Mainz 2017 – wissenschaftliches Programm
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A: Fachverband Atomphysik
A 26: Poster Session II
A 26.2: Poster
Mittwoch, 8. März 2017, 17:00–19:00, P OG1
A reaction microscope for few-body Rydberg dynamics — •Philipp Geppert, Dominik Arnold, Cihan Sahin, Andreas Müllers, and Herwig Ott — Department of Physics and Research Center OPTIMAS, Technische Universität Kaiserslautern, 67663 Kaiserslautern, Germany
On the basis of our deterministic ion source experiment (see talk of C. Sahin), we are developing a reaction microscope that is inspired by the well-known MOTRIMS technique. For this, a sample of 106 87Rb atoms will be prepared in a crossed dipole trap. Using a 3-level excitation scheme, some atoms can be excited to atomic or molecular Rydberg states and photoionised by a short laser pulse from a high power CO2 laser after a variable evolution time. Following small homogeneous electric fields generated by Wiley-McLaren-type ion optics, the produced ions are subsequently detected by a time and position sensitive micro channel plate detector. By analysing the trajectories of the recoil ions, we aim to measure momentum distributions of Rydberg molecule wave functions. In this context, special focus lies on butterfly and trilobite molecules, which can be addressed efficiently due to the opportunity of exciting Rydberg p- and f-states. As a next step, stroboscopic monitoring of the internal decay of Rydberg molecules as well as measurements regarding forces between pairs of Rydberg atoms will be performed.