Department of Physics
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Atomic Seminar
High-Precision Single-Ion Penning Trap Mass Spectrometry
Date: Monday, March 2nd
Time: 4:00 pm
Place: 5310 Chamberlin
Speaker: Matthew Redshaw, Florida State University
Abstract: The development of single-ion Penning trap techniques during the 1980s and the refinement of these techniques over the past two decades has enabled atomic mass comparisons with fractional precisions of ~0.1 - 0.01 parts-per-billion. During six years of operation, the Florida State University Penning trap has produced over 20 of the world's most precisely known atomic masses, and two measurements of dipole moments of molecular ions, with application to a wide range of fields including determination of fundamental constants, metrology, neutrino physics, nuclear physics, molecular spectroscopy and molecular structure.

In this talk I will describe the FSU Penning trap system and the unique techniques employed, including phase coherent cyclotron frequency measurement via image charge detection, and the implementation of a technique in which the two ions whose cyclotron frequencies are to be compared are simultaneous confined in the trap.
Host: Mark Saffman
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