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Electron paramagnetic resonance (EPR) spectroscopy is only sensitive to systems containing unpaired electron spins. This makes EPR an indispensable technique for research into the chemical, biochemical and catalytical reactions where these radicals play a vital role. Another related field of application is in photochemistry, where chemical reactions are initiated by light.
After light absorption, the first step of transformation involves a charge separation process, which create both a negatively charged electron and a positively charged hole. Both of these posses unpaired spins and can be detected, characterized and followed by EPR. Furthermore, open-shell transition metals which are at the center of many catalytic reactions can also be studied in detail by EPR spectroscopy.
Ames Laboratory PSDF produces custom powder metals which cannot be purchased from commercial suppliers in small and pilot-scale powder batches for external parties through DOE‘s Strategic Partnership Projects. PSDF also can conduct assessments of powder submitted to the facility.
Particle accelerators use electric fields to speed up and increase the energy of a beam of particles. These particles are steered and focused with magnetic fields. The Low-Energy Accelerator Facility (LEAF) consists of an electron linear accelerator (LINAC) and a Van de Graaff (VDG) electron accelerator. Originally built in 1969, the LINAC recently underwent a significant upgrade to increase the beam power and energy. Researchers in Argonne’s Nuclear Engineering Division use the LEAF for a wide range of applications. This talented team of radiochemists, chemical and nuclear engineers, health physicists and experienced technicians supports multiple programs on behalf of sponsors such as the U.S. Department of Energy’s (DOE’s) National Nuclear Security Administration, U.S. DOE Office of Science Isotope Program and the Defense Threat Reduction Agency.
The Mechanisms Engineering Test Loop (METL) facility, established in 2010, is an intermediate-scale liquid metal experimental facility that provides purified R-grade sodium to various experimental test vessels to test components that are required to operate in a prototypical advanced reactor environment. Experiments conducted in METL significantly assist the development of advanced reactors.
Targets can be produced by wet chemical methods, molecular deposition, mechanical rolling and pressing. The laboratory is equipped with a split glovebox for handling actinides, a HEPA-filtered hood for working with metal powders, and several chemical fume hoods for working on various processing/production methods.