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Measurement of material isotopics and atom number ratio with alpha-particle spectroscopy for the NIFFTE fission Time Projection Chamber actinide target

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arxiv 2106.06063 v2 pith:FXKT2RRX submitted 2021-06-10 nucl-ex physics.ins-det

M. Monterial , K.T. Schmitt , C. Prokop , E. Leal-Cidoncha , M. Anastasiou , N.S. Bowden , J. Bundgaard , R.J. Casperson
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D.A. Cebra T. Classen D.H. Dongwi N. Fotiades J. Gearhart V. Geppert-Kleinrath U. Greife C. Hagmann M. Heffner D. Hensle D. Higgins L.D. Isenhower K. Kazkaz A. Kemnitz J. King J.L. Klay J. Latta W. Loveland J.A. Magee B. Manning M.P. Mendenhall S. Mosby D. Neudecker S. Sangiorgio B. Seilhan L. Snyder F. Tovesson R.S. Towell N. Walsh T.S. Watson L. Yao W. Younes
This is my paper · ORCID
classification nucl-exphysics.ins-det
keywords ratiofissionnumberactinidemeasuredmeasurementtargetalpha-spectroscopy
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We present the results of a measurement of isotopic concentrations and atomic number ratio of a double-sided actinide target with alpha-spectroscopy and mass spectrometry. The double-sided actinide target, with primarily Pu-239 on one side and U-235 on the other, was used in the fission Time Projection Chamber (fissionTPC) for a measurement of the neutron-induced fission cross-section ratio between the two isotopes. The measured atomic number ratio is intended to provide an absolute normalization of the measured fission cross-section ratio. The Pu-239/U-235 atom number ratio was measured with a combination of mass spectrometry and alpha-spectroscopy with a planar silicon detector with uncertainties of less than 1%.

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