Speaker
Description
An ion cloud confined in a Paul trap eventually reaches a Coulomb crystalline state when strongly cooled toward absolute zero. The normalized emittance of the Coulomb crystal can be in the sub-femtometer range. The trap is thus usable as a unique ion source for nano-beam production, though the available beam intensity is limited. This new concept was first discussed nearly 20 years ago and later experimentally demonstrated by several research groups (, **). In this paper, we report on the result of a recent experiment where an attempt was made to extract Ca+ or N2+ ions one by one from a compact linear Paul trap. In addition to the regular extraction scheme based on a string Coulomb crystal, the possibility of using a multi-shell crystalline structure is explored in detail.
Footnotes
- M. Kano et al., J. Phys. Soc. Jpn. 73, 760(2004).
** W. Schnitzler et al., Phys. Rev. Lett. 102, 070501 (2009).
*** K. Izawa et al., J. Phys. Soc. Jpn. 79, 124502 (2010).
| Region represented | Asia |
|---|---|
| Paper preparation format | LaTeX |
