Bounds on Total Cross Sections in Atom-Atom and Atom-Ion Collisions by Geometric Methods.

Ion-Atom Cold Collisions and Atomic Clocks

Isotope effect in ion-atom collisions

We explain the origin of the unusual large isotopic dependence found in charge-transfer cross sections for H(D,T)+ + Be collisions. We show that this large effect appears in a semiclassical treatment as a consequence of the mass dependence of the charge-transfer transition probabilities, which is due to the variation of the radial velocity in the region where the nonadiabatic transitions take p...

Computer Simulations in Ion-Atom Collisions

Computer simulation has become increasingly important over the last 50 years for modelling and solving different ideas within science. One area in science that computer simulation and its applications is extensively used is Ion-Atom collisions. There are many different aspects to these collisions but this poster will concentrate on measuring the Triply Differential Cross Section (TDCS) for sing...

Evaluation of Multielectron Ionization Cross-Sections in Energetic Ion-Atom Collisions

The use of heavy ions beams with mass of order 100 atomic mass units and energy of order 10 MeV per nucleon has been proposed as a driver for heavy ion fusion. Multi-electron-loss collisions of the beam ions with the background gas atoms result in an increase in the ion charge, which is an unwanted effect for beam propagation through the accelerator and transport regions, and the target chamber...

Spin controlled atom-ion inelastic collisions

The control of ultracold collisions between neutral atoms is an extensive and successful field of study. The tools developed in this field allow for ultracold chemical reactions to be managed using magnetic fields1, light fields2 and spin-state manipulation of the colliding particles3 among other methods. Control of chemical reactions in ultracold atom-ion collisions is a young and growing fiel...