Direct-drive laser fusion: status and prospects (open access)

Direct-drive laser fusion: status and prospects

Techniques have been developed to improve the uniformity of the laser focal profile, to reduce the ablative Rayleigh-Taylor instability, and to suppress the various laser-plasma instabilities. There are now three direct-drive ignition target designs that utilize these techniques. Evaluation of these designs is still ongoing. Some of them may achieve the gains above 100 that are necessary for a fusion reactor. Two laser systems have been proposed that may meet all of the requirements for a fusion reactor.
Date: January 14, 1998
Creator: Afeyan, B B; Bodner, S E; Gardner, J H; Knauer, J P; Lee, P; Lehmberg, R H et al.
System: The UNT Digital Library
Studies of human mutation rates. Progress report, November 1, 1993--October 31, 1994 (open access)

Studies of human mutation rates. Progress report, November 1, 1993--October 31, 1994

None
Date: September 14, 1994
Creator: Neel, J. V. & Hanash, S. M.
System: The UNT Digital Library
Review of private sector treatment, storage, and disposal capacity for radioactive waste. Revision 1 (open access)

Review of private sector treatment, storage, and disposal capacity for radioactive waste. Revision 1

This report is an update of a report that summarized the current and near-term commercial and disposal of radioactive and mixed waste. This report was capacity for the treatment, storage, dating and written for the Idaho National Engineering Laboratory (INEL) with the objective of updating and expanding the report entitled ``Review of Private Sector Treatment, Storage, and Disposal Capacity for Radioactive Waste``, (INEL-95/0020, January 1995). The capacity to process radioactively-contaminated protective clothing and/or respirators was added to the list of private sector capabilities to be assessed. Of the 20 companies surveyed in the previous report, 14 responded to the request for additional information, five did not respond, and one asked to be deleted from the survey. One additional company was identified as being capable of performing LLMW treatability studies and six were identified as providers of laundering services for radioactively-contaminated protective clothing and/or respirators.
Date: April 14, 1995
Creator: Smith, Miles; Harris, J. Gordon; Moore-Mayne, Suzanne; Mayes, Roger & Naretto, Charles
System: The UNT Digital Library
Alpha Particle Physics Experiments in the Tokamak Fusion Test Reactor (open access)

Alpha Particle Physics Experiments in the Tokamak Fusion Test Reactor

Alpha particle physics experiments were done on the Tokamak Fusion Test Reactor (TFTR) during its deuterium-tritium (DT) run from 1993-1997. These experiments utilized several new alpha particle diagnostics and hundreds of DT discharges to characterize the alpha particle confinement and wave-particle interactions. In general, the results from the alpha particle diagnostics agreed with the classical single-particle confinement model in magnetohydrodynamic (MHD) quiescent discharges. Also, the observed alpha particle interactions with sawteeth, toroidal Alfvén eigenmodes (TAE), and ion cyclotron resonant frequency (ICRF) waves were roughly consistent with theoretical modeling. This paper reviews what was learned and identifies what remains to be understood.
Date: December 14, 1998
Creator: Budny, R. V.; Darrow, D. S.; Medley, S. S.; Nazikian, R. & Zweben, S. J.
System: The UNT Digital Library
ARISE: American renaissance in science education (open access)

ARISE: American renaissance in science education

The national standards and state derivatives must be reinforced by models of curricular reform. In this paper, ARISE presents one model based on a set of principles--coherence, integration of the sciences, movement from concrete ideas to abstract ones, inquiry, connection and application, sequencing that is responsive to how people learn.
Date: September 14, 1998
Creator: unknown
System: The UNT Digital Library
Federal Mandatory Minimum Sentencing Statutes: A List of Citations with Captions, Introductory Comments, and Bibliography (open access)

Federal Mandatory Minimum Sentencing Statutes: A List of Citations with Captions, Introductory Comments, and Bibliography

None
Date: August 14, 1999
Creator: Doyle, Charles
System: The UNT Digital Library
National Biomedical Tracer Facility. Project definition study (open access)

