Interfacial energy-dispersive spectroscopy profile X-ray resolution measurements in variable pressure SEM. 
A procedure has been developed to follow degradation of energy-dispersive spectroscopy (EDS) X-ray lateral resolution in a variable pressure scanning electron microscope.  This procedure is based on evaluation of the EDS profile shape change for different experimental conditions.  Some parameters affecting the X-ray resolution in high-vacuum mode have been taken into account.  Good agreement between the simulated and experimental EDS profiles shows the reliability of the proposed procedure.  A significant improvement in measurement of the EDS profile interfacial distance (DINT) has been achieved.