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Potassium terbium fluoride crystal growth development for faraday rotator discs fabrication, 6 July 1978--6 February 1979

Description: Crystal growth experiments were performed and growth of KTb/sub 3/F/sub 10/ crystals were accomplished. The crystal growth experiments consisted of hot zone modification and development of growth parameters. Several boules of KTb/sub 3/F/sub 10/ 30 to 40mm in diameter and one boule 50mm in diameter were grown at rates varying from .5mm/hr to 3.0mm/hr. The crystals evaluated display excellent optical quality. The optical path distortion was less than 0.5 fringe/cm at 633nm as viewed in Twyman--Green interferometry. Growth of large crystals has been limited by mechanical cleavage.
Date: May 17, 1979
Partner: UNT Libraries Government Documents Department

Recent developments in LOFT advanced fuel rod instrumentation

Description: Progress is reported in the areas of fuel centerline temperature measurement, fuel rod pressure measurement, fuel rod axial motion, and upper plenum gas temperature measurement.
Date: July 17, 1979
Creator: Sheen, E. M.; Billeter, T. R.; Cannon, C. P.; Chan, A. I. Y. & Stringer, J. L.
Partner: UNT Libraries Government Documents Department

EPRI geothermal energy R and D 5-year program plan (1975 to 1979)

Description: The recommended EPRI Geothermal Research and Development 5-Year Program Plan has been defined to complement and provide focus for federally sponsored geothermal energy R and D efforts. The scope of the program includes: verification of hydrothermal reservoir capability and low salinity brine heat transfer characteristics at a potential demonstration site followed by design, development and construction of a low salinity hydrothermal demonstration plant in conjunction with an electric utility or utility consortium. Development of a comprehensive set of Guidelines Manuals for use by utility management and engineers spanning the full range of geothermal resource utilization from exploration through plant startup, including not only technical, but environmental, institutional and regulatory factors. A subprogram to define the potential and requirements for Geothermal Systems. A supporting research and technology subprogram oriented toward minimizing the risk associated with utilization of low and high salinity hydrothermal sources. An Advanced Research and Technology subprogram to assess the potential of geopressure resources in conjunction with the Federal government and limited R and D on advanced concepts for utilization of hydrothermal fluids. (MHR)
Date: October 17, 1974
Creator: Spencer, D.F.
Partner: UNT Libraries Government Documents Department

Thermal damage study of beryllium windows used as vacuum barriers in synchrotron radiation beamlines

Description: An experimental study to investigate thermal-induced damage to SSRL-designed beryllium foil windows was performed at LLNL's Laser Welding Research Facility. The primary goal of this study was to determine the threshold at which thermal-stress-induced damage occurs in these commonly used vacuum barriers. An Nd:Yag pulsed laser with cylindrical optics and a carefully designed test cell provided a test environment that closely resembles the actual beamline conditions at SSRL. Tests performed on two beryllium window geometries, with different vertical aperture dimensions but equal foil thicknesses of 0.254 mm, resulted in two focused total-power thresholds at which incipient damage was determined. For a beam spot size similar to that of the Beamline-X Wiggler Line, onset of surface damage for a 5-mm by 25-mm aperture window was observed at 170 W after 174,000 laser pulses (1.2-ms pulse at 100 pps). A second window with double the vertical aperture dimension (10 mm by 25 mm) was observed to have surface cracking after 180,000 laser pulses with 85 W impinging its front surface. It failed after approximately 1,000,000 pulses. Another window of the same type (10 mm by 25 mm) received 2,160,000 laser pulses at 74.4 W, and subsequent metallographic sectioning revealed no signs of through-thickness damage. Comparison of windows with equal foil thicknesses and aperture dimensions has effectively identified the heat flux limit for incipient failure. The data show that halving the aperture's vertical dimension allows doubling the total incident power for equivalent onsets of thermal-induced damage.
Date: September 17, 1987
Creator: Holdener, F.R.; Johnson, G.L.; Karpenko, V.P.; Wiggins, R.K.; Cerino, J.A.; Dormiani, M.T. et al.
Partner: UNT Libraries Government Documents Department

