{"paper":{"title":"Measurement of the normalized $^{238}$U(n,f)/$^{235}$U(n,f) cross section ratio from threshold to 30 MeV with the fission Time Projection Chamber","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["physics.ins-det"],"primary_cat":"nucl-ex","authors_text":"A. B. Laptev, A. C. Tate, B. Manning, B. Seilhan, B. Wendt, C. Brune, C. Hagmann, C. McGrath, D. A. Cebra, D. E. Towell, D. Hensle, D. Higgins, D. L. Duke, D. M. Asner, E. Burgett, E. Guardincerri, F. Tovesson, G. Tatishvili, H. Qu, I. Ferguson, J. A. Magee, J. Baker, J. Bundgaard, J. Deaven, J. Gearhart, J. King, J. L. Klay, J. Ruz, J. S. Barrett, K. T. Schmitt, L. D. Isenhower, L. Montoya, L. Snyder, L. Wood, L. Yao, M. Cunningham, M. Heffner, M. Lynch, M. P. Mendenhall, N. Hertel, N. Kornilov, N. S. Bowden, N. T. Pickle, N. Walsh, R. G. Baker, R. J. Casperson, R. Kudo, R. Meharchand, R. S. Towell, R.T. Thornton, S. Grimes, S. Sangiorgio, S. Sharma, S. Stave, S. Watson, T. Classen, T. Hill, T. N. Massey, U. Greife, U. Hager, V. Geppert-Kleinrath, W. Loveland, W. S. Lynn, W. Younes","submitted_at":"2018-02-23T20:10:19Z","abstract_excerpt":"The normalized $^{238}$U(n,f)/$^{235}$U(n,f) cross section ratio has been measured using the NIFFTE fission Time Projection Chamber from the reaction threshold to $30$~MeV. The fissionTPC is a two-volume MICROMEGAS time projection chamber that allows for full three-dimensional reconstruction of fission-fragment ionization profiles from neutron-induced fission. The measurement was performed at the Los Alamos Neutron Science Center, where the neutron energy is determined from neutron time-of-flight. The $^{238}$U(n,f)/$^{235}$U(n,f) ratio reported here is the first cross section measurement made"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1802.08721","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}