Since the processes in dusty plasmas are rather complex, the study of charging individual dust grains within simplified conditions becomes very important. Detailed investigations and characterization of charging processes taking place not only in dusty plasmas but also in dust-rich space plasmas are possible for example in traps where a single dust grain can be captured for a long time and its temporal evolution with respect to surrounding conditions can be continuously recorded.
The specific charge, surface potential, and mass of the observed grain can be determined. The paper shows partial results on secondary emission from lunar dust LHT simulant.