Ionic-configuration-interaction effects on Xe5s-subshell photoionization processes

Ionic shell and subshell structures in aluminum and gold nanocontacts.

Conductance histograms of aluminum and gold nanocontact rupture are studied experimentally and simulated using embedded atom potentials to assess the interplay between electronic and structural properties at room temperature. Our results reveal a crossover from quantized conductance structures to crystalline faceting or geometric shell/subshell structures at 300 K. The absence of electronic she...

Relative photoionization and photodetachment cross sections for particular fine-structure transitions with application to Cl 3s-subshell photoionization.

Effects of Configuration Interaction on Intensities and Phase Shifts

One of the enduring goals of scientific work at the National Institute of Standards and Technology (NIST) has been the expression of measurements in terms related directly to natural phenomena of an invariant and absolute character. For example, the unit of time, the second, is now defined as exactly 9,192, 631, 770 periods of oscillation of the radiation associated with a specified quantum tra...

Some Thought on Configuration Processes

For example, for problem of building a software system from modules, the components are a modules; the ports are the variables which need values or provide values; the constraints are descriptions of the number and types of values needed, or constraints about the compatibility of one module with another; and the description of the desired configuration is the user’s description of what the soft...

Effects of Photoionization on Galaxy Formation

We investigate the e ects of the observed UV background radiation on galaxy formation. Photoionization by UV radiation decreases the cooling rate of the gas in halos, so that objects with only large density contrasts can self-shield against the background radiation, thereby allowing the shielded neutral cores to cool and form stars. In the context of the CDM model, we use the criterion that sel...