Search Results - "Rising, M. E."

Correlated prompt fission data in transport simulations by Talou, P., Vogt, R., Randrup, J., Rising, M. E., Pozzi, S. A., Verbeke, J., Andrews, M. T., Clarke, S. D., Jaffke, P., Jandel, M., Kawano, T., Marcath, M. J., Meierbachtol, K., Nakae, L., Rusev, G., Sood, A., Stetcu, I., Walker, C.

“… Detailed information on the fission process can be inferred from the observation, modeling and theoretical understanding of prompt fission neutron and γ -ray…”

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Evaluation and Uncertainty Quantification of Prompt Fission Neutron Spectra of Uranium and Plutonium Isotopes by Rising, M. E., Talou, P., Kawano, T., Prinja, A. K.

“…The prompt fission neutron spectra (PFNS) of the low-incident-energy neutron-induced fission reactions n + 229-238 U and n + 235-242 Pu have been…”

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Data Assimilation using Non-invasive Monte Carlo Sensitivity Analysis of Reactor Kinetics Parameters by Kleedtke, N., Hutchinson, J., Cutler, T., Michaud, I., Rising, M.E., Hua, M., Alwin, J., Grosskopf, M.J., Vander Wiel, S., Neudecker, D., Thompson, N.

“…Accurately predicting the criticality of an experiment before interacting with the experimental components is very important for criticality safety. Radiation…”

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EUCLID: A New Approach to Constrain Nuclear Data via Optimized Validation Experiments using Machine Learning by Hutchinson, J., Alwin, J., Clark, A.R., Cutler, T., Grosskopf, M.J., Haeck, W., Herman, M.W., Kleedtke, N., Lamproe, J., Little, R.C., Michaud, I.J., Neudecker, D., Rising, M.E., Smith, T., Thompson, N., Vander Wiel, S., Wynne, N.

“…Compensating errors between several nuclear data observables in a library can adversely impact application simulations. The EUCLID project (Experiments…”

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Uncovering Where Compensating Errors Could Hide in ENDF/B-VIII.0 by Neudecker, D., Alwin, J., Clark, A.R., Cutler, T., Gibson, N., Grosskopf, M.J., Haeck, W., Herman, M.W., Hutchinson, J., Kleedtke, N., Lamproe, J., Little, R.C., Michaud, I.J., Rising, M.E., Smith, T., Thompson, N., Vander Wiel, S.

“…Unconstrained physics spaces between two or more nuclear data observables in a library occur when their values can be simultaneously adjusted without violating…”

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Prompt Fission Neutron Spectrum Uncertainty Propagation Using Polynomial Chaos Expansion by Rising, M. E., Prinja, A. K., Talou, P.

“…The polynomial chaos expansion-stochastic collocation method (PCE-SCM) is demonstrated to be a computationally efficient approach for propagating nuclear data…”

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Characterizing scintillator detector response for correlated fission experiments with MCNP and associated packages by Andrews, M.T., Rising, M.E., Meierbachtol, K., Talou, P., Sood, A., Bates, C.R., McKigney, E.A., Solomon, C.J.

“…When multiple neutrons are emitted in a fission event they are correlated in both energy and their relative angle, which may impact the design of safeguards…”

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The 235U prompt fission neutron spectrum measured by the Chi-Nu project at LANSCE by Gomez, JA, Devlin, M, Haight, R C, O'Donnell, J M, Lee, HY, Mosby, S M, Taddeucci, T N, Kelly, K J, Fotiades, N, Neudecker, D, White, M C, Talou, P, Rising, ME, Solomon, C J, Wu, CY, Bucher, B, Buckner, M Q, Henderson, R A

“…The Chi-Nu experiment aims to accurately measure the prompt fission neutron spectrum for the major actinides. At the Los Alamos Neutron Science Center…”

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Fission fragment decay simulations with the CGMF code by Talou, P., Stetcu, I., Jaffke, P., Rising, M.E., Lovell, A.E., Kawano, T.

“…The CGMF code implements the Hauser-Feshbach statistical nuclear reaction model to follow the de-excitation of fission fragments by successive emissions of…”

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Fission Fragment Decay Simulations with the CGMF Code by Talou, P, Stetcu, I, Jaffke, P, Rising, M E, Lovell, A E, Kawano, T

“…The CGMF code implements the Hauser-Feshbach statistical nuclear reaction model to follow the de-excitation of fission fragments by successive emissions of…”

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Thoughts on Sensitivity Analysis and Uncertainty Propagation Methods with Respect to the Prompt Fission Neutron Spectrum Impact on Critical Assemblies by Rising, M.E.

