James E. Baciak
YOU?
Author Swipe
View article: Characterization of the neutron source term and multiplicity of a spent fuel assembly in support of NSDA safeguards of spent nuclear fuel
Characterization of the neutron source term and multiplicity of a spent fuel assembly in support of NSDA safeguards of spent nuclear fuel Open
The gross neutron signal (GNS) is being considered as part of a fingerprinting or neutron balance approach to safeguards of spent nuclear fuel (SNF). Because the GNS is composed of many derivative components, understanding the time-depende…
View article: 2023 Radiation Detection for Nuclear Security Summer School (Summary Report)
2023 Radiation Detection for Nuclear Security Summer School (Summary Report) Open
The Pacific Northwest National Laboratory (PNNL) hosted the 9th Radiation Detection for Nuclear Security Summer School 20-30 June 2023 in Richland, WA. The school provided students with an understanding of nuclear security challenges faced…
View article: Analytical Sensitivity Analysis of a Spent Nuclear Fuel Cask
Analytical Sensitivity Analysis of a Spent Nuclear Fuel Cask Open
Nuclear science and engineering is a field increasingly dominated by computational studies resulting from increasingly powerful computational tools. As a result, analytical studies, which previously pioneered nuclear engineering, are incre…
View article: Analytic Modeling of a Deep Shielding Problem [PowerPoint]
Analytic Modeling of a Deep Shielding Problem [PowerPoint] Open
This PhD defense presentation includes how the results assessment methodology identifies physics driving behavior in simulated results using comparison with analytic and reduced-fidelity computational models.
View article: Spring 2020 Dissertation Update [Slides]
Spring 2020 Dissertation Update [Slides] Open
An update is provided on the dissertation underway and what has been learned thus far. Work thus far: Developed analytic models for each region in the spent fuel cask – Used to identify and explain physical processes which create features …
View article: Super resolution for root imaging
Super resolution for root imaging Open
Premise High‐resolution cameras are very helpful for plant phenotyping as their images enable tasks such as target vs. background discrimination and the measurement and analysis of fine above‐ground plant attributes. However, the acquisiti…
View article: Radiation Transport Simulation Results Assessment Through Comparison With Reduced Complexity Analytic and Computational Models (LA-UR-20-22342)
Radiation Transport Simulation Results Assessment Through Comparison With Reduced Complexity Analytic and Computational Models (LA-UR-20-22342) Open
In the past when faced with solving a non-tractable problem, scientists would make tremendous efforts to simplify these problems while preserving fundamental physics. Solutions to the simplified models provided insight into the original pr…
View article: Summary Report for the 2019 Radiation Detection for Nuclear Security Summer School
Summary Report for the 2019 Radiation Detection for Nuclear Security Summer School Open
The Pacific Northwest National Laboratory (PNNL) hosted students from across the United States at the 6th Radiation Detection for Nuclear Security Summer School 17-28 June 2019. The summer school provided students with a unique understandi…
View article: Fall 2019 Dissertation Update [Slides]
Fall 2019 Dissertation Update [Slides] Open
slope); Discrepancies between absorption SC's in fuel; Create a test problem to show the effects of the high energy resonances in the fuel region. Future Work: Sensitivity analysis needs to be continued through the cask – The detailed mode…
View article: Fall 2019 Dissertation Update [Slides]
Fall 2019 Dissertation Update [Slides] Open
Summary of Presentation: Motivation - Problem Description; Feature Identification. Discussion of Features - Flat Flux Region Near Cask Centerline; Periodic Depressions of Flux in Fuel Region; Abrupt "Level-Off" Region; Non-exponential Redu…
View article: Summary Report for the Radiation Detection for Nuclear Security Summer School 2018
Summary Report for the Radiation Detection for Nuclear Security Summer School 2018 Open
The Pacific Northwest National Laboratory (PNNL) hosted students from across the United States at the 5th Radiation Detection for Nuclear Security Summer School 18-29 June 2018. The summer school provided students with a unique understandi…
View article: Thin film organic photodetectors for indirect X-ray detection demonstrating low dose rate sensitivity at low voltage operation
Thin film organic photodetectors for indirect X-ray detection demonstrating low dose rate sensitivity at low voltage operation Open
Developments in the field of organic semiconductors have generated organic photodetectors with high quantum efficiency, wide spectral sensitivity, low power consumption, and unique form factors that are flexible and conformable to their su…
View article: BiI<sub>3</sub> Crystals for High Energy Resolution Gamma-Ray Spectroscopy
BiI<sub>3</sub> Crystals for High Energy Resolution Gamma-Ray Spectroscopy Open
BiI3 had been investigated for its unique properties as a layered compound semiconductor for many decades. However, despite the exceptional atomic, physical, and electronic properties of this material, good resolution gamma ray spectra had…
View article: Enhanced gamma ray sensitivity in bismuth triiodide sensors through volumetric defect control
Enhanced gamma ray sensitivity in bismuth triiodide sensors through volumetric defect control Open
Some of the more attractive semiconducting compounds for ambient temperature radiation detector applications are impacted by low charge collection efficiency due to the presence of point and volumetric defects. This has been particularly t…
View article: Computed Tomography of Dry Cask Storage for Used Fuel
Computed Tomography of Dry Cask Storage for Used Fuel Open
The demand for dry cask storage for used nuclear fuel is on the rise due to the continuous operation of currently existing nuclear plants which are reaching or have reached the capacity of their used fuel pools. Dry cask storage allows use…