Removal of cesium from uranium recovery process wastes

Description: The Uranium Recovery Process (TBP Process) at Hanford extracts and decontaminates uranium from the Metal Waste produced in the Bismuth Phosphate Process. Aqueous waste, approximately equal in volume to that of the Metal Waste itself, results from the process. Although of several years' age, these wastes are still sufficiently radioactive that they must be returned to underground tanks for storage. For several years aqueous wastes of low radioactive content have been discharged to ground at Hanford. Polyvalent cations are strongly absorbed by the soil. Monovalent cations are poorly absorbed if present in solutions of high salt content. Ground waters migrate toward the Columbia River very slowly. These observations point out the desirability of removing, from wastes to be cribbed, those long-lived radioactive constituents which are poorly absorbed by soil. Cesium (Cs-137) and strontium (Sr-90) are the principal constituents of Hanford wastes which possess these characteristics. Strontium, while more hazardous biologically, is of somewhat less concern than cesium because it is better absorbed from high-salt solutions by soils. This report describes research done to develop on inexpensive process for the removal of fission products, especially cesium, from Uranium Recovery Process Wastes. 4 refs., 13 tabs.
Date: May 17, 1954
Creator: Burns, R. E.; Brandt, R. L. & Clifford, W. E.
Partner: UNT Libraries Government Documents Department

Study of EOCR Modifications for Testing Fast Reactor Fuels

Description: Report issued by the APDA over studies conducted on "methods for increasing the power generation in a fast reactor fuel element test sample" (p. 9). The methods investigated are presented and discussed. This report includes tables, and illustrations.
Date: February 17, 1964
Creator: Ball, G.; DeFelice, J.; Edwards, J. J.; Jens, W. H.; Kovac, L. R.; Poggi, R. et al.
Partner: UNT Libraries Government Documents Department

Two stream instability in electron storage rings

Description: Electron bunches in storage rings can ionize the background gas and depending on the bunch length and spacing between bunches the ions formed can be trapped by the electron space charge forces. It is the purpose of this note to show that the possibility of exciting the two stream instability then exists. This instability if excited would saturate by giving thermal velocity to the electrons i.e., by blowing up the emittance of the beam. Experiments carried out at ADONE have observed an increase in the electron beam emittance in the presence of background ions.
Date: August 17, 1979
Creator: Irani, A.A.
Partner: UNT Libraries Government Documents Department

Cuba: U.S. Restrictions on Travel and Remittances

Description: Restrictions on travel to Cuba have been a key and often contentious component in U.S. efforts to isolate the communist government of Fidel Castro for much of the past 40 years. Under the Bush Administration, enforcement of U.S. restrictions on Cuba travel has increased, and restrictions on travel and on private remittances to Cuba have been tightened. Several legislative initiatives have been introduced in the 109th Congress that would ease restrictions on travel and remittances to Cuba. These bills would, among other things, lift overall restrictions on travel to Cuba, lift the overall embargo, and ease restrictions on exporting agricultural commodities to Cuba.
Date: May 17, 2011
Creator: Sullivan, Mark P.
Partner: UNT Libraries Government Documents Department

Reducing the Budget Deficit: Tax Policy Options

Description: This report analyzes various revenue options for deficit reduction, highlighting proposals made by the President's Fiscal Commission and the Debt Reduction Task Force. Others, such as House Budget Committee Chairman Paul Ryan and the Obama Administration, have noted the importance of tax reform as part of a deficit reduction plans. These plans, however, do not provide the same level of detail as the Fiscal Commission and Debt Reduction Task Force, and are therefore not reviewed in detail as part of this report.
Date: May 17, 2011
Creator: Sherlock, Molly F.
Partner: UNT Libraries Government Documents Department

