Non Neutral Plasma Physics Group

Overview

	Measured beam potential of an space charge de-compensated ion beam with and without inserted emittance scanner. Picture was taken from P. Groß, "Untersuchungen zum Emittanzwachstum intensiver Ionenstrahlen bei teilweiser Kompensation der Raumladung", PhD thesis, Universität Frankfurt
The investigation of non-neutral plasmas requires measurements to get information about the properties of the ensemble. These implies an interaction of the system under investigation with instruments and therefore an interception witch might changes the properties of the NNP. This measurement problem seems to be philosophical or relevant for high precision measurement of atomic properties. On the other hand, the collective behaviour of multi particle ensembles is influenced strongly by small disturbances and reacts in time scales of the plasma frequency to it.