Bonn 2000 – wissenschaftliches Programm
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Q: Quantenoptik
Q 10: Atomoptik II
Q 10.11: Vortrag
Dienstag, 4. April 2000, 17:30–17:45, HS XV
Towards the elusive Efimov state of the 4He3 molecule through a new atom-optical state-selection technique — •T. Köhler2 and G.C. Hegerfeldt1 — 1Institut für Theoretische Physik, Universität Göttingen, Bunsenstraße 9, 37073 Göttingen, Germany — 2Max-Planck-Institut für Strömungsforschung, Bunsenstraße 10, 37073 Göttingen, Germany
Excited states and excitation energies of weakly bound systems (e. g. few-body systems and clusters) are difficult to study experimentally. For this purpose we propose a new and very general atom-optical method which is based on inelastic diffraction from transmission gratings. The technique is applicable to the recently found helium trimer molecule 4He3, allowing for the first time an investigation of the possible existence of an excited trimer state and determination of its excitation energy. This would be of fundamental theoretical importance for the famous Efimov effect.