The shielded CAMECA SX100R electron probe microanalyzer (EPMA) is an electron beam instrument used to measure the chemical composition of solid specimens on a micrometer scale. Like a scanning electron microscope (SEM), the EPMA is capable of collecting electron images of specimens; however, whereas the SEM is optimized for image collection, the EPMA is optimized for the collection of quantitative chemical compositional data. With proper standards, the EPMA can quantify elements from B to Cm. This particular instrument, a Cameca SX100R, is shielded for radioactive samples up to 3 Ci of 137Cs. It is equipped with four wavelength dispersive spectrometers and uses a probe for EPMA as its quantitative software package.
It is currently being used to study the distribution of fission products in metallic and TRISO-type fuels.
Shielded for radioactive samples up to 3 Ci of 137Cs