Yaron Danon
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View article: Thermal Neutron Induced Capture and Fission Gamma-Ray Emission Measurements and Simulation Methods
Thermal Neutron Induced Capture and Fission Gamma-Ray Emission Measurements and Simulation Methods Open
In order to validate evaluated capture gamma-ray cascade data used in coupled neutron-photon transport simulations, measurements of thermal neutron induced capture were performed as a function of neutron time-of-flight (TOF). A large 16-se…
View article: Open issues on scattering kernels of compound nuclear reactors
Open issues on scattering kernels of compound nuclear reactors Open
Scattering kernel models, define the energy change and angular distribution of a scattered neutron. In the keV and fast energy ranges these are often determined by phenomenological concepts or using fits to measurements due to lack of micr…
View article: Measuring and Simulating Neutron Capture <i>γ</i>-Ray Spectra using the RPI <i>γ</i>-Ray Multiplicity Detector
Measuring and Simulating Neutron Capture <i>γ</i>-Ray Spectra using the RPI <i>γ</i>-Ray Multiplicity Detector Open
Accurate modeling of neutron induced capture γ -ray production is essential for many applications such as reactor and shielding calculations, understanding γ -ray heating in critical systems, and non-proliferation efforts. To determine the…
View article: Coherent Interactions of Free Electrons and Matter: Toward Tunable Compact X-ray Sources
Coherent Interactions of Free Electrons and Matter: Toward Tunable Compact X-ray Sources Open
Compact laboratory-scale X-ray sources still rely on the same fundamental principles as in the first X-ray tubes developed more than a century ago. In recent years, significant research and development have focused on large-scale X-ray sou…
View article: Unresolved resonance region cross section measurements and validation [Slides]
Unresolved resonance region cross section measurements and validation [Slides] Open
This presentation discusses the ENDF format and its implication for experimental data. The effect of self-shielding on measured cross sections some call this effect transmission enhancement (to be explained). Additionally discussed: from e…
View article: Recent Nuclear Data Activity at the RPI Gaerttner LINAC Center
Recent Nuclear Data Activity at the RPI Gaerttner LINAC Center Open
The nuclear data group at the RPI Gaerttner LINAC Laboratory uses a 60 MeV pulsed electron LINAC to produce short pulses of neutrons and perform cross section and other nuclear data measurements in a wide energy range from below 1 meV to a…
View article: Overview of Nuclear Data Measurement and Analysis at RP [Slides]
Overview of Nuclear Data Measurement and Analysis at RP [Slides] Open
This presentation details neutron capture in 54Fe along with neutron capture yield and γ-ray cascade spectra measurements. The presentation then follows with thermal neutron die-away measurements and concludes with URR improvement to SAMMY.
View article: Improvements of Nuclear Data Evaluations for Lead Isotopes in Support of Next Generation Lead-Cooled Fast Systems
Improvements of Nuclear Data Evaluations for Lead Isotopes in Support of Next Generation Lead-Cooled Fast Systems Open
The neutron evaluation of the isotopes that comprise natural lead were undertaken as a part of DOE-NEUP Project #19-16739. The goal of the project was to update the neutron cross sections to account for new differential measurements and in…
View article: Deployment of Gaussian Surrogate Model for Ad-Hoc Adjustments to Elastic Scattering Angular Distributions [Slides]
Deployment of Gaussian Surrogate Model for Ad-Hoc Adjustments to Elastic Scattering Angular Distributions [Slides] Open
This presentation is on the deployment of gaussian surrogate model for ad-hoc adjustments to elastic scattering angular distributions. Discussed throughout the presentation is motivation for this lecture. Specifically, the gaussian surroga…
View article: Zirconium Scattering Sensitivity in Neutron Transport Calculations of Multiplying Systems [Slides]
Zirconium Scattering Sensitivity in Neutron Transport Calculations of Multiplying Systems [Slides] Open
This presentation touches on motivation and applications of Zirconium. Performance of evaluated libraries on double and quasi differential experiments is considered. Additionally, the performance of evaluated libraries in select ICSBEP ben…
View article: Validation and Evaluation Uses of Quasi-Differential High-Energy Scattering Data [Slides]
Validation and Evaluation Uses of Quasi-Differential High-Energy Scattering Data [Slides] Open
This presentation covers the validation and evaluation uses of quasi-differential high-energy scattering data. This lecture covers motivation behind this work. The lecture then touches on quasi-differential for evaluation, quasi-differenti…
View article: Quasi-Differential Neutron Scattering Measurements of <sup>181</sup>Ta and Teflon from 1.5 to 20 MeV [Slides]
Quasi-Differential Neutron Scattering Measurements of <sup>181</sup>Ta and Teflon from 1.5 to 20 MeV [Slides] Open
This presentation covers motivation for the Experiments Performed. Secondly, it touches on upgrades to the Experimental Apparatus for Measurements. Thirdly, it presents quasi-Differential Experimental Methodology a) Pulse Shape Discriminat…
