The boundary perturbation method, suggested by Zhang and (independently) by Chatard-Moulin, Cooper, and their colleagues, is employed to the wakefield calculations for geometrical discontinuities in accelerators. Results are compared with that obtained from the mesh calculations using TBCI. When the perturbation is small and the geometry is suitable for TBCI, agreement is good. Discrepancies observed in other cases are also discussed.

This year major advances have been made in 3 areas: high-lying, doubly-excited resonance states in the H{sup -}, interaction of relativistic H{sup -} ions with thin carbon foils, and multiphoton photodetachment. We plan to pursue these studies further.

Results of image simulations on partially amorphous microlite (Ca{sub 2}Ta{sub 2}O{sub 7}, pyrochlore structure) are presented. Results indicate that HRTEM images are not sensitive to position of amorphous layers within a crystalline matrix. It is also observed that the limit of detection of amorphous material within a crystalline matrix is dependent on total thickness. In thin crystals (<150{Angstrom}), up to 75 vol% crystalline material can give rise to aperiodic images, yet addition of a small amount of crystalline material (80 vol% crystalline) produces a periodic image. Images calculated for isolated spheres of amorphous material distributed within crystalline microlite suggest that isolated domains of amorphization are observable at sample thicknesses less than 3x the diameter of the feature. Image contrast of amorphized domains is enhanced by imaging at defocus settings significantly different than Scherzer focus. This indicate that interpretation of HRTEM images of partially amorphized crystalline materials should be undertaken with caution, and estimates of the volume of damage considered only qualitative.

This report describes the progress in several projects: gas phase substitution reactions of thermal chlorine atoms with tetramethyl metallo-organic compounds; abstraction reactions by thermal chlorine atoms with tetramethyl metallo-organic compounds; gas phase thermal {sup 38}Cl reactions with M(CH{double_bond}CH{sub 2}){sub n}: non-RRKM decomposition of excited radicals (M = Sn, Si, n = 4; M = Sb, n = 3; M = Hg, n = 2); quantitative product identification for reactions of hydroxyl with {sup 14}CS{sub 2}; and statistical analysis of ground-based measurements of total ozone with Dobson spectrometers. The report also contains a research proposal for work from May, 1991 through April, 1992.

In-situ TEM with ion irradiation was used to study the radiation- induced amorphization (metamictization) of naturally occurring silicates: neptunite [Na2KLi(Fe,Mn)2Ti2(SiO3)8], titanite (CaTiSiO5), gadolinite (REE2FeBe2Si2O10), zircon (ZrSiO4), and olivine [(Mg, Fe)2SiO4]. They were irradiated with 1.5 MeV Kr{sup +} ions the Argonne HVEM-Tandem Facility at room temperature with electron diffraction pattern monitored in situ. Critical doses required for amorphization of the electron transparent thickness of neptunite, titanite, gadolinite, zircon, and olivine are 1.7, 2.0, 2.3, 4.8, and 6.0x10{sup 14} ions/cm{sup 2}, respectively. Results show a correlation between amorphization dose and the chemical/structural complexity of these 5 minerals. The most complex, neptunite, becomes amorphous at the lowest critical dose. The critical amorphization dose also increases with the melting point.

Four powdered samples of natural UO{sub 2+x} (uraninite) were annealed in a reducing atmosphere up to 1200 C. Initial unit cell parameters ranged from a{sub o}=0.5463 to 0.5385 nm. Small amounts of UO{sub 2.25} occur in all samples after annealing. Annealing curves show effects of recovery of point defects in the oxygen sublattice, ordering of U{sup 4+} and U{sup 6+}, vacancy migration in the cation sublattice, and second order phase transformations. Difference in annealing behavior of UO{sub 2+x} with x<0.15 as compared to x=0.25 between 400 and 700 C is due to ordering of U{sup 4+} and U{sup 6+}. Density increased after annealing except for one sample in which a large number of cavities (1-2{mu}m) formed. Oxidation and chemical composition have a more dramatic effect on the structural state of natural UO{sub 2+x} than self-irradiation caused by {alpha}-decay damage.

Progress report of the Argonne National Laboratory's Nuclear Technology Programs, including R&D in three areas: applied physical chemistry, separation science and technology, and nuclear waste management.

