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University of StuttgartのRobert Loew先生にRydberg状態の原子とイオンの相互作用についてご講演いただきました。

2024年度　大阪公立大学物理・アトムの会共催　談話会
 
Speaker: Dr. Robert Löw (Deputy Director, 5. Physikalisches Institut, University of Stuttgart)
 
Date: Aug 26(Mon) 11am ~
Place: 大阪公立大学　杉本キャンパス　理学部 第5講義室(F212)
 
Title: AN ION MEETS A RYDBERG ATOM
 
Abstract:
We report on our recent studies on ion-Rydberg atom interactions performed in the ultra-cold quantum regime, using a high-resolution ion microscope. This apparatus provides temporal and spatial resolved images of charged particles with a resolution down to 200nm. The interaction between an ion and a Rydberg atom leads to a rich structure of pair potentials, which can be used to study molecular states as well collisional dynamics. The ion induces a stark splitting in the Rydberg atom, which leads at small distances to a manifold of avoided crossing. If the potential curves feature a local minimum it is possible to photo-associate molecules. With the help of our ion microscope we can take spatially resolved images of the emerging dimer. When kicking one of the atoms it is even possible to observe molecular vibrations in real space. In a second experiment we focused on the collision dynamics of a Rydberg atom and an ion. Due the complexity of the pair states and the large number of avoided crosses we can observe a sequence of diabatic and adiabatic transition during the collision.
 

共催：アトムの会