Scattering and bound-state solutions to the wave equation for one electron in the presence of a physical dipole

This paper presents a quantum-mechanical analysis of the interaction of one electron with a physical dipole (two physically separated charges). Aspects of threshold laws in the continuous spectrum are treated. In addition there are determinations of energies of some dipole bound states. The bound-state calculations are used as a model for certain high dipole moment molecules, where, together with empirical data, an equivalent dipole length may be determined. These model calculations predict that the bound dipole orbital in high dipole molecule ions should have a node between its valence part and the more remote part where the majority of the charge resides. Some results from the two parts of the treatment are brought together to calculate the asymmetry factor of the photoelectron signal for uracil, measured by Schiedt et al

Electron tunneling, charge transfer, and the intermolecular forces between two H\u3csub\u3e2\u3c/sub\u3e molecules

The spherically averaged van der Waals potential for the system H2–H2 has been calculated using a nonorthogonal CI method based on SCF orbitals for the individual molecules. With suitable restrictions on the CI calculation we have isolated various contributions to the van der Waals potential, and have found that charge transfer and dispersion effects are comparable to distances corresponding to the potential minimum. The charge transfer contribution is further discussed in terms of a mechanism involving electron tunneling through the intervening space between the molecules. Our calculation gives a spherically averaged van der Waals well depth of 2.96 meV at 3.49 Å. Experimental values are 3.00 meV at 3.49 Å. The Journal of Chemical Physics is copyrighted by The American Institute of Physics

The structures of \u3ci\u3ec\u3c/i\u3e-C\u3csub\u3e4\u3c/sub\u3eF\u3csub\u3e8\u3c/sub\u3e and \u3ci\u3ec\u3c/i\u3e-C\u3csub\u3e4\u3c/sub\u3eF\u3csub\u3e8\u3c/sub\u3e\u3csup\u3e¯\u3c/sup\u3e and the adiabatic electron affinity of \u3ci\u3ec\u3c/i\u3e-C\u3csub\u3e4\u3c/sub\u3eF\u3csub\u3e8\u3c/sub\u3e

Calculations at the 6311G(dps) level have been used to elucidate the structures of octafluorocyclobutane c-C4F8 and its negative ion c-C4F8¯. With no empirical adjustments, we obtain 0.640 eV for the adiabatic electron affi nity of c-C4F8. This may be compared with an experimental value of 0.63 ± 0.05 eV from the FALP method. c-C4F8 has unusual features in that there is an increase in symmetry, D2d to D4h, in going from the neutral molecule to the negative ion, and the singly occupied molecular orbital in the ion has an unexpected nodal structure

Complex energy shift and background phase shift for simulated electron-molecular shape resonances

Feshbach-Fano resonance theory (FFRT) is used to determine the energy dependence of the complex energy shift function, consisting of the real energy shift and the resonance width, and the background phase shift for several simulated molecular shape resonances. Attention is paid to the way the choice of the quasibound state (QBS) function required in the FFRT affects these energy dependencies. An overlap criterion for choosing an optimal QBS function is proposed. Using our treatment on t-butylchloride, carbon tetrachloride, ethylene, and benzene, we give numerical results for specific cases of l = 1 through 4. We find that the real energy shift function does not vary greatly over the width of the resonance, although the magnitude of the shift can be fairly large. We also find that the behavior of the background phase shift due to orthogonality scattering is sensitive to the presence of long-range potentials

El modelo de desarrollo con inclusión y su inserción en la multipolaridad: Agendas y geopolíticas en conflicto

Durante los últimos diez años, la Argentina y la región encararon un cambio paradigmático.1 Esto se produce en primer lugar a nivel de modelo de acumulación o de desarrollo, y por tanto del rol del Estado en relación con la economía y la sociedad. La crisis del modelo neoliberal generó una praxis concretada en otro rol del Estado y políticas públicas, y una concepción original sobre la resolución de la crisis de endeudamiento impuesta por la financiación de la economía. Un enfoque analítico en el cual confluyen matrices nacional-populares, neodesarrollistas, progresistas y de izquierda latinoamericana que terminan por perfilar un modelo de desarrollo con inclusión social.Fil: Garcia Delgado, Daniel Reynaldo. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Facultad Latinoamericana de Ciencias Sociales; Argentin

Projected Hartree product wavefunctions. VI. Natural orbital CI expansions in nonsinglet cases

The NSO\u27s and NO\u27s have been determined for some wavefunctions for Li, Be1+, B2+, C3+ 2S, and Be 3S wavefunctions containing radial correlation. It is shown how the NO\u27s may be utilized to form rapidly converging CI expansions in general. The role of the NSO\u27s in this problem is discussed. ©1973 The American Institute of Physic

Representation of \u3ci\u3eab initio\u3c/i\u3e energy surfaces by analytic functions

A method for the analytical representation of ab initio energy surface results is described. For a three-atom surface, the potential function is written as a sum of atomic, two-body, and three-body terms. This allows an easy fitting of the whole surface, including the dissociated and united atom limits. The theory is applied to an H3 surface of limited accuracy calculated for these purposes. Comparisons are made, where possible, with more accurate calculations. Extensions to surfaces involving four or more atoms are also discussed

Mental State Attribution and Body Configuration in Women

Body configuration is a sexually dimorphic trait. In humans, men tend to have high shoulder-to-hip ratios. Women in contrast, often have low waist-to-hip ratios (WHR); i.e., narrow waists and broad hips that approximate an hour-glass configuration. Women with low WHR’s are rated as more attractive, healthier, and more fertile. They also tend to have more attractive voices, lose their virginity sooner, and have more sex partners. WHR has also been linked with general cognitive performance. In the present study we expand upon previous research examining the role of WHR in cognition. We hypothesized that more feminine body types, as indexed by a low WHR, would be associated with cognitive measures of the female “brain type,” such as mental state attribution and empathy because both may depend upon the activational effects of estrogens at puberty. We found that women with low WHRs excel at identifying emotional states of other people and show a cognitive style that favors empathizing over systemizing. We suggest this relationship may be a byproduct of greater gluteofemoral fat stores which are high in the essential fatty acids needed to support brain development and cellular functioning. It is interesting to note that our findings suggest lower WHR females, who are more likely to be targeted for dishonest courtship, may be better at identifying disingenuous claims of commitment