Patents

John W. Elmer, Alan T. Teruya, and Dennis W. O'Brien
Modified Faraday Cup
U.S. Patent 5,554,926
September 10, 1996
A rotatable modified Faraday cup incorporating tungsten slit blocks that are machined with an included angle, such as 10 degrees, and face away from the beam. The Faraday cup is used in a computer tomographic technique to measure the current density distribution in an electron beam swept across a narrow slit in the Faraday cup that is rotated in a stepped arrangement such that the beam waveform is recorded at regularly spaced angles by a digitizing storage oscilloscope. The recorded waveform provides the input for the computer tomographic technique.

Richard H. Sawicki
Apparatus for and Method of Correcting for Aberrations in a Light Beam
U.S. Patent 5,557,477
September 17, 1996
A technique that uses two optical elements to correct for aberration in a light beam. The first optical element defines a flat, circular light-reflecting surface having opposite reinforced circumferential edges and a central post and is resiliently distortable, to a limited extent, into different concave and/or convex curvatures, which may be Gaussian-like, about the central axis. The second optical element acts on the first element to adjustably distort the light-reflecting surface into a particular, selected one of the different curvatures depending upon the aberrations to be corrected for and to fixedly maintain the curvature selected.


Richard W. Pekala
Organic Aerogels from the Sol-Gel Polymerization of Phenolic-Furfural Mixtures
U.S. Patent 5,557,477
September 17, 1996
A phenolic-furfural aerogel produced by sol-gel polymerization of phenolic-furfural mixtures. The sol-gel polymerization of a phenolic-furfural mixture in dilute solution leads to a highly cross-linked network that can be supercritically dried to form a high-surface-area-foam. The new organic aerogel may be carbonized by pyrolyzing in an inert atmosphere at 1,050°ree;C to produce a carbon aerogel. These porous materials have cell-pore sizes of less than 1,000 angstroms, density of 0.1 to 1.0 grams per cubic centimeter, and surface area of 350 to 1,000 square meters per gram. Dopants can be included in the aerogel.





Awards

Bruce W. Shore, a physicist in the Laboratory's Laser Programs Directorate, has been named winner of a Humboldt Research Award that will take him to the University of Kaiserslautern in Germany for a year of collaborative research with Professor Klaas Bergmann. The award recognizes the value of Shore's five-year collaboration with Bergmann on the behavior of atoms and molecules exposed to laser radiation. The award was made by the Alexander von Humboldt Foundation, which was established in 1860 to honor the German scientist, explorer, and advocate of international scientific collaboration who gives his name to Humboldt County. Today, the foundation provides opportunities for scholars from the U.S. to work with colleagues in Germany. Shore, a 25-year Livermore employee, specializes in optics and laser physics and is the author of the two-volume text, The Theory of Coherent Atomic Excitation (1990), and of numerous scholarly articles on theoretical atomic physics.

David Seibel, head of the Laboratory's Administrative Information Systems Department, has been honored for his long-term executive leadership with a 1996 Information Management Quality Award from the Department of Energy. Seibel, a Livermore employee for 27 years, was recognized for "providing nearly two decades of continuous vision for the future of business information systems at LLNL." DOE Chief Information Officer Woody Hall presented the award to Seibel at an October 30 ceremony in Denver.


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