Document issued by the Office of the Attorney General of Texas in Austin, Texas, providing an interpretation of Texas law. It provides the opinion of the Texas Attorney General, John L. Hill, regarding a legal question submitted for clarification: Who is required to be licensed as an auctioneer.

It was found that a new type of solid-state detector known as the self-scanning photodiode array can be used to obtain the active readout of data in wavelength-dispersive x-ray spectrometers. The use of this device to recover x-ray spectral data for glass microspheres heated by Lawrence Livermore Laboratory's CYCLOPS laser is reported. The self-scanning photodiode array is a product of the MOS electronics fabrication technology. It consists of an array of semi-discrete diffused junction photodiodes deployed along a line on a silicon chip. The signals generated in the array of diodes are serially-scanned and multiplexed by a scanning circuit built on the chip. The sensitivity and other aspects of the response of the photodiode arrays to low-energy x-rays has been previously reported. The photodiode array was used in conjunction with a flat KAP single-crystal in a series of spectrometry experiments. Of particular interest has been the analysis of the hydrogen-like and helium-like 1s-2p radiations of silicon in the neighborhood of 2 keV.

Absolute spectral measurements were made of electrons escaping from plasmas produced by focusing 5-10 J, 50-100 picosecond, 1.06 ..mu..m laser pulses on 10 ..mu..m thick Parylene disk targets. Nine spectral bands with 3 to 7.5 keV resolution were obtained from 30 to 190 keV using a 90/sup 0/ focusing permanent magnet spectrometer and appropriately positioned silicon electron detectors.

This paper is a discussion of curved crystal x-ray spectrometry of laser induced plasmas for h..nu.. < 4 keV. The plasmas were produced by a short pulse (<200 ps) of 1.06 ..mu.. (neodymium glass) radiation on glass shells on the order of a hundred ..mu..m in diameter and a micron thick. Total absorbed laser energy is of the order of 10 joules and x-radiation .01-.1 joule/sr. The shells were filled with DT gas under compression.

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The Accelerator Division was formed as a separate division of the Lawrence Berkeley Laboratory in 1973. Originally called Physics II Division, it acquired its present title when Andrew M. Sessler was designated Director of the Laboratory in November 1973. Under the leadership of Associate Director Edward J. Lofgren the major activities of the Division comprise operation of the Bevalac, for high-energy and heavy-ion physics, and Advanced Accelerator Research and Development. In addition, there is a small amount of research activity with heavy ions by some members of the Division. Heavy ions were first accelerated in the Bevatron in 1971. In the period under review here a large effort was devoted to construction of the Bevalac project, in which the SuperHILAC is used as a source of energetic heavy ions that are transported down the intervening hillside by a focusing transfer line, and injected into the Bevatron for final acceleration to an energy of 2.6 GeV/nucleon. This facility is unique in the world as a source of relativistic heavy ions and has opened up a new and rich field of research that has commanded worldwide interest. Joint studies with the staff of the Stanford Linear Accelerator Center on a positron-electron colliding …

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