Megan Schoenzeit

All Publications

• Titanium alloy response sensitivity to variations in spectral reconstructions of National Ignition Facility xenon line-emission x-ray sources. The Review of scientific instruments Schoenzeit, M., Poole, P. L., Kemp, G. E., Blue, B. E., Hinshelwood, D., Lees, S., Lopez, I., May, M., Moon, S. J., Noble, C., Parrott, M., Porazik, P., Widmann, K., Saunders, A. M. 2026; 97 (5)

  Abstract

  Thermomechanical shock experiments on the National Ignition Facility (NIF) aim to study high strain rate dynamic material response. In such experiments, the NIF laser is used to generate high fluence x-ray emission sources, which irradiate material samples of interest. Under sufficiently high x-ray energy deposition, thermomechanical impulses are generated in the materials. While it is known that the characteristics of x-ray generated impulses vary as a function of incident x-ray spectra, it remains unclear how spectral assumptions and uncertainties in NIF spectral reconstructions affect our interpretation of impulsive loading. In this paper, we simulate the response of a standard titanium alloy baseline sample to synthetic analytically derived and measured NIF xenon line-emission x-ray sources with a radiation hydrodynamics code. We vary the source spectral characteristics based on different source reconstruction techniques to understand the resulting variation in baseline sample response and compare the simulated response with experimental results. We find that the response is highly sensitive to assumptions made about the spectral contents and that knowledge of spectral uncertainties bounds our understanding of the resulting material response. The results of this effort help to extend our ability to use baseline material samples to extract quantitative properties from x-ray experiments on the NIF.

  View details for DOI 10.1063/5.0305165

  View details for PubMedID 42089757

• Stoner transition at finite temperature in a two-dimensional isotropic Fermi liquid PHYSICAL REVIEW B Mayrhofer, R., Schoenzeit, M., V. Chubukov, A. 2025; 112 (16)

  View details for DOI 10.1103/ljrl-dg2n

  View details for Web of Science ID 001612752800003

• Non-Bloch Dirac points and phase diagram in the stacked non-Hermitian Su-Schrieffer-Heeger model PHYSICAL REVIEW B Schoenzeit, M., Shu, C., Zhang, K., Sun, K. 2025; 111 (24)

  View details for DOI 10.1103/rrxt-s2jp

  View details for Web of Science ID 001511506400007

• Experimental studies and modeling of temporal evolution of chain formation in magnetorheological fluids JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS Schoenzeit, M., Lehtola, K., Schoenzeit, L., Dahlberg, E. 2025; 615

  View details for DOI 10.1016/j.jmmm.2024.172747

  View details for Web of Science ID 001398933900001