### Scott Campbell

**Program Year:**1**Academic Institution:**Michigan State University**Field of Study:**Nuclear Physics**Academic Advisor:**Ryan Ringle**Practicum(s):**Practicum Not Yet Completed**Degree(s):**

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.#### Publications

Academic Publications: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. 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, et al. (2023) Precision Mass Measurement of Proton-Dripline Halo Candidate $^{22}$ Al. arXiv preprint arXiv:2312.11366.

Conference Presentations:

Research Poster Presentation: Machine Learning and Deep Neural Networks for Characterizing SIPT FT-ICR Signals, Trapped Charged Particles Conference, Germany, Sept. 2022

Oral Research Presentation: Penning Trap Mass Spectrometry at the LEBIT Facility, Low Energy Community Meeting, Argonne National Lab, USA, Aug. 2022

Oral Research Presentation: Medical Imaging with Electrical Impedance Tomography Part I, Data Science and Image Analysis Conference of the Pacific Northwest, USA, Feb. 2020

Oral Research Presentation: Artifact Filtering in Non-linear Fourier Domain for D-Bar Methods in EIT. Colorado State University Department of Mathematics, USA, Oct. 2019

Research Poster Presentation: Variance Reduction Methods for Implicit Monte Carlo Thermal Transport Problems, XCP Computational Physics Summer Workshop, Los Alamos National Laboratory, USA, Aug. 2019

Oral Research Presentation: Variance Reduction at Scale: Response Function Methods for Implicit Monte Carlo Thermal Transport Problems, Los Alamos National Laboratory XCP Division, USA, Aug. 2019

Research Poster Presentation: Detection and Energy Calculation of Cosmic Ray Particles Using a Solid-State Detector, Gonzaga University Summer Research Program, Gonzaga University, USA, July 2018

#### Awards

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 Presidents 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)