Nonlocal hydrodynamic modeling high-rate shear processes in condensed matter

Nonadiabatic dynamics of condensed phase rate processes.

The study of quantum rate processes occurring in condensed phase environments is difficult because of the large number of degrees of freedom involved. Since a full quantum mechanical treatment is not computationally feasible, one is motivated to use mixed quantum-classical dynamical methods. This type of dynamics is applicable when one can single out a few degrees of freedom to be quantum in na...

WUPCOM'15 Winter School on Ultrafast Processes in Condensed Matter

High-Pressure Shock Compression of Condensed Matter

About Deuterium Nuclear Reaction Rate in Condensed Matter

(Paper presented at ICCF7) Abstract The Coulomb barrier penetrability of two approaching nuclei is computed in the frame of the W.K.B approximation. A simple model for describing the screening effect of the Coulomb nuclear barrier by the high electron concentration in condensed matter is presented. The nuclear reaction rate of the hydrogen isotope nuclei, trapped in a metallic lattice is assess...

High Shear Rate Viscometry

We investigate the use of two distinct and complementary approaches to measuring the viscometric properties of low viscosity complex fluids at high shear rates up to 80,000 s−1. Firstly we adapt commercial controlled-stress and controlled-rate rheometers to access elevated shear rates by using parallel plate fixtures with very small gap settings (down to 30 μm). The resulting apparent viscositi...