This paper supplements the Proposed Standard for a Generic Package of Primitive Functions for Ada, '' written by the ISO- IEC/JTC1/SC22/WG9 (Ada) Numerics Rapporteur Group. Based on recommendations made jointly by the ACM SIGAda Numerics Working Group and the Ada-Europe Numerics Working Group, the proposed primitive functions standard is the second of several anticipated secondary standards to address the interrelated issues of portability, efficiency, and robustness of numerical software written in Ada. Its purpose, features, and developmental history are outlined in this commentary.

The only effective way to raise the confidence level of a program significantly is to give a convincing proof of its correctness. But one should not first make the program and then prove its correctness, because then the requirement of providing the proof would only increase the poor programmer's burden. On the contrary: the programmer should let correctness proof and program grow hand in hand.

In the past year the authors have made significant progress in the development of a bacterial based cloning system for large fragments of mammalian DNA. They have completed construction of several recombination deficient bacterial host strains designed to minimize homologous recombination arising with repeats within cloned DNA. Despite the multiple mutations, these strains are viable and grow readily on standard media (LB). One of the chief attractions of a bacterial system is the promise of high transformation efficiencies. The author have pursued two separate strategies with the vector. The first makes use of the cos sites in the vector to package cloned DNA as phage particles for infection. By maintaining the vector as a single copy in the recombination minus host, they believe that the recombination that affects conventional cosmid libraries will be eliminated. They encountered no difficulties in preparing such a ``Fosmid`` (F factor based cosmid) library of human DNA.

The objective of quantitative imaging is to provide pharmacokinetic information for patients that is analogous to that provided by biodistribution studies in mice. Radionuclide images depict the distribution of labeled antibodies in-vivo; thus the amount of radionuclide in a specific organ or site can be estimated by relating the counts detected in a defined region of interest to the total radionuclide content. This pharmacokinetic information can be used to obtain definitive and relevant answers to basic questions of importance for optimizing radioimmunoimaging and radioimmunotherapy and, in addition, can provide a data base from which to calculate the distribution of radiation absorbed doses. The research employs quantitative imaging in evaluating therapies. Quantitative imaging is performed by a certified nuclear medicine technician using the Siemens gamma camera interfaced with the microVAX II. The technician processes the imaging data and obtains pharmacokinetic information from it using programs developed by the authors and others. A large amount of data has been acquired and analyzed on the pharmacokinetics, dosimetry and toxicity of radiolabeled monoclonal therapy. Important dosimetry data on the whole body, marrow and tumor doses are available and all studies are archived so that they can be retrospectively analyzed. Although the radiation absorbed doses …

Summaries of progress made for this period is given for each of the following areas: (1) Task A--Experiment, H1 detector at DESY; (2) Task C--Experiment, AMY detector at KEK; (3) Task D--Experiment, fixed target detectors at Fermilab; (4) Task F--Experiment, PEP detector at SLAC and pixel detector; (5) Task B--Theory, particle physics; and (6) Task E--Theory, particle physics.

BENMOL sorbents have been purported to be reactive with sulfur dioxide (SO{sub 2}) in flue gas at post-air-preheater temperatures (350{degrees}F and below), thus making them possible candidates for dry sorbent injection desulfurization processes. As an initial step to determine the reactivity of these sorbents, microbalance studies were conducted at the Pittsburgh Energy Technology Center (PETC) under the Cooperative Research and Development Agreement (CRADA) program. Initial reactivity rates and total absorption capacities were determined and compared to those obtained with hydrated lime, which is the chosen sorbent for most duct injection flue gas desulfurization processes.

The pCO{sub 2} of the surface ocean is controlled by a combination of physical, chemical, and biological processes. Modeling surface ocean pCO{sub 2} is analogous to modeling sea surface temperature (SST), in that sea surface pCO{sub 2} is affected by fluxes across the air-sea interface and by exchange with deeper water. However, pCO{sub 2} is also affected by chemical and biological processes which have no analog in SST. Seawater pCO{sub 2} is buffered by pH equilibrium reactions between the species CO{sub 2}, HCO{sub 3}-, and CO{sub 3}{sup =}. This effect provides an effective reservoir for CO{sub 2} in seawater that is 10 times larger than it would be for an unbuffered gas. The equilibrium between dissolved and atmospheric CO{sub 2} is sensitive to temperature, tending to higher pCO{sub 2} in warmer water. Biological export of carbon as sinking particles maintains a gradient of pCO{sub 2}, with lower values near the surface (this processes is called the {open_quotes}biological pump{close_quotes}). In most of the ocean, biological activity removes all of the available nutrients from the surface water; that is, the rate of carbon export in these locations is limited by the rate of nutrient supply to the euphotic zone. However, in much …

