Outlines the prospects of generating coherent x rays using high-power lasers and indentifies problem areas in their development. Indicates possible applications for coherent x rays in the fields of chemistry, biology, and crystallography. (GS)

Discusses expanding user community seeking access to synchrotron radiation sources, properties/sources of synchrotron radiation, permanent-magnet technology and its impact on synchrotron radiation research, factors limiting power, the density of synchrotron radiation, and research results illustrating benefit of higher flux and brightness. Also…

Summarizes information on the properties of synchrotron radiation and describes laboratories in the United States specializing in this science, including facilities at the National Bureau of Standards, University of Wisconsin, Stanford, and Brookhaven. (CS)

Traces the development of quantum field theory over the last 50 years beginning with the research of Paul Dirac. Includes past and current research endeavors of various scientists. (JN)