Beam Dynamics and Internal Cooling of Ions Stored in a Cryogenic Electrostatic 
Ion Beam Trap

Lange, Michael

doi:10.1063/1.4796078

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Beam Dynamics and Internal Cooling of Ions Stored in a Cryogenic Electrostatic Ion Beam Trap

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Lange, Michael
Division Prof. Dr. Klaus Blaum, MPI for Nuclear Physics, Max Planck Society;

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http://dx.doi.org/10.1063/1.4796078
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Citation

Lange, M. (2013). Beam Dynamics and Internal Cooling of Ions Stored in a Cryogenic Electrostatic Ion Beam Trap. American Institute of Physics Conference Proceedings, 1521, 220-229. doi:10.1063/1.4796078.

Cite as: https://hdl.handle.net/11858/00-001M-0000-000E-F98C-D

Abstract

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.