- Program Year: 1
- Academic Institution: Michigan State University
- Field of Study: Nuclear Physics
- Academic Advisor: Ryan Ringle
Practicum Not Yet Completed
B.S. Physics, and B.S. Mathematics-Computer Science, Gonzaga University, 2021
Summary of Research
My research is in the precise mass determination of rare isotopes. Masses are a critical input for many scientific fields such as nuclear astrophysics, nuclear structure, and fundamental interactions. My group performs these measurements via Penning trap mass spectrometry, capable of the 1 to 0.01 part-per-million resolution required for theorists. Many of the rare and exotic isotopes of the highest impact are produced at rates too low or have half-lives too short to be reliably measured. Penning trap mass spectrometry determines the atomic mass of an (molecular-)ion by measuring its characteristic cyclotron frequency as the ion evolves in a strong magnetic field while confined by the electrostatic potentials of the Penning trap. The ion’s mass is directly proportional to this value, and is ‘calibrated’ by another measurement of a very well-known mass. Each measurement requires on the order of a few hundred ions, and can be applied to half-lives down to 50 ms. I am involved with the development and implementation of two advanced techniques to bring precise measurements of these isotopes further within reach. The recent phase-imaging ion cyclotron resonance technique offers a ~25 fold improvement in resolution, allowing for measurements to be made with significantly fewer ions. I am working to advance hardware and software tools required to extract the required information and overcome systematic effects. I am also leading the continued development of an ‘ultimate sensitivity’ Single Ion Penning Trap (SIPT using the Fourier-transform Ion Cyclotron Resonance technique. SIPT enables measurements of the lowest rate exotic nuclei that may only be produced at a few ions per day. Continued development of the analysis tools include using machine learning and deep neural networks to recover all possible signals.
Campbell, S. E., Bollen, G., Hamaker, A., Kretzer, W., Ringle, R., & Schwarz, S. (2023). Applications of Machine Learning and Neural Networks for FT-ICR Mass Measurements with SIPT. Atoms, 11(10), 126.
M. Alsaker*, B. Bladow, S. E. Campbell, E. M. Kar. (2022) Automated filtering in the nonlinear Fourier domain of systematic artifacts in 2D electrical impedance tomography. Inverse Problems in Imaging, 16(3): 647-671.
S. E. Campbell*, G. Bollen, A. Hamaker, W. Kretzer, R. Ringle, S. Schwarz. (2023) Applications of machine learning and neural networks for FT-ICR mass measurements with SIPT. In Preparation.
Research Poster Presentation Ã¢â‚¬Å“Machine Learning and Deep Neural Networks for Characterizing SIPT FT-ICR Signals,Ã¢â‚¬Â Trapped Charged Particles Conference, Germany, Sept. 2022
Oral Research Presentation Ã¢â‚¬Å“Penning Trap Mass Spectrometry at the LEBIT Facility,Ã¢â‚¬Â Low Energy Community Meeting, Argonne National Lab, USA, Aug. 2022
Oral Research Presentation Ã¢â‚¬Å“Medical Imaging with Electrical Impedance Tomography Part I,Ã¢â‚¬Â Data Science and Image Analysis Conference of the Pacific Northwest, USA, Feb. 2020
Oral Research Presentation Ã¢â‚¬Å“Artifact Filtering in Non-linear Fourier Domain for D-Bar Methods in EIT.Ã¢â‚¬Â Colorado State University Department of Mathematics, USA, Oct. 2019
Research Poster Presentation Ã¢â‚¬Å“Variance Reduction Methods for Implicit Monte Carlo Thermal Transport Problems,Ã¢â‚¬Â XCP Computational Physics Summer Workshop, Los Alamos National Laboratory, USA, Aug. 2019
Oral Research Presentation Ã¢â‚¬Å“Variance Reduction at Scale: Response Function Methods for Implicit Monte Carlo Thermal Transport Problems,Ã¢â‚¬Â Los Alamos National Laboratory XCP Division, USA, Aug. 2019
Research Poster Presentation Ã¢â‚¬Å“Detection and Energy Calculation of Cosmic Ray Particles Using a Solid-State Detector,Ã¢â‚¬Â Gonzaga University Summer Research Program, Gonzaga University, USA, July 2018
Graduated Summa Cum Laude, Gonzaga University (05/21)
Robert and Claire McDonald Work Award Scholarship (08/20)
Inducted to Pi Mu Epsilon Honor Society (01/20)
Inducted to Alpha Sigma Nu Honor Society (02/20)
Gonzaga University PresidentÃ¢â‚¬â„¢s List (12/17, 05/18, 12/18, 05/19, 12/19, 05/20, 12/20, 05/21)
Gonzaga Conference Experience for Undergrads Travel Award (09/19)
Robert and Claire McDonald Work Award Scholarship (08/19)
Gonzaga University Distinguished Mathematics Student (04/18)
Gonzaga Trustee Scholarship (03/17)