Research on Quantum Dynamics in Matter

 

We study the atomic collisions of charged or neutral ions in multielectronic targets, and the individual and collective processes involved to compare with the experimental data for ionization cross sections, or stopping and straggling cross sections in gases and solids of interest.

This research include the calculation of probabilities of single and multiple ionization, ionization cross sections in one or in both centers (projectile and target), stopping power per unit path length, and energy loss straggling.

Nowadays we are employing a many-electron model named shellwise local plasma approximation. The multielectronic targets studied are gases such as Ne, Ar, Kr, and Xe, or solids such as Al, Cu, Fe y Zn, or even actually heavy atoms as Au, W, or Pb with about 80 bound electrons, including the 4f subshell with its 14 electrons. This latest group of atoms requires the employment of relativistic wave functions and binding energies.