U.S. Immigration Policy on Haitian Migrants

Description: The environmental, social, and political conditions in Haiti have long prompted congressional interest in U.S. policy on Haitian migrants, particularly those attempting to reach the United States by boat. While some observers assert that such arrivals by Haitians are a breach in border security, others maintain that these Haitians are asylum seekers following a decades old practice of Haitians coming by boat without legal immigration documents. Migrant interdiction and mandatory detention are key components of U.S. policy toward Haitian migrants, but human rights advocates express concern that Haitians are not afforded the same treatment as other asylum seekers.
Date: May 17, 2011
Creator: Wasem, Ruth Ellen
Partner: UNT Libraries Government Documents Department

Intelligence Issues for Congress

Description: To address the challenges facing the U.S. intelligence community in the 21st century, congressional and executive branch initiatives have sought to improve coordination among the different agencies and to encourage better analysis. In December 2004, the Intelligence Reform and Terrorism Prevention Act (P.L. 108-458) was signed, providing for a Director of National Intelligence (DNI) with substantial authorities to manage the national intelligence effort. The legislation also established a separate Director of the Central Intelligence Agency.
Date: May 17, 2011
Creator: Best, Richard A., Jr.
Partner: UNT Libraries Government Documents Department

Nigeria: Elections and Issues for Congress

Description: This report discusses the political climate, development challenges and reform in Nigeria. The report also deliberates the social issues and security concerns of Nigeria. In addition, other issues are considered as Congress provides oversight for over $600 million in U.S. foreign assistance programs to Nigeria.
Date: May 17, 2011
Creator: Ploch, Lauren
Partner: UNT Libraries Government Documents Department

Bahrain: Reform, Security, and U.S. Policy

Description: This report discusses the current state of Bahrain, which has undergone substantial political reforms since the late 1990s, but which still suffers from tension between the Shiite majority and the Sunni-led government. This report focuses particularly on Bahrain's relationship with Iran and Bahrain's relationship with the United States.
Date: May 17, 2011
Creator: Katzman, Kenneth
Partner: UNT Libraries Government Documents Department

FY2012 Budget Highlights for the Human Resources "Superfunction": Education, Training, Social Services, Health, Income Security, and Veterans

Description: This CRS report highlights spending trends and key policy initiatives in the President's February budget and April Framework, and in the House-passed budget resolution, for the six functional categories of the federal budget that comprise the human resources "superfunction." The six human resources functions (and their function codes) are education, training, employment, and social services, health, Medicare, income security, social security, veterans benefits and services.
Date: May 17, 2011
Creator: Spar, Karen & Falk, Gene
Partner: UNT Libraries Government Documents Department

Defense: FY2011 Authorization and Appropriations

Description: The President's FY2011 budget request, released February 1, 2010, requested authorization of $725.9 billion in new budget authority in the FY2011 National Defense Authorization Act. In addition to $548.9 billion for the regular (non-war) operations of the Department of Defense (DOD), the authorization request included $159.3 billion for ongoing military operations in Afghanistan and Iraq, bringing the total DOD request for FY2011 to $708.2 billion. The request also included $17.7 billion for defense-related activities of the Department of Energy.
Date: May 17, 2011
Creator: Towell, Pat
Partner: UNT Libraries Government Documents Department

Analysis of airborne radiometric data. Volume 4. MAZNAI code for gamma-ray spectral enhancement

Description: In gamma-ray spectrometry measurements, an energy distribution of gamma-rays is viewed by a spectrometer which in turn produces a data set. This data is the result of a complex detection process and generally suffers from loss of resolution due to this detection process and to statistical noise. It is the purpose of the MAZNAI computer program to remove the degrading effects of the detector, to minimize the effects of statistical fluctuations, and to construct an enhanced image spectrum that corresponds as closely as possible to the spectrum of radiation incident on the detector. Section 2 of this report gives a brief description of the MAZNAI methodology, Section 3 discusses detector response functions. Section 4 is the user's guide which describes particular details of the preparation of the data necessary for running the code. Appendix A contains the code listing. The Berger and Seltzer Publication, which is the basis for the adopted detector response function parameterization, is included as Appendix B.
Date: January 17, 1979
Creator: Reed, J.H.; Shreve, D.C. & Sperling, S.M.
Partner: UNT Libraries Government Documents Department

