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Physics Colloquium Series: Prof. Daniel Fischer
Missouri University of Science and Technology, Department of Physics”Control and Analysis of Atomic Few-Body Systems”
Understanding the dynamics in systems of several interacting particles is one of the key challenges of physics. Such systems generally cannot be described in closed analytical form as soon as more than two particles are involved. This “few-body problem” sets us close limits to accurately predicting a system’s state. Therefore, the advancement of our knowledge of phenomena that emerge due to the complex interplay of several particles requires the joined theoretical and experimental exploration for a wide range of situations.
The fragmentation of atoms due to the interaction with charge projectiles, with photon, or with strong external fields represent an ideal test ground of few-body physics. Here, advanced experimental techniques are available which allow manipulating the parameters of the few-particle quantum state by means of laser radiation. Moreover, sophisticated spectrometers enable us to take snapshots of the systems’ evolvement in momentum space and to analyze the details of its dynamics. In this talk, the recent progress in the understanding of ion-atom collision dynamics will be discussed which is based on new experimental developments that allow controlling and analyzing atomic few-body systems in unprecedented detail.