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キーワード:
NON-NEUTRAL PLASMA PHYSICS VIII: 10th International Workshop on Non-Neutral Plasmas. Date: 27–30 August 2012. Location: Greifswald, Germany
要旨:
Experiments on the beam dynamics and on the internal cooling of ions stored in a linear electrostatic ion beam trap operated at < 15K are reported. The extremely low density of residual gas and resulting long storage times afforded by the cold environment have enabled observation of ion bunches maintained by a self-synchronizing mechanism for up to 12 s. The experiment is compared with a model of the bunch decoherence process to illuminate the mechanisms behind both the long persistence of the bunches and their eventual decay into a continuous beam. In a different experiment the change in the vibrational temperature of stored Al4− and Al5− cluster anions via radiative cooling was monitored by using the laser-induced detachment of electrons as a diagnostic.
