2010•Chinese Physics LettersRequires access
Kinetic Energy of Trapped Ions Cooled by Buffer Gas
Chen Liang, Lei She, Jiaomei Li, Kelin Gao
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Abstract
The average kinetic energy of 40 Ca + ions is measured by the method of evaporating ions in an rf ion trap. The kinetic energy of the ion 40 Ca + varies from 0.5 eV to 0.2eV with changing buffer gas pressure from 10 −7 mbar to 10 −5 mbar. The Brownian motion model is also introduced to calculate the average kinetic energy of the trapped ions.