Corrections to official ENDF/B Evaluation Releases for SCALE Nuclear Data
USDOE, USDOE, Chris Chapman, Dorothea Wiarda et autres
This report was prepared as an account of work sponsored by an
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Dorothea Wiarda
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157Publications signalées
6119Citations signalées
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Nuclear reactor physics and engineeringNuclear Physics and ApplicationsNuclear Materials and PropertiesNuclear and radioactivity studiesGraphite, nuclear technology, radiation studies
Les publications récentes
Nuclear Data Covariance Libraries for SCALE
Jesse Brown, USDOE, Friederike Bostelmann, Chris Chapman et autres
This report was prepared as an account of work sponsored by an
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0 citations
"EVALUATION OF THE 19F NEUTRON RESONANCE PARAMETERS IN THE NEUTRON ENERGY RANGE FROM THERMAL TO 1 MEV"
Luiz Leal, USDOE, Goran Arbanas, Dorothea Wiarda et autres
This report was prepared as an account of work sponsored by an agency
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0 citations
Application of SAMMY for Non-Destructive Characterization of Irradiated Samples Using Neutron Transmission Measurements at VENUS
USDOE Office of Science (SC), Luiz Leal, Chen Zhang, Lukas Zavorka et autres
This report presents the application of SAMMY (Larson 2008), an R-matrix Bayesian fitting system, for analyzing neutron transmission data to enable non-destructive isotopic identification. Transmission measurements were conducted at the VENUS (Bilheux et al. 2023) beamline of the Spallation Neutron Source (SNS) …
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Porosity in nuclear graphite and its impact on nuclear reactor science and criticality safety applications
Kemal Ramić, Luke Daemen, Travis Greene, Iyad Al-Qasir et autres
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3 citations
Carbon
Continuing Development of the Nuclear Data Processing Code AMPX [Poster]
Jordan McDonnell, Dorothea Wiarda, Jesse Brown, Chris Chapman et autres
The ENDF/B-VIII.1 evaluation library has seen a great growth in the thermal neutron scattering sub-library. The SCALE code system has traditionally approached CE transport by assuming that the CE library on disk represented the fully expanded cumulative probability distributions, conditional on exiting …
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R-matrix analysis of n+natCl reactions up to 1.2 MeV
Marco Pigni, Friederike Bostelmann, Donny Hartanto, Travis Greene et autres
The R-matrix analysis of neutron-induced reactions for two stable chlorine isotopes (35Cl and 37Cl) was performed in the energy range of thermal up to 1.2 MeV. Starting from the repository of the ENDF/B-VIII.0 library and following recent measurement series, this work represents …
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Porosity in Nuclear Graphite and its Impact on Nuclear Reactor Science and Criticality Safety Applications
Kemal Ramić, Luke Daemen, Travis Greene, Iyad Al-Qasir et autres
us, ae, se (code pays fourni par la source)
0 citations
SSRN Electronic Journal
Unresolved Resonance Evaluations
Jesse Brown, Dorothea Wiarda, Marco Pigni
Covariance: 181 Ta(𝑛, 𝛾) Example SAMMY evaluates average resonance parameters † : 𝒂 𝒄 , ෩ 𝑺 𝒄 ,
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0 citations
Advancements in nuclear data evaluations in the unresolved resonance region [Slides]
Marco Pigni, Dorothea Wiarda, Friederike Bostelmann
Minimal updates to current capabilities (SAMMY/AMPX) and to the ENDF format are proposed to include threshold reaction for outgoing charged-particle channels in the URR formalism. If average resonance parameters are reported, probability tables for newly defined reactions channels may be needed, implemented, …
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0 citations
Photonuclear Physics in SCALE
Robert Lefebvre, USDOE National Nuclear Security Administration (NNSA), Jesse Brown, Cihangir Çelik et autres
Radiation shielding modeling involves a wide range of applications, such as power reactors, critical experiments, portable sources, linear accelerators, and fusion systems. Particle energy ranges vary from thermal energies to fast energy spectra. MAVRIC, as the radiation shielding sequence of the SCALE …
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0 citations
Dr. Mark Williams' Three Contributions to Nuclear Data Covariance
LOW-FIDELITY COVARIANCE DATASensitivity/uncertainty (S/U) techniques have become increasingly important in criticality safety analysis.Dr. Mark Williams, a former ORNL staff member now deceased, contributed greatly to promoting their more widespread use.However, there are two aspects that facilitate their use: (1) development of tools …
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OSTI OAI (U.S. Department of Energy Office of Scientific and Technical Information)
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