The results of a program designed to develop a laser heated plasma sample for atomic physics studies in the 30 to 100 eV range of electron temperature and the 3 x 10/sup 17/ to 10/sup 18/ cm/sup -3/ range in electron density are presented. The approach used was discussed in detail in Mathematical Sciences Northwest, Inc., (MSNW) Proposal 1660, that is, the laser breakdown mode of heating in a slow solenoid. An extensive rework of the plasma sample facility was done in order to use this mode of heating. Specifically, a new solenoid magnet was constructed to allow higher field operation and the plasma chamber was modified to allow the use of puff filling orifices and small bore tube liners. The vacuum system and focussing optics were changed to allow the use of an on-axis Cassagranian system capable of focussing the laser radiation to a nearly diffraction limited spot as is necessary when heating through a small aperture. The 10 liter CO/sub 2/ laser optics were charged to an unstable oscillator configuration and additional windows were provided into the optical cavity for alignment purposes.

The JPL life testing program for solar cell arrays is described. The testing sites include one at JPL, one at Table Mountain in the San Bernardino Mountains, one in the desert at Goldstone near Barstow, California, and one at the Coast Guard Facility at Point Vicente on the Palos Verdes Peninsula. The test stands and data acquisition systems are described, and test results are presented and discussed. (WHK)

In high explosives machining the three major concerns are safety, reliability, and ease of operation. With these three concerns as our main goals, LLL's EE and ME departments worked together to modify a LeBlond precision lathe for high explosives machining. The result is a unique, remote-controlled lathe which has extensive mechanical and electronics modifications. The lathe has been operating safely and successfully at Site 300's HE Test Facility since April 1978.

Activities in programs to conduct polymer-waterflood studies are reported. During the period a study was conducted of the Burbank-Bartlesville sand reservoir, located in the north half of the Stanley Stringer Field, Osage County, Oklahoma. Progress in the overall program is summarized in a chart. (JRD)

The Lawrence Livermore Laboratory is currently constructing a new linear induction accelerator with a higher beam current than the Astron accelerator. The new accelerator, called the Experimental Test Accelerator (ETA) will be a 5-MeV, 10-kA accelerator with a pulse width of 50-ns. Like the Astron, the principle of magnetic induction is used to obtain a linear accelerator. The modular accelerating cavities form essentially a 1:1 transformer and the change in flux in the ferrite core induces an axial electric field for the acceleration of electrons. Since the total energy storage for the ETA is much greater than the requirement for Astron, the power system, the capacitor bank and the modulator charging system all had to be modified to provide an overall regulation of .1%. This strict regulation of the charging voltage is necessary for pulse-to-pulse repeatability.

Solar cells fabricated from HEM cast silicon have yielded up to 15% conversion efficiencies. This has been achieved in spite of using unpurified graphite parts in the HEM furnace and without optimization of material or cell processing parameters. Molybdenum retainers have prevented SiC formation and reduced carbon content by 50%. The oxygen content of vacuum cast HEM silicon is lower than typical Czochralski grown silicon. Impregnation of 45 ..mu..m diamonds into 7.5 ..mu..m copper sheath has shown distortion of the copper layer. However, 12.5 ..mu..m and 15 ..mu..m copper sheath can be impregnated with 45 ..mu..m diamonds to a high concentration. Electroless nickel plating of wires impregnated only in the cutting edge has shown nickel concentration around the diamonds. This has the possibility of reducing kerf. The high speed slicer fabricated can achieve higher speed and longer stroke with vibration isolation. This machine will be used for slicing 3'' and 4'' diameter workpieces.

The feasibility of implementing bias-humidity development testing to determine if field-like failure modes would result is demonstrated. Variables resulting in degradation were separated so causative variables could be identified. The studies were done on silicon solar cell modules from different manufacturers. Following each of the ten-day bias-humidity tests, the modules were examined, photographed, and tested. Limited bias-related changes were observed. (LEW)

This report reviews the physical basis for the theory of enhanced transport in non-axisymmetric tandem mirror systems recently published by Ryutov, et al. For TMX and thermal ions in a reactor, the radial loss is estimated to be somewhat less than the axial loss; energetic alphas in reactors are susceptible to rapid loss. A number of variations of current magnetic field designs are suggested for reducing this transport.

