Hydrogen-antihydrogen interactions at low energies

The main cause of loss of trapped AH is due to collisions with H-2 and He. As a first step towards treating these reactions we are studying the intera ction of AH with H. We have carried out variational calculations to determi ne an upper bound to the smallest internuclear distance at which the light particles are still bound to the nuclei. We are currently in the process of taking into account the motion of the nuclei. This will enable us to calcu late cross-sections for low energy H-AH scattering.