Proposal of an Electrodynamic Trap for Photoemission Measurements on Dust Grains

Abstract. Laboratory simulations of charging dust grains are a way to understanding the role of dust grains in complex plasma in space as well as in technical applications. Our laboratory experiment von dust particles is based on an electrodynamic quadrupole trap in that we are able to hold a single dust particle for a long time (typically tens of hours) and to study effects induced by charging with electrons and ions. However, the geometry of our current quadrupole trap does not allow us to study photoemission. For this reason, we develop a new experimental setup, in which we are going to study charging of dust grains by photoemission and by electron and ion impacts. We present the concept of our experimental set-up and current status of its design.