Publications (5)
An Online Dynamic Amplitude-Correcting Gradient Estimation Technique to Align X-ray Focusing Optics
Sean Breckling, Leora E. Dresselhaus-Marais, Eric Machorro +15
High-brightness X-ray pulses, as generated at synchrotrons and X-ray free electron lasers (XFEL), are used in a variety of scientific experiments. Many experimental testbeds requir…
Methods to Quantify Dislocation Behavior with Dark-field X-ray Microscopy Timescans of Single-Crystal Aluminum
Arnulfo Gonzalez, Marylesa Howard, Sean Breckling +1
Crystal defects play a large role in how materials respond to their surroundings, yet there are many uncertainties in how extended defects form, move, and interact deep beneath a m…
Single-View Tomographic Reconstruction Using Learned Primal Dual
Sean Breckling, Matthew Swan, Keith D. Tan +6
The Learned Primal Dual (LPD) method has shown promising results in various tomographic reconstruction modalities, particularly under challenging acquisition restrictions such as l…
Simultaneous Bright- and Dark-Field X-ray Microscopy at X-ray Free Electron Lasers
Leora E. Dresselhaus-Marais, Bernard Kozioziemski, Theodor S. Holstad +40
The structures, strain fields, and defect distributions in solid materials underlie the mechanical and physical properties across numerous applications. Many modern microstructural…
Box-Constrained Minimization in Single-View Tomographic Reconstruction
Sean Breckling, Malena I. Español, Victoria Uribe +3
We present a note on the implementation and efficacy of a box-constrained regularization in numerical optimization approaches to performing tomographic reconstruction fro…