Unsupported carbide powders with high specific surface area, namely {alpha}-WC (35 m{sup 2}/g, hexagonal), {beta}-WC{sub 0.61} (100 m{sup 2}/g, cubic face centered) and {beta}-WC{sub 0.5} (15 m{sup 2}/g, hexagonal) have been prepared. The key element in this preparation is the successful removal of surface polymeric carbon by careful gasification to methane by means of dihydrogen. These tungsten carbide powders have been used in catalytic reactions of oxidation of H{sub 2} and hydrogenolysis of alkanes, such as butane, hexane, and neopentane.

The most exciting discovery made over the past year derives from an analysis of the interaction between DNA repair and P-element transposition. A powerful new system was developed for analyzing the repair of DNA double-strand breaks. A screen was completed of mutagenized autosomes obtained from two San Francisco laboratories with the recovery of several mutants that will provide the foundation for future efforts to clone repair related genes. At the same time, strong progress has been made in the cloning and characterization of the repair-related genes mei-41 and mus209. Finally, the efforts to clone the mei-9 gene have uncovered the existence of a unsuspected feature of the system used for transposon-tagging in Drosophila. This new knowledge will aid future cloning efforts as well as those of others in the field.

The Applied Superconductivity Center of the University of Wisconsin-Madison proposes to conduct research on low temperature helium fluid dynamics as it applies to the cooling of internally cooled cabled superconductors. Such conductors are used in fusion reactor designs including most of the coils in ITER. The proposed work is primarily experimental involving measurements of transient and steady state pressure drop in a variety of conductor configurations. Both model and prototype conductors for actual magnet designs will be investigated. The primary goal will be to measure and model the friction factor for these complex geometries. In addition, an effort will be to study transient processes such as heat transfer and fluid expulsion associated with quench conditions.

Compilation of monthly reports from departments in the city of San Antonio, Texas providing statistics, project updates, and other information about services and activities.

Annual report of the Texas Judicial System (the Texas Judicial Council and the Office of Court Administration) describing judicial branch operations, reports and developments, summaries and analyses of court activities, and providing a directory of judges and clerks for the 1990 fiscal year.

Some of the more interesting articles in this GPM are: DOE supporting research on problems at The Geysers; Long-term flow test of Hot Dry Rock system (at Fenton Hill, NM) to begin in Fiscal Year 1992; Significant milestones reached in prediction of behavior of injected fluids; Geopressured power generation experiment yields good results. A number of industry-oriented events and successes are reported, and in that regard it is noteworthy that this report comes near the end of the most active decade of geothermal power development in the U.S. There is a table of all operating U.S. geothermal power projects. The bibliography of research reports at the end of this GPM is useful. (DJE 2005)

This administrative report of the Department of Energy is dated December 21, 1990. It is marked ''DRAFT'' as were many of this type of report, most of which were never made ''Final''. It provides contextual elements for program planning, and covers research on Hydrothermal, Geopressured Geothermal, Hot Dry Rock, and Magma Energy systems. (DJE 2005)

The objective of the proposed experiments is to replicate approximately, by injecting low melting point metal alloys into Freon-11 and liquid nitrogen, the dispersal of corium streams in water. To first gain a better understanding of the corium dispersal process to be simulated, experimental data from the CCM experiments, in which the injection of streams of molten corium into water was studied, was interpreted in cooperation with Argonne National Laboratory (ANL) staff. The results of these experiments are discussed briefly below. This is followed by a description of the preparations made to date for the present simulant experiments.

Funds are requested for the science enrichment training program (emphasis on chemistry and computer science), which will be held at Claflin College during the 1990 and 1991 summers, concomitant with summer school. The thirty participants will include high school students and some college freshmen; the students will come from rural South Carolina schools with limited science and computer facilities. Focus will be on high ability minority students.

This report discusses the following proposed work for relativistic atomic physics at the Superconducting Super Collider: Beam diagnostics; atomic physics research; staffing; education; budget information; statement concerning matching funds; description and justification of major items of equipment; statement of current and pending support; and assurance of compliance.