Accession Number : AD1030998


Title :   Modeling of Plutonium Ionization Probabilities for Use in Nuclear Forensic Analysis by Resonance Ionization Mass Spectrometry


Descriptive Note : Technical Report


Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA MONTEREY United States


Personal Author(s) : Hutchinson,Steven F


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/1030998.pdf


Report Date : 01 Dec 2016


Pagination or Media Count : 61


Abstract : Recent advancements in nuclear forensics have enabled the use of lasers via resonance ionization mass spectrometry (RIMS) to determine the isotopic composition ratios of U-235 and U-238. These technological advancements aid the field of nuclear forensics by establishing a known database and modeling approach for quantifying uranium isotope ionization probabilities. In order to further enhance the data and modeling capability necessary for nuclear forensics, numerical simulations must be analyzed and compared to experimental results conducted at Lawrence Livermore National Laboratory (LLNL). This research extends previous RIMS data simulation analysis conducted at Naval Postgraduate School (NPS) and LLNL. The modeling framework collaborates with the experimental data to empirically derive the ionization cross sections for plutonium, furthering the confidence in the use of RIMS for nuclear forensic analysis. By implementing the experimental data into the modeling framework, we are able to provide the Department of Defense a more rapid nuclear forensics process.


Descriptors :   fissionable materials , plutonium , uranium , mass spectrometry , Ionization


Subject Categories : Isotopes


Distribution Statement : APPROVED FOR PUBLIC RELEASE