Fox, J., Kilby, S., Lee, H.K., Alajo, A., & Avachat, A. (2026). Modeling and Characterizing the electron backscatter in a cylindrical anode-based distributed X-ray source. Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment, 1082, 170906.Elsevier. doi: 10.1016/j.nima.2025.170906.
Kilby, S., Graham, J., & Avachat, A. (2025). Modeling and simulation study for the design of the Fuel Interrogation and Examination using Submersible Tomography Analysis Mk II instrument. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1072.Elsevier. doi: 10.1016/j.nima.2024.170155.
Avachat, A.V., Mahmoud, K.H., Leja, A.G., Xu, J.J., Anastasio, M.A., Sivaguru, M., & Di Fulvio, A. (2024). Ortho-positronium lifetime for soft-tissue classification. Sci Rep, 14(1), 21155.Springer Nature. doi: 10.1038/s41598-024-71695-7.
Fox, J., Lee, H.K., Alajo, A.B., & Avachat, A. (2024). Simulation study of electron beam optics for a distributed X-ray source toward stationary CT architecture. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1062.Elsevier. doi: 10.1016/j.nima.2024.169149.
Deshpande, R., Avachat, A., Brooks, F.J., & Anastasio, M.A. (2023). Investigating the robustness of a deep learning-based method for quantitative phase retrieval from propagation-based x-ray phase contrast measurements under laboratory conditions. Phys Med Biol, 68(8).IOP Publishing. doi: 10.1088/1361-6560/acc2aa.
Kilby, S., Fletcher, J., Avachat, A., Jin, Z., Imholte, D., Woolstenhulme, N., Lee, H.K., & Graham, J. (2023). Multi-modal tomographic imaging system for poolside characterization of nuclear test fuels: Design considerations and studies. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1045.Elsevier. doi: 10.1016/j.nima.2022.167553.
Galib, S.M., Bhowmik, P.K., Avachat, A.V., & Lee, H.K. (2021). A comparative study of machine learning methods for automated identification of radioisotopes using NaI gamma-ray spectra. NUCLEAR ENGINEERING AND TECHNOLOGY, 53(12), 4072-4079.Elsevier. doi: 10.1016/j.net.2021.06.020.
Kilby, S., Fletcher, J., Jin, Z., Avachat, A., Imholte, D., Woolstenhulme, N., Lee, H.K., & Graham, J. (2021). Comparison of a semi-analytic variance reduction technique to classical Monte Carlo variance reduction techniques for high aspect ratio pencil beam collimators for emission. NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT, 1001.Elsevier. doi: 10.1016/j.nima.2021.165236.
Avachat, A.V., Tucker, W.W., Giraldo, C.H.C., Pommerenke, D., & Lee, H.K. (2020). Looking Inside a Prototype Compact X-Ray Tube Comprising CNT-Based Cold Cathode and Transmission-Type Anode. Radiat Res, 193(5), 497-504.Radiation Research Society. doi: 10.1667/RR15499.1.
Kilby, S., Jin, Z., Avachat, A., Kanies, B., Woolstenhulme, N., Lee, H.K., & Graham, J. (2020). A source biasing and variance reduction technique for Monte Carlo radiation transport modeling of emission tomography problems (vol 320, pg 37, 2019). JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 324(1), 445-446.Springer Nature. doi: 10.1007/s10967-020-07064-1.
Avachat, A.V., Tucker, W.W., Giraldo, C.H.C., & Lee, H.K. (2019). Particle-In-Cell Simulations of Electron Focusing for a Compact X-Ray Tube Comprising CNT-Based Electron Source and Transmission Type Anode. IEEE TRANSACTIONS ON ELECTRON DEVICES, 66(3), 1525-1532.Institute of Electrical and Electronics Engineers (IEEE). doi: 10.1109/TED.2019.2891352.
Kilby, S., Jin, Z., Avachat, A., Kanies, B., Woolstenhulme, N., Lee, H.K., & Graham, J. (2019). A source biasing and variance reduction technique for Monte Carlo radiation transport modeling of emission tomography problems. JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 320(1), 37-45.Springer Nature. doi: 10.1007/s10967-019-06457-1.
Sinha, V., Avachat, A.V., & Lee, H.K. (2013). Design and development of a neutron/X-ray combined computed tomography system at Missouri S&T. JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 296(2), 799-806.Springer Nature. doi: 10.1007/s10967-012-2062-x.
Grant, E.J., Posada, C.M., Divan, R., Sumant, A.V., Rosenmann, D., Stan, L., Avachat, A., Castano, C.H., & Lee, H.K. (2013). Construction of a ultrananocrystalline diamond-based cold cathode arrays for a flat-panel x-ray source. In Broach, J.T., & Isaacs, J.C. (Eds.). In Proceedings of SPIE--the International Society for Optical Engineering, 8709, (p. 87090u-87090u-9).SPIE, the international society for optics and photonics. doi: 10.1117/12.2015846.