The National Institute for Materials Science (NIMS)
and JEOL, Ltd. have developed a lanthanum hexaboride (LaB6)
nanowire-based field emission gun that is installable on an
aberration-corrected transmission electron microscope (TEM). This
combined unit is able to perform atomic resolution observation at
an energy resolution of 0.2 eV—the highest resolution ever recorded
for non-monochromatic electron guns—with a high current stability
of 0.4%.
Development of a high-energy-resolution, lanthanum
hexaboride nanowire-based field emission gun
