The first is based on setting a more » light output threshold while the second imposes a time-of-flight cutoff. Method: Two different analysis methods were used to study the neutron-neutron correlations with varying energy thresholds. To compare these correlations to simulations combining the Monte Carlo radiation transport code MCNPX with the fission event generator FREYA. Purpose: To measure the neutron-neutron angular correlations from the spontaneous fission of 252Cf and 240Pu oxide samples using a liquid scintillator array capable of pulse-shape discrimination. Such an anisotropy arises because the emitted neutrons are boosted along the direction of the parent fragment. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment Additional Journal Information: Journal Volume: 830 Journal Issue: C Journal ID: ISSN 0168-9002 Publisher: Elsevier Country of Publication: United States Language: English Subject: 46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY 98 NUCLEAR DISARMAMENT, SAFEGUARDS, AND PHYSICAL PROTECTION Fission neutron anisotropy Plutonium Nuclear safeguards = ,īackground: Angular anisotropy has been observed between prompt neutrons emitted during the fission process. of Michigan, Ann Arbor, MI (United States) Sponsoring Org.: USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Nonproliferation OSTI Identifier: 1487063 Alternate Identifier(s): OSTI ID: 1341190 OSTI ID: 1365835 Grant/Contract Number: NA0002534 NE0000393 LA14-FY14-027-PD2J Resource Type: Accepted Manuscript Journal Name: Nuclear Instruments and Methods in Physics Research.
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