Extreme Quantum Mechanics: Halo and Efimov States in Atomic Helium Clusters
by Reinhard Dörner (Goethe Universität, Frankfurt)
at GSI Main Lecture Hall ( SB1 1.120 )
Two and three helium atoms form very unusual and extreme quantum systems. Their typical extent is ten to hundred times larger than the radius of atoms. The wave function lives almost completely in the classically forbidden tunneling region and the binding energy of these systems is about 8 orders of magnitude smaller than that of a normal molecule. We will show how coincidence detection of charged fragments can be used to image the wave functions of these helium quantum giants and will show the first experimental images of an Efimov state.