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Dr. Allison Harris

University Professor
  • About
  • Education
  • Awards & Honors
  • Selected Research

Biography

Dr. Harris has 3 main areas of research: Computational and Experimental Neuroscience, Atomic Collisions, and Ultrafast Physics. Please see her website for more information.

Current Courses

PHY 390.015 Computational Research In Physics

PHY 390.028 Computational Research In Physics

PHY 499.028 Independent Research in Physics

PHY 499.029 Independent Research in Physics

PHY 217.001 Methods Of Theoretical Physics

PHY 217.002 Methods Of Theoretical Physics

PHY 490.028 Research Development in Physics

PHY 290.015 Research In Physics

PHY 307.001 Seminar In Physics

PHY 407.001 Seminar in Physics

Research Interests & Areas

Migraine is a disease afflicting an estimated 1 billion people worldwide. For migraineurs, the effects can be debilitating and costly. While treatment options are improving, the underlying causes remain elusive. We use Drosophila Melanogaster (fruit flies) as a model to study the mechanisms that lead to migraine initiation. By pairing our experimental studies with computational models, we aim to understand the cellular-level neuronal interactions that initiate the cause migraine.

Atomic collisions provide key insights into one of the most fundamental forces of nature – the Coulomb force. The study of atomic collisions is primarily used to understand the dynamics of charged particle interactions, but is vital to other areas of physics, such as plasma physics, astrophysics, and biophysics. Our research uses state-of-the-art high performance computing techniques, including machine learning, to model collision processes and provide guidance to our experimental colleagues. We are also studying how new matter wave forms, known as twisted electrons, interact with atoms and how these exciting and strange particles differ from their untwisted counterparts.

The goal of ultrafast physics is to understand electronic motion on its natural timescale. This is typically achieved by studying the interaction of atoms and molecules with short, high-intensity laser pulses. We use sculpted laser pulses to study processes such as above threshold ionization, tunneling ionization, and high-order harmonic generation. Sculpted pulses have unique properties that can be used to access physical properties of atoms and molecules that are otherwise inaccessible, such as their rotational properties. They can also be used to create atomic states useful in quantum computing applications. Our goals are to identify new techniques for the study of rotational properties of atoms and to find efficient methods of generating atomic states for use in quantum computers.

Ph D

Missouri University of Science and Technology

BA

Drury University

Outstanding University Researcher

Illinois State University
2025

Researcher to Know

Illinois Science and Technology Coalition
2019

Shaw Teaching Fellowship

Illinois State University
2018

Impact Award

Illinois State University
2017

Outstanding College Researcher

Illinois State University
2017

Outstanding College Teaching Award

Illinois State University
2017

CAS Award for Outstanding Teaching

Illinois State University
2016

Research Initiative Award

Illinois State University
2016

Outstanding New Faculty Member

Henderson State University
2012

Grants and Contracts

RUI: Atomic Physics with a Twist
Allison Lynn Harris.
NSF. August 1 2022 - July 31 2025
RUI: Path Integrals and Charged Particle Dynamics
Allison Lynn Harris.
National Science Foundation. August 1 2019 - July 31 2022
Path Integral Approach to Ion-Impact Collisions
Allison Lynn Harris.
National Science Foundation. August 1 2015 - July 31 2019

