Anisotropy parameters describing the angular dependence of photoionization delay are defined. The formalism is applied to results obtained with relativistic random phase approximation exchange for from outermost $s$-orbitals in selected rare-gas atoms. Any Wigner induced here by effects, while measurable atomic exhibits such a also nonrelativistic limit. contributions anisotropy different sourc...

A two-parameter semiempirical theory of positron scattering and annihilation is developed and used to investigate the behavior of positrons interacting with the rare gases and metal vapors. The two-parameter theory is able to do a reasonable job of reproducing existing cross section and annihilation data for the rare gases. A model-potential calculation that correctly predicts the behavior of t...

Gas–surface interactions have been a topic of much study for the past 50 years, both to increase our knowledge of fundamental interactions in matter and to enhance the many useful processes that occur at surfaces. In studies of the fundamental behavior of rare gases at quasicrystal surfaces, it was demonstrated that under certain conditions the gas films adopt the quasicrystalline structure, an...

UV/VUV photon fluxes in plasma materials processing have a variety of effects ranging from producing damage to stimulating synergistic reactions. Although in plasma etching processes, the rate and quality of the feature are typically controlled by the characteristics of the ion flux, to truly optimize these ion and photon driven processes, it is desirable to control the relative fluxes of ions ...

Arising from the inability of theoretical calculations to give accurate descriptions of (shear) viscosity in rare gases at high densities, we investigated the likely cause of discrepancy between theory and experiments. Molecular Dynamics simulations were performed to calculate transport coefficents and collision frequency of rare gases at high densities and different temperatures using a Lennar...

A ubiquitous goal in plasma-enhanced chemical vapour deposition (PECVD) is to describe the correlation between film properties and categorical and quantitative input variables. The correlations within the high-dimensional parameter space are described using a multivariate model. Bayesian group analysis is employed to assess the grouping structures of the set of data vectors. This allows to iden...