Waste incineration and immobilization for nuclear facilities. Status report, October 1977--March 1978

Description: Fluidized bed incineration and processes for immobilization of wastes generated at nuclear facilities are undergoing development. After minor piping modifications to eliminate dust collecting points, a pilot plant fluidized bed incinerator run of 225 continuous hours was successfully completed in a demonstration of component reliability. Vitrification of incinerator ash and other wastes is now being accomplished using a pilot scale unit developed as a continuous flow process.
Date: May 17, 1979
Creator: Johnson, A.J.; Burkhardt, S.C.; Ledford, J.A. & Williams, P.M.
Partner: UNT Libraries Government Documents Department

Aerial radiometric and magnetic survey: Death Valley National Topographic Map, Nevada, California

Description: The results of analysis of the airborne gamma radiation survey flown for the region identified as the Death Valley National Topographic Map NJ11-11 is presented in the bound Volume of this report. The airborne data gathered are reduced by ground computer facilities to yield profile plots of the basic uranium, thorium and potassium equivalent gamma radiation intensities, ratios of these intensities, aircraft altitude above the earth's surface, total gamma ray and earth's magnetic field intensity, correlated as a function of geologic units. The distribution of data within each geologic unit, for all surveyed map lines and tie lines, has been calculated and is included. Two sets of profiled data for each line are included with one set displaying the above-cited data. The second set includes only flight line magnetic field, temperature, pressure, altitude data plus magnetic field data as measured at a base station. A general description of the area, including descriptions of the various geologic units and the corresponding airborne data, is included also.
Date: September 17, 1979
Partner: UNT Libraries Government Documents Department

Velocity distribution in a pinched beam

Description: An explicity procedure is given for distributing transverse velocities to simulate a self pinched beam of specified density profile. The flat top, Bennett and Gaussian profiles are worked examples.
Date: September 17, 1979
Creator: Lee, Edward P.
Partner: UNT Libraries Government Documents Department

Automobile Collision Data: An Assessment of Needs and Methods of Acquisition

Description: A report on evaluation of the automotive crash recorder program proposed by the National Highway Traffic Safety Administration (NHTSA). As the assessment progressed, the implications for automobile collision data as a “whole became apparent and the report has been so titled to provide a more accurate indication of its scope.
Date: February 17, 1975
Creator: United States. Congress. Office of Technology Assessment.
Partner: UNT Libraries Government Documents Department

Integrated system for production of neutronics and photonics calculational constants. Volume 21, Part C, Program SIGMAL (version 79-1): Doppler-broaden evaluated cross sections in the Livermore-Evaluated Nuclear Data Library (ENDL) format. [In FORTRAN IV for CDC 7600]

Description: A code, SIGMAL, to Doppler-broaden evaluated cross sections in the ENDL format was designed. This code can Doppler-broaden cross sections that result from neutrons, protons, deuterons, tritons, /sup 3/He, or alpha particles incident on any target nuclei. The code allows broadening to up to 100 final temperatures, either directly from the initial temperature or by bootstrapping to successively higher temperatures. 6 figures, 2 tables.
Date: March 17, 1979
Creator: Cullen, D.E.
Partner: UNT Libraries Government Documents Department

PERTURBATION-THEORY RULES FOR COMPUTING THE SELF-ENERGY OPERATOR IN QUANTUM STATISTICAL MECHANICS

Description: Highly convenient rules are given for the general term in the time- independent perturbation-theory expansion for the self-energy operator of quantum statistical mechanics. The rules are derived by starting from the usual formalism involving time-independent Green's functions. The well-known formulas for thermodynamic quantities in terms of the self-energy operator are included for completeness. (auth)
Date: December 17, 1962
Creator: Baym, G. & Sessler, A.M.
Partner: UNT Libraries Government Documents Department
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