high-voltage electron microscope


high-voltage electron microscope

[′hī ¦vōl·tij i¦lek‚trän ′mī·krə‚skōp] (electronics) An electron microscope whose accelerating voltage is on the order of 106 volts, as compared with 40-100 kilovolts for an ordinary electron microscope; it has the advantages of increased specimen penetration, reduced specimen damage, better theoretical resolution, and more efficient dark-field operation.