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. Characterization and modeling of the cemented sediment surrounding the Iulia Felix glass.
  2. In situ chemical probing of the electrode-electrolyte interface by ToF-SIMS.
  3. In situ molecular imaging of hydrated biofilm in a microfluidic reactor by ToF-SIMS.
  4. Characterization of natural titanomagnetites (Fe3-xTixO4) for studying heterogeneous electron transfer to Tc(VII) in the Hanford subsurface.
  5. Millimeter-Wave Absorption as a Quality Control Tool for M-Type Hexaferrite Nanopowders.
  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