Evaporative Cooling and Coherent Axial Oscillations of Highly Charged Ions in a Penning Trap
- 7 January 2011
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 106 (1) , 013002
- https://doi.org/10.1103/physrevlett.106.013002
Abstract
Externally, in an electron beam ion trap, generated Ar16+ ions were retrapped in a Penning trap and evaporatively cooled in their axial motion. The cooling was observed by a novel extraction technique based on the excitation of a coherent axial oscillation which yields short ion bunches of well-defined energies. The initial temperature of the ion cloud was decreased by a factor of more than 140 within 1~s, while the phase-space density of the coldest extracted ion pulses was increased by a factor of up to about 9.Keywords
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