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Technology Commercialization and Partnerships Division

Polarized Pulsed Front-End Beam Source for Electron Microscope (IN-05-118)

Argonne licensing opportunity [Available for Express Licensing]

A method and an electron source are provided for generating polarized electrons for an electron microscope. The electron source includes a photoemissive cathode and a low-power drive laser. The geometry of the photoemissive cathode uses a generally planar emission surface, which is imaged to approximately 1/100 its initial size via electrostatic focusing elements. The virtual emitter, or image spot, then is used as an electron source by a conventional microscope column.