66 citations · 145 across the 14 of their papers we have counts for
15 papers
Photonuclear Neutron Production in OpenMC: Verification Against MCNPX, FLUKA, and a First-Collision Analytical Solution
Lorenzo Loi, Andrea Missaglia, Carolina Introini +4
The modeling of photonuclear reactions is increasingly important for applications involving high-energy photon fields, including accelerator-driven neutron sources, radiation shiel…
Identifying Neutron Sources using Recoil and Time-of-Flight Spectroscopy
David Breitenmoser, Ricardo Lopez, Shaun D. Clarke +1
Neutron-source identification is central to nuclear physics and its applications, from planetary science to nuclear security, yet direct source discrimination from measured neutron…
Multiplicity counting using organic scintillators to distinguish neutron sources: An advanced teaching laboratory
Flynn B. Darby, Michael Y. Hua, Oskari V. Pakari +2
In this advanced instructional laboratory, students explore complex detection systems and nondestructive assay techniques used in the field of nuclear physics. After setting up and…
Correlations between energy and -ray emission in
Nathan P. Giha, Stefano Marin, James A. Baker +15
We study -ray emission following over an incident neutron energy range of MeV. We present the first experimental evidence for po…
Directional-dependence of the event-by-event neutron- multiplicity correlations in Cf(sf)
Stefano Marin, Eoin P. Sansevero, M. Stephan Okar +6
We differentiate the event-by-event n- multiplicity data from \ce{^{252}Cf}(sf) with respect to the energies of the emitted particles as well as their relative angles of emissio…
Generalization of the Maier-Leibniz Doppler-Shift Method for Gamma-Ray Correlations in Fission
Stefano Marin, M. Stephan Okar, Shaun D. Clarke +1
The Maier-Leibniz Doppler-Shift technique is the most popular and accurate technique used in fission experiments to separate the yield of gamma rays from each of the two fission fr…
Structure in the Event-by-Event Energy-Dependent Neutron-Gamma Multiplicity Correlations in (sf)
Stefano Marin, Mustapha Stephan Okar, Eoin P. Sansevero +13
The emission of neutrons and gamma rays by fission fragments reveal important information about the properties of fragments immediately following scission. The initial fragment pro…
On the Feynman-alpha Method for Reflected Fissile Assemblies
Michael Y. Hua, Jesson D. Hutchinson, George E. McKenzie +2
The Feynman-alpha method is a neutron noise technique that is used to estimate the prompt neutron period of fissile assemblies. The method and quantity are of widespread interest i…
Fast Rossi-alpha Measurements of Plutonium using Organic Scintillators
M. Y. Hua, C. A. Bravo, A. T. MacDonald +7
In this work, Rossi-alpha measurements were simultaneously performed with a He-based detection system and an organic scintillator-based detection system. The assembly is 15 kg…
Measured Nondestructive Assay of Np Using Organic Scintillators and Active Neutron Multiplicity Counting
Michael Y. Hua, Thomas A. Plummer, Jesson D. Hutchinson +3
The purpose of nondestructive assay in the context of nuclear safeguards is to precisely verify the declared mass of a sample of nuclear material in a noninhibitive amount of time.…
Event-by-Event Multiplicity Correlations in Cf(sf)
Stefano Marin, Vladimir A. Protopopescu, Ramona Vogt +7
Excited nuclear fragments are emitted during nuclear fission. The de-excitation of these fission fragments takes place as sequential emission of neutrons followed by photons. A cor…
High resolution measurement of tagged two-neutron energy and angle correlations in Cf-252(sf)
P. F. Schuster, M. J. Marcath, S. Marin +9
Background: Spontaneous fission events emit prompt neutrons correlated with one another in emission angle and energy. Purpose: We explore the relationship in energy and angle betwe…
Correlated Prompt Fission Data in Transport Simulations
P. Talou, R. Vogt, J. Randrup +15
Detailed information on the fission process can be inferred from the observation, modeling and theoretical understanding of prompt fission neutron and -ray~observables. Beyond s…
Application of Bayes' theorem for pulse shape discrimination
Mateusz Monterial, Peter Marleau, Shaun Clarke +1
A Bayesian approach is proposed for pulse shape discrimination of photons and neutrons in liquid organic scinitillators. Instead of drawing a decision boundary, each pulse is assig…
Multiplication and Presence of Shielding Material from Time-Correlated Pulse-Height Measurements of Subcritical Plutonium Assemblies
Mateusz Monterial, Peter Marleau, Marc Paff +2
We present the results from the first measurements of the Time-Correlated Pulse-Height (TCPH) distributions from 4.5 kg sphere of -phase weapons-grade plutonium metal in five co…