“…The prompt fission neutron spectrum (PFNS) uncertainties in the n+239Pu fission reaction are used to study the impact on several fast critical assemblies…”

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Enhancing nuclear data validation analysis by using machine learning by Neudecker, D., Grosskopf, M., Herman, M., Haeck, W., Grechanuk, P., Vander Wiel, S., Rising, M.E., Kahler, A.C., Sly, N., Talou, P.

“…We demonstrate how machine learning (ML) techniques can be used as an auxiliary tool for nuclear data validation analysis. The output of the ML analysis can…”

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The Need for Precise and Well-documented Experimental Data on Prompt Fission Neutron Spectra from Neutron-induced Fission of {sup 239}Pu by Neudecker, D., Taddeucci, T. N., Haight, R. C., Lee, H. Y., White, M. C., Rising, M. E.

“…The spectrum of neutrons emitted promptly after {sup 239}Pu(n,f)—a so-called prompt fission neutron spectrum (PFNS)—is a quantity of high interest, for…”

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Correlated Prompt Fission Data in Transport Simulations by Talou, P, Vogt, R, Randrup, J, Rising, M E, Pozzi, S A, Verbeke, J, Andrews, M T, Clarke, S D, Jaffke, P, Jandel, M, Kawano, T, Marcath, M J, Meierbachtol, K, Nakae, L, Rusev, G, Sood, A, Stetcu, I, Walker, C

“…Detailed information on the fission process can be inferred from the observation, modeling and theoretical understanding of prompt fission neutron and…”

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Characterizing scintillator detector response for correlated fission experiments with MCNP and associated packages by Andrews, M. T., Rising, M. E., Meierbachtol, K., Talou, P., Sood, A., Bates, C. R., McKigney, E. A., Solomon, C. J.

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Evaluation of the 239 Pu prompt fission neutron spectrum induced by neutrons of 500 keV and associated covariances by Neudecker, D., Talou, P., Kawano, T., Smith, D. L., Capote, R., Rising, M. E., Kahler, A. C.

“…We present evaluations of the prompt fission neutron spectrum (PFNS) of (PU)-P-239 induced by 500 keV neutrons, and associated covariances. In a previous…”
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Evaluation of the 239Pu prompt fission neutron spectrum induced by neutrons of 500 keV and associated covariances by Neudecker, D., Talou, P., Kawano, T., Smith, D.L., Capote, R., Rising, M.E., Kahler, A.C.

“…We present evaluations of the prompt fission neutron spectrum (PFNS) of ²³⁹Pu induced by 500 keV neutrons, and associated covariances. In a previous evaluation…”

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Correlated prompt fission data in transport simulations by Talou, P., Vogt, R., Randrup, J., Rising, M. E., Pozzi, S. A., Verbeke, J., Andrews, M. T., Clarke, S. D., Jaffke, P., Jandel, M., Kawano, T., Marcath, M. J., Meierbachtol, K., Nakae, L., Rusev, G., Sood, A., Stetcu, I., Walker, C.

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Multiple-scattering Corrections to Measurements of the Prompt Fission Neutron Spectrum by Taddeucci, T.N., Haight, R.C., Lee, H.Y., Neudecker, D., O'Donnell, J.M., White, M.C., Perdue, B.A., Devlin, M., Fotiadis, N., Ullmann, J.L., Nelson, R.O., Bredeweg, T.A., Rising, M.E., Sjue, S.K., Wender, S.A., Wu, C.Y., Henderson, R.

“…The Chi-Nu project, conducted jointly by LANL and LLNL, aims to measure the shape of the prompt fission neutron spectrum (PFNS) for fission of 239Pu induced by…”

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Understanding the impact of nuclear-data covariances on various integral responses using adjustment by Neudecker, D., Grosskopf, M.J., Alwin, J., Cutler, T., Frankle, S., Gibson, N., Haeck, W., Herman, M.W., Hutchinson, J., Kleedtke, N., Michaud, I.J., Rising, M.E., Smith, T., Thompson, N., Vander Wiel, S.

“…The EUCLID (Experiments Underpinned by Computational Learning for Improvements in Nuclear Data) project created a library of sensitivities for nine different…”

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