View article: High Energy Quasi - Differential Neutron Emission Measurements of <sup>181</sup>Ta and <sup>19</sup>F [Slides]
High Energy Quasi - Differential Neutron Emission Measurements of <sup>181</sup>Ta and <sup>19</sup>F [Slides] Open
This presentation begins with the motivation for performing 181Ta and 19F high energy quasi-differential and neutron emission measurements. It then provides a discussion of significant pulse digitization upgrade. The Quasi-Differential met…
View article: New Measurements to Resolve Discrepancies in Evaluated Model Parameters of <sup>181</sup> Ta
New Measurements to Resolve Discrepancies in Evaluated Model Parameters of <sup>181</sup> Ta Open
To resolve discrepancies in evaluated cross sections among major nuclear data libraries, energy-differential neutron transmission and radiative capture yield of 181Ta were measured from 0.15 to 100 keV using multiple sample thicknesses. Th…
View article: Advancements in Validation of TSLs through Inelastic Neutron Scattering and Transmission Measurements [Slides]
Advancements in Validation of TSLs through Inelastic Neutron Scattering and Transmission Measurements [Slides] Open
This presentation finds that INS measurements are not as variable based on sample composition, because phonon spectra is a properly of the bulk material. Additionally, INS and transmission measurements are and should be the most significan…
View article: Development of Transmission Measurements Capability at VISION Spectrometer [Slides]
Development of Transmission Measurements Capability at VISION Spectrometer [Slides] Open
This presentation covers the development of transmission measurements capability at VISION Spectrometer. Main takeaways include that INS and transmission measurements are and should be the most significant part of TSL validation, as they a…
View article: On Integral Benchmarks for Resolving TSL Conflicts for ENDF/B-VIII.1 Release [Slides]
On Integral Benchmarks for Resolving TSL Conflicts for ENDF/B-VIII.1 Release [Slides] Open
This presentation touches on polystyrene ORNL evaluation in TSL review process for ENDF/B-VIII.1. the presentation found excellent agreement with INS and transmission measurements. Additionally, PS and PE evaluations with different phonon …
View article: ORNL’s Continuing Efforts in Evaluating and Validating TSLs [Slides]
ORNL’s Continuing Efforts in Evaluating and Validating TSLs [Slides] Open
This presentation finds that INS measurements are not as variable based on sample composition, because phonon spectra is a properly of the bulk material. Additionally, INS and transmission measurements are and should be the most significan…
View article: Fast Neutron Evaluations for Advanced Lead Systems [Slides]
Fast Neutron Evaluations for Advanced Lead Systems [Slides] Open
This presentation touches on fast neutron evaluations for advanced lead systems. This lecture covers project goals to evaluate lead (Pb) isotopes with a focus on improving predictive capabilities of fast systems. Additionally, the project …
View article: Neutron Capture and Transmission Measurements and Evaluation of <sup>54</sup>Fe at the RPI LINAC [Slides]
Neutron Capture and Transmission Measurements and Evaluation of <sup>54</sup>Fe at the RPI LINAC [Slides] Open
This presentation covers neutron capture and transmission measurements and evaluation of 54Fe (Iron) at the Rensselaer Polytechnic Insitute (RPI) Linear Accelerator (LINAC). Presentation conclusions find that 54Fe is near its conclusion, c…
View article: Applying Methodology for Evaluating and Validating TSLs to Materials of Interest to NCSP [Slides]
Applying Methodology for Evaluating and Validating TSLs to Materials of Interest to NCSP [Slides] Open
This presentation covers the topic of applying methodology for evaluation validation of TSLs to material of interest to the Nuclear Criticality Safety Program (NCSP). The talk covers recent efforts in validating thermal neutron scattering …
View article: Status of ORNL TSL evaluations [Slides]
Status of ORNL TSL evaluations [Slides] Open
This lecture provides details on the status of ORNL TSL evaluations. Main sections include modeling of concrete, updates of polyethylene evaluation, and initial transmission measurements at Oak Ridge National Labatory (ORNL). The presentat…
View article: NCSP Related Nuclear Data Research at RPI [Slides]
NCSP Related Nuclear Data Research at RPI [Slides] Open
This lecture is on NCSP related nuclear data research at the Rensselaer Polytechnic Institute (RPI). This presentation includes an overview of fiscal year 2022 activity. Additionally, it has a talk on the RPI Nuclear Data (ND) Group Resear…
View article: RPI LINAC refurbishment and upgrade project
RPI LINAC refurbishment and upgrade project Open
The Electron Linear Accelerator at Rensselaer Polytechnic Institute (RPI) was constructed in the late 1950s and started operation in 1961 [1]. The facility was designed and used primarily for measurements of Nuclear Data (ND) with emphasis…
View article: Neutron Capture and Transmission Measurements of <sup>54</sup>Fe at the RPI LINAC
Neutron Capture and Transmission Measurements of <sup>54</sup>Fe at the RPI LINAC Open
54 Fe radiative capture cross section and transmission measurements were conducted at the Rensselaer Polytechnic Institute (RPI) Gaerttner Linear Accelerator (LINAC) Center using an enriched 54 Fe sample in the keV energy region. 54 Fe is …