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A Miniature EBIT with Ion Extraction for Isolating Highly Charged Ions



Shannon Hoogerheide, Joseph N. Tan


We report on the development of a room-temperature miniature electron beam ion trap (EBIT) for efficient production of charge states with relatively low ionization energies. A unitary Penning trap is modified slightly to provide the magnetic field and electric potential necessary for the production of ions in the EBIT. In addition to radial access for in-EBIT spectroscopy, the highly charged ions can be extracted for isolation at low energy. Currently we have demonstrated the production of helium and neon ions and extracted them to a time-of-flight detector. Planned work would involve the use of a Wien filter to select a single charge state to be isolated in a secondary ion trap for further study. One goal is the production of one-electron ions in high-angular momentum Rydberg states for precision experiments. Optical comb-based spectroscopy of such ions could provide an independent determination of the Rydberg constant, which is sought to help resolve the discrepancy in the proton charge radius measurements.
Journal of Physics: Conference Series


Atomic Physics, Ion trapping, Atomic spectroscopy


Hoogerheide, S. and Tan, J. (2015), A Miniature EBIT with Ion Extraction for Isolating Highly Charged Ions, Journal of Physics: Conference Series, [online], (Accessed May 18, 2024)


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Created May 28, 2015, Updated July 3, 2023