Office of Science

Electron Microprobe (for radiological samples)

field emission electron microprobe

Housed in EMSL's Radiochemistry Annex, the field emission electron microprobe (EMP) enables chemical analysis and imaging of radionuclides with high spatial resolution in radioactive samples.

The EMP allows non-destructive imaging and compositional elemental analysis of solid-phase materials at high spatial resolution with parts per million sensitivity to aid in analysis of inorganic and radionuclide fate and transport in geochemical systems. Its cathodoluminescence capabilities affords identification of episodic growth in minerals. Initial experiments conducted on natural samples from the Hanford Site provide complementary data to ongoing activities in EMSL's microfluidics and Subsurface Flow and Transport capabilities.

  1. Geochemical and Mineralogical Investigation of Uranium in Multi–element Contaminated, Organic–rich Subsurface Sediment .
  2. Thermodynamic and Kinetic Properties of Intrinsic Defects and Mg Transmutants in 3C-SiC Determined by Density Functional Theory.
  3. Characterization and modeling of the cemented sediment surrounding the Iulia Felix glass.
  4. In situ chemical probing of the electrode-electrolyte interface by ToF-SIMS.
  5. Oxide Shell Reduction and Magnetic Property Changes in Core-Shell Fe Nanoclusters under Ion Irradiation.
  1. Iron-bearing minerals in sediments naturally reduce contaminant levels (Lack of iron)
  2. EMSL’s Chinook provides a new angle for validating pore-scale flow simulations (Go with the flow)
Arey, Bruce | , 509-371-6485
McKinley,James P | , 509-371-6386