National Biomedical Tracer Facility. Project definition study

We request a $25 million government-guaranteed, interest-free loan to be repaid over a 30-year period for construction and initial operations of a cyclotron-based National Biomedical Tracer Facility (NBTF) in North Central Texas. The NBTF will be co-located with a linear accelerator-based commercial radioisotope production facility, funded by the private sector at approximately $28 million. In addition, research radioisotope production by the NBTF will be coordinated through an association with an existing U.S. nuclear reactor center that will produce research and commercial radioisotopes through neutron reactions. The combined facilities will provide the full range of technology for radioisotope production and research: fast neutrons, thermal neutrons, and particle beams (H{sup -}, H{sup +}, and D{sup +}). The proposed NBTF facility includes an 80 MeV, 1 mA H{sup -} cyclotron that will produce proton-induced (neutron deficient) research isotopes.
Date: February 14, 1995
Creator: Schafer, R.
System: The UNT Digital Library
Electric power monthly, December 1995 with data for September 1995 (open access)

Electric power monthly, December 1995 with data for September 1995

This publication presents monthly electricity statistics for a wide audience including Congress, Federal and State agencies, the electric utility industry, and the general public. Its purpose is to provide energy decisionmakers with accurate and timely information that may be used in forming various perspectives on electric issues that lie ahead. EIA collected the information to fulfill its data collection and dissemination responsibilities. (User instructions on EIA`s electronic publishing system are included, as is a glossary.)
Date: December 14, 1995
Creator: unknown
System: The UNT Digital Library
Engineering report single-shell tank farms interim measures to limit infiltration through the vadose zone (open access)

Engineering report single-shell tank farms interim measures to limit infiltration through the vadose zone

Identifies, evaluates and recommends interim measures for reducing or eliminating water sources and preferential pathways within the vadose zone of the single-shell tank farms. Features studied: surface water infiltration and leaking water lines that provide recharge moisture, and wells that could provide pathways for contaminant migration. An extensive data base, maps, recommended mitigations, and rough order of magnitude costs are included.
Date: October 14, 1999
Creator: Haass, C. C.
System: The UNT Digital Library
Novel techniques for slurry bubble column hydrodynamics (open access)

Novel techniques for slurry bubble column hydrodynamics

The objective of this cooperative research effort between Washington University, Ohio State University and Exxon Research Engineering Company was to improve the knowledge base for scale-up and operation of slurry bubble column reactors for syngas conversion and other coal conversion processes by increased reliance on experimentally verified hydrodynamic models. During the first year (July 1, 1995--June 30, 1996) of this three year program novel experimental tools (computer aided radioactive particle tracking (CARPT), particle image velocimetry (PIV), heat probe, optical fiber probe and gamma ray tomography) were developed and tuned for measurement of pertinent hydrodynamic quantities, such as velocity field, holdup distribution, heat transfer and bubble size. The accomplishments were delineated in the First Technical Annual Report. The second year (July, 1996--June 30, 1997) was spent on further development and tuning of the novel experimental tools (e.g., development of Monte Carlo calibration for CARPT, optical probe development), building up the hydrodynamic data base using these tools and comparison of the two techniques (PIV and CARPT) for determination of liquid velocities. A phenomenological model for gas and liquid backmixing was also developed. All accomplishments were summarized in the Second Annual Technical Report. During the third and final year of the program (July …
Date: May 14, 1999
Creator: Dudukovic, M. P.
System: The UNT Digital Library
Cost and quality of fuels for electric utility plants, 1994 (open access)

Cost and quality of fuels for electric utility plants, 1994

This document presents an annual summary of statistics at the national, Census division, State, electric utility, and plant levels regarding the quantity, quality, and cost of fossil fuels used to produce electricity. Purpose of this publication is to provide energy decision-makers with accurate, timely information that may be used in forming various perspectives on issues regarding electric power.
Date: July 14, 1995
Creator: unknown
System: The UNT Digital Library