University of California

Lockheed Missiles & Space Company, Inc.

Gary G Fan

Mark H Ellisman

Seiichi Suzuki

Clifford Bueno

Robert A Betz

Jeff Price

A hybrid luminescent device for converting ionizing and penetrating radiation energy such as x-rays, gamma rays, neutrons, ions, electrons, and the like into visible light for imaging applications. The hybrid luminescent device includes a phosphor screen disposed on an entrance face fiber optics scintillator which, in turn, may be removably coupled to a camera or like recording media. The hybrid luminescent device of the present invention is capable of providing enhanced radiation absorption efficiency, higher spatial resolution and enhanced brightness or luminescence output over that which is achievable by the phosphor screen and/or fiber optics scintillator when used separately as an intensifying screen for imaging of ionizing and/or penetrating radiation.

Hybrid luminescent device for imaging of ionizing and penetrating

In the magnetic optical system of a transmission electron microscope (TEM), the increased strength of a second objective lens is used to increase the longitudinal energy dispersion by forming an image at a magnified second back-focal plane. The electric current distribution of other lenses in the microscope is reconfigured to compensate for any offsets introduced by the modified second objective lens. A plurality of deflectors are installed which enable the manipulation of the electron beam electronically between the specimen and the second back-focal plane. The magnified second back-focal plane is projected onto the selected-area aperture, allowing the use of the existing selected-area aperture as an objective aperture to achieve an energy filtering effect which improves the image contrast and resolution.

Enhanced imaging mode for transmission electron microscopy

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San Diego, CA, United States of America

Gary G Fan