The Nonproliferation Stewardship Program
Explore the source record for details and available documents.
Miller, Michael↗
Engineering topics
Dion, Heather
Publications and source records attributed to Dion, Heather.
New determination of the 229 Th half-life
A new determination of the 229 Th half-life was made based on measurements of the 229 Th massic activity of a high-purity solution for which the 229 Th molality had previously been measured. The 229 Th massic activity was measured by direct comparison with SRM 4328C using 4παβ liquid scintillation counting, NaI counting, and standard addition liquid scintillation counting. The 229Th massic activity was confirmed by isotope dilution alpha spectrometry measurements. The 229 Th half-life calculated from the activity measurements is (7825 ± 87) years (k = 2).
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CH↗
Leveraging existing information for use in a National Nuclear Forensics Library (NNFL)
A National Nuclear Forensics Library (NNFL) assists a State to assess whether nuclear material encountered out of regulatory control is of domestic or international origin. And by leveraging nuclear material registries, nuclear enterprise records, and safeguards accountancy information, as well as existing domestic technical capability and subject-matter domain expertise, states can better assess the effort required for setting up an NNFL. For states who are largely recipients of nuclear and radiological materials and have no internal production capabilities may create an NNFL that relies on existing information rather than carry out advanced analyses on domestic materials.
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS↗