Methods of producing low-cost silicon sheet for solar cells are under active development. In the crystal-growing processes a refractory crucible is required to hold the molten silicon, while in the ribbon processes an additional refractory shaping die is needed to enable silicon ribbon to be produced. In several ribbon processes the high-temperature materials are a limiting factor in the development of the technique. The objective of this study is to develop and evaluate refractory die and container materials. Mass spectrometric studies of molten silicon in contact with silicon nitride and silicon carbide show that the vapor pressure of silicon is lower over these materials than over the oxides (beryllium oxide, alumina, and silica) studied previously. Measured carbon and nitrogen contents are 6.4 x 10/sup 19/ atoms/cm/sup 3/ and 3.3 x 10/sup 18/ atoms/cm/sup 3/, respectively. The fabrication of O' and ..beta..' Sialons was found to be strongly dependent upon the nature of the silicon nitride powder. A modified hot pressing procedure was adopted to allow volatilization of chlorine-containing species from the SN402 grade powder. ..beta..' Sialon of composition X = 1 appears to offer some promise as a candidate die material, but materials containing a higher alumina composition (X = …

This study was initiated in 1957 by the U.S. Public Health, and many facets of this project are reaching final objectives. Many new studies have developed in the course of this study and will continue. The projects supported by The Department of Energy during the past year are of utmost importance and consist of: (a) collection of material from uranium miners known to have cancer of the lung into a tumor registry; (b) completion and publication of the Manual on Pulmonary Cytology; (c) regression study of sputum cytological findings in uranium miners who showed marked atypical squamous cell metaplasia and have quit smoking cigarettes, mining, or both; (d) continuation of sputum collection and collection of lungs from deceased miners; (e) sensory development for localization of carcinoma in situ of the lung; and (f) lung histology program. Since we have examined approximately 80,000 sputum samples the last 21 years in cases that showed normal cytology at the inception of the study and some subsequently developed carcinoma of the lung, we have an accumulation of material that is worthy of study and presentation. In addition, we continue to add new knowledge to the art of diagnostic pulmonary cytology. This is a relatively …

Comparison of the 1978 projections of the Reliability Councils with those made the previous year indicates three major changes in electric utility planning: (1) a reduction in total capacity additions for the 10-year planning period, (2) a significant decrease in nuclear additions, and (3) a shift from oil and gas to coal as a source of primary energy. Nuclear capacity continues to far overshadow fossil-fuel capacity in the unit-size range 1000 MW and up, with the reverse true for unit sizes less than 1000 MW. Although the total 10-year new-unit capacity drops from 326,624 MW (1977 to 1986) to 308,017 (1978 to 1987), new capacity planned that would use coal as a primary energy source increases from 136,763 MW to 146,206 MW. Nuclear capacity, in terms of total new units projected for the two 10-year periods, decreases from 130,532 MW to 116,177 MW, and capacity with oil as the primary source drops from 32,837 MW to 21,072 MW. For 1977 to 1986, no capacity was planned with oil as a primary source and coal as an alternate fuel but for 1978 to 1987, 1220 MW of such capacity is projected. Therefore, the total new capacity projected that could use coal …

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.

This report describes circumstances involved in the alleged 91.2 grams of plutonium released to the 216-Z-19 Ditch from the 231-Z facility. The following areas were reviewed: 231-Z liquid waste data collected by Battelle-Northwest and Rockwell Hanford Operations (Rockwell); the sampling methods used by Battelle and Rockwell; and operating conditions in the 231-Z and 234-5Z Buildings at the time of the alleged release.

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; Multiple elections between the Optional Retirement Program and the Teacher Retirement System.

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; Whether a county may purchase radio equipment through a council of governments.

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; Authority of General Land Office to regulate activites on adjoining lands.

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; Whether a judge who retires before he is 65 is eligible for the additional 10% benefit authorized by article 6228b, ∫ 2(a) for those who retire before age 70.

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; Whether citizens summoned as special police force are subject to requirements of article 4413(29aa).

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: Can article 8, section 1-d “agricultural use” tax treatment by applied to land owned by a partnership?

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: Construction of section 17.99, Texas Education Code.

From Operational Program: This final report includes a general geologic description of the area, including descriptions of the various geologic units and correlates the airborne data to the geologic units as provided by the geologic maps. Also included is a frequency distribution study of the data as a function of the geologic units encountered over the NTMS area including the tie line data.

Abstract: This report presents the results of a study to evaluate the state-of-the-art and determine the feasibility of attaining an extreme weather pollution response capability.

Data collected as part of a hydrogeochemical and stream sediment reconnaissance for the Green Bay quadrangle including field data as well as laboratory data on well, spring, and stream waters, and stream sediments.

Results are reported in a program to design, synthesize, and evaluate polycyclic host organic compounds for their abilities to complex and lipophilize guest metal ions. Work during the reporting period was devoted to synthesis and study of cyclohexametaphenylenes and cyclic phosphine oxides. (JRD)