Spectroscopic fast neutron transmission imaging in a treaty verification setting

Ogren, K.; Nattress, J.; Jovanovic, I.

doi:10.1063/1.5004698

Title: Spectroscopic fast neutron transmission imaging in a treaty verification setting

Journal Article · Thu Jan 04 00:00:00 EST 2018 · AIP Advances

DOI:https://doi.org/10.1063/1.5004698· OSTI ID:1499138

Ogren, K. ^[1]; Nattress, J. ^[1]; Jovanovic, I. ^[1]

Univ. of Michigan, Ann Arbor, MI (United States)

Measurements of the geometric configuration of objects and their material composition are needed for nuclear treaty verification purposes. We experimentally demonstrate a simple method based on monoenergetic fast neutron transmission to realize crude imaging of the geometric configuration of special nuclear material, confirm its fissionable content, and obtain information on its approximate fissile mass. In the experiment, we used monoenergetic neutrons from D(d, n)3He and T(d, n)4He reactions and a linear array of liquid scintillation detectors to perform spectroscopic neutron imaging of up to 13.7 kg of highly enriched uranium in a spherical geometry. We also show an example of detection of material diversion and confirm the presence of fissionable material based on the measurement of high-energy prompt fission neutrons, including estimating the quantity of material from the comparison of measured and predicted fission neutron emission rate. The combination of crude imaging and fissionable material detection and quantification in a simple approach may be attractive in certain treaty verification scenarios.

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Research Organization:: Univ. of Michigan, Ann Arbor, MI (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: NA0002534

OSTI ID:: 1499138

Alternate ID(s):: OSTI ID: 1415665

Journal Information:: AIP Advances, Vol. 8, Issue 1; ISSN 2158-3226

Publisher:: American Institute of Physics (AIP)Copyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 2 works

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References (16)

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