{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,9]],"date-time":"2026-10-09T12:55:53Z","timestamp":1791550553859,"version":"4.3.4"},"reference-count":16,"publisher":"AIP Publishing","issue":"10","license":[{"start":{"date-parts":[[2026,10,9]],"date-time":"2026-10-09T00:00:00Z","timestamp":1791504000000},"content-version":"vor","delay-in-days":8,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/100008902","name":"Los Alamos National Laboratory","doi-asserted-by":"publisher","award":["89233218CNA000001"],"award-info":[{"award-number":["89233218CNA000001"]}],"id":[{"id":"10.13039\/100008902","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2026,10,1]]},"abstract":"<jats:p>Down-scattered neutron imaging (6\u201312\u00a0MeV) at the National Ignition Facility diagnoses cold fuel assembly in inertial confinement fusion experiments. Residual primary neutron signal (afterglow) from scintillator decay must be subtracted from down-scattered measurements. With afterglow correction uncertainty comparable to the signal itself (both at the 1%\u20134% level relative to primary), reconstructions are highly sensitive to correction errors. We examine this sensitivity by perturbing the afterglow correction factor from \u221275% to +75% in 5% increments for shot N250126. Legendre P0 contour analysis at 17%, 50%, 80%, and 90% intensity levels reveals that outer contours (17%, 50%) show &amp;lt;10% variation across the full perturbation range, while inner contours (80%, 90%) exhibit steep sensitivity to over-subtraction, with &amp;gt;40% variation as the correction factor increases. The sensitivity is asymmetric: over-subtraction causes rapid degradation and peak location shifts due to the oblate primary geometry, while under-subtraction produces near-linear changes. For analyses of internal hotspot features, under-subtraction is preferable to over-subtraction to avoid reconstruction artifacts.<\/jats:p>","DOI":"10.1063\/5.0350769","type":"journal-article","created":{"date-parts":[[2026,10,9]],"date-time":"2026-10-09T12:45:17Z","timestamp":1791549917000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":0,"title":["Impact of afterglow correction uncertainty on down-scattered neutron imaging at the National Ignition Facility"],"prefix":"10.1063","volume":"97","author":[{"ORCID":"https:\/\/orcid.org\/0009-0001-9095-9754","authenticated-orcid":false,"given":"A. I.","family":"de Santiago","sequence":"first","affiliation":[{"name":"Los Alamos National Laboratory 1 , Los Alamos, New Mexico 87545, USA"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4416-769X","authenticated-orcid":false,"given":"S. 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