Journal Article

A distorted-wave approach to the elastic scattering of twisted electrons on helium
Allison Lynn Harris, Stephan Fritzsche.
J. Phys. B, 58, 095201, (2025)
Spectral Phase Pulse Shaping Reduces Ground State Depletion in High Order Harmonic Generation
James Aygun, C G Buitrago, M F Ciappina, Allison Lynn Harris.
Eur. Phys. J. D, 78, 103, (2024)
Unveiling the electron- induced ionization cross-sections and fragmentation mechanisms of 3,4-dihydro-2H- pyran
T J Wasowicz, M K Jurkowski, Allison Lynn Harris, I Ljubić.
J. Chem. Phys., 161, 064304, (2024)
Projectile coherence effects in twisted electron ionization of helium
Allison Lynn Harris.
Atoms, 11, 79, (2023), 10.3390/atoms11050079
Control of Arrival Time using Non-Gaussian Wave Packets
Torrey Saxton, Allison Lynn Harris.
Phys. Lett. A, 388, 127038, (2021)
Electron Spectra for Twisted Electron Collisions
Alexander Plumadore, Allison Lynn Harris.
J Phys B, 54, 235204, (2021)
Single and Double Scattering Mechanisms in Ionization of Helium by Electron Vortex Projectiles
Allison Lynn Harris.
J. Phys. B, 54, 155203, (2021)
Projectile Transverse Momentum Controls Emission in Electron Vortex Ionization Collisions
Alexander Plumadore, Allison Lynn Harris.
Journal of Physics B: Atomic, Molecular, and Optical Physics, 53, 205205, (2020)
Recovery time of matter Airy beams using the path integral quantum trajectory model
Allison Lynn Harris, T. A. Saxton, Z. G. Temple.
Results in Physics, 13, 102253, (2019), 10.1016/j.rinp.2019.102253
A critical firing rate associated with tonic-to-bursting transitions in synchronized gap-junction coupled neurons
Annabelle Shaffer, Rosangela Follmann, Allison Lynn Harris, Svetlana Postnova, Hans Braun, Rosa, Epaminondas, Jr..
EUROPEAN PHYSICAL JOURNAL-SPECIAL TOPICS, 226 (9), 1939-1951, (2017), 10.1140/epjst/e2017-70024-6
Bifurcation transitions in gap-junction-coupled neurons
Annabelle Shaffer, Allison Lynn Harris, Rosangela Follmann, Rosa, Epaminondas, Jr..
PHYSICAL REVIEW E, 94 (4), (2016), 10.1103/PhysRevE.94.042301
Effect of frozen core approximation in heavy-ion impact ionization of helium
Allison Lynn Harris.
Journal of Physics B: Atomic, Molecular and Optical Physics, 48 (11), 115203, (2015), 10.1088/0953-4075/48/11/115203
Fully differential cross sections for electron-impact excitation-ionization of aligned D 2
E. Ali, Allison Lynn Harris, J. Lower, E. Weigold, C. G. Ning, D. H. Madison.
Physical Review A, 89 (6), (2014), 10.1103/PhysRevA.89.062713
Applications of artificial neural networks to proton-impact ionization double differential cross sections
Allison Lynn Harris, J.A. Darsey.
The European Physical Journal D, 67 (6), (2013), 10.1140/epjd/e2013-40111-9
Comprehensive study of 3-body and 4-body models of single ionization of helium
Allison Lynn Harris, K Morrison.
Journal of Physics B: Atomic, Molecular and Optical Physics, 46 (14), 145202, (2013), 10.1088/0953-4075/46/14/145202
Four-body charge transfer processes in proton–helium collisions
U. Chowdhury, Allison Lynn Harris, J. L. Peacher, D. H. Madison.
Journal of Physics B: Atomic, Molecular and Optical Physics, 45 (3), 035203, (2012), 10.1088/0953-4075/45/3/035203
Post collision interactions in fully differential cross sections for four-body charge transfer processes
U Chowdhury, Allison Lynn Harris, J L Peacher, D H Madison.
Journal of Physics B: Atomic, Molecular and Optical Physics, 45 (17), 175204, (2012), 10.1088/0953-4075/45/17/175204
Indistinguishability in electron-impact excitation-ionization of helium
Allison Lynn Harris, B. Milum, D. H. Madison.
Physical Review A, 84 (5), (2011), 10.1103/PhysRevA.84.052718
Four-body charge transfer processes in heavy particle collisions
Allison Lynn Harris, J L Peacher, M Schulz, D H Madison.
Journal of Physics: Conference Series, 212, 012031, (2010), 10.1088/1742-6596/212/1/012031
Theoretical fully differential cross sections for double-charge-transfer collisions
Allison Lynn Harris, J. L. Peacher, D. H. Madison.
Physical Review A, 82 (2), (2010), 10.1103/PhysRevA.82.022714
Four-body model for transfer excitation
Allison Lynn Harris, J. L. Peacher, D. H. Madison, J. Colgan.
Physical Review A, 80 (6), 062707, (2009), 10.1103/PhysRevA.80.062707
Absolute cross sections for the ionization-excitation of helium by electron impact
S. Bellm, J. Lower, E. Weigold, I. Bray, D. V. Fursa, K. Bartschat, Allison Lynn Harris, D. H. Madison.
Physical Review A, 78 (3), (2008), 10.1103/PhysRevA.78.032710
Projectile interactions in theoretical triple differential cross sections for simultaneous excitation–ionization of helium
Allison Lynn Harris, M Foster, Ciarán Ryan-Anderson, J L Peacher, D H Madison.
Journal of Physics B: Atomic, Molecular and Optical Physics, 41 (13), 135203, (2008), 10.1088/0953-4075/41/13/135203
Effects of the final-state electron-ion interactions on the fully differential cross sections for heavy-particle-impact ionization of helium
Allison Lynn Harris, D. H. Madison, J. L. Peacher, M. Foster, K. Bartschat, H. P. Saha.
Physical Review A, 75 (3), (2007), 10.1103/PhysRevA.75.032718
Ionization and ionization–excitation of helium to the n = 1 – 4 states of He + by electron impact
S. Bellm, J. Lower, K. Bartschat, X. Guan, D. Weflen, M. Foster, Allison Lynn Harris, D. H. Madison.
Physical Review A, 75 (4), (2007), 10.1103/PhysRevA.75.042704
A Data-Driven Machine Learning Approach for Estimating Electron-Molecule Ionization Cross Sections
Allison Lynn Harris, Joshua Nepomuceno.
J. Phys. B, 57, 025201, 10.1088/1361-6455/ad2185

Presentations

Mechanisms of Initiation and Termination of Cortical Spreading Depression in Migraine Disorders
Grace Crowe, Allison Lynn Harris, Wolfgang Stein.
CAURS, Chicago, IL, April 29, 2023
Attosecond Streaking Using Sculpted Laser Pulses
Dany Yaacoub, Allison Lynn Harris.
ISU Research Symposium, Normal, IL, April 14, 2023
Mechanisms of Initiation of Cortical Spreading Depression in Migraine Disorders
Grace Crowe, Wolfgang Stein, Allison Lynn Harris.
ISU Research Symposium, Normal, IL, April 14, 2023