Lattice imaging using plasmon energy-loss electrons in an energy-filtered transmission electron microscope

Lattice images formed by plasmon energy-loss electrons in an energy-filtered transmission electron microscope are compared for different experimental parameters. The image resolution is primarily determined by chromatic aberration which is controlled by the width of the energy selection window. With an energy slit 3 eV in width, the plasmon loss electron image shows the same resolution and contrast as that recorded using the zero-loss electrons in a 300 kV transmission electron microscope equipped with a LaB6 gun. A discussion on the image resolution in reference to the width of the energy window is given.