with a free-electron metal, data for Cu(111) show pronounced deviations from this approach. We interpret our observations by the effect of the projected L-band gap of the Cu(111) surface. In particular, the quantum states of reduced dimension (2D surface state continuum) play a dominant role in electron transfer.

No abstract

This paper reviews the concepts, status and challenges for the DRAM scaling down to 40nm. The technologies that are discussed are the DRAM cell capacitor structures and materials, as well as the cell transistor structures.

A generalized kinetic mechanism for photochemical smog is formulated and tested. The most important feature of the mechanism is its general nature; that is, the mechanism is applicable to a large number of hydrocarbons and, ultimately, the entire atmospheric mix. By design, the mechanism takes advantage of the common features of hydrocarbon and free radical reactions to maintain at a minimum the number of species included while at the same time retaining a high degree of detail, especially as concerns the chemistry of the inorganic species. The mechanism is tested using n-butane-NO*, propylene-NOx, and n-butane-propylene-NO* smog chamber data at 13 different sets of initial reactant concentrations and a wide variety of hydrocarbon to NO* ratios. The predicted effect of initial reactant ratios on ozone formation is in agreement with the data that were analyzed.