We describe a configuration for a linear Paul rf ion trap. This trap can store a long string of ions with a small second-order Doppler shift, comparable to that achieved with a single ion in a quadrupole Paul trap. Crystallized strings of trapped ions, as well as more complicated structures, have been observed in the trap. We report an observation of the 40.5-GHz ground-state hyperfine interval of Hg+199 by microwave-optical double-resonance spectroscopy and discuss prospects for a microwave frequency standard based on a trapped string of ions. © 1992 The American Physical Society.
CITATION STYLE
Raizen, M. G., Gilligan, J. M., Bergquist, J. C., Itano, W. M., & Wineland, D. J. (1992). Ionic crystals in a linear Paul trap. Physical Review A, 45(9), 6493–6501. https://doi.org/10.1103/PhysRevA.45.6493
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