States

Geometric perturbation theory and plasma physics (open access)

Geometric perturbation theory and plasma physics

Modern differential geometric techniques are used to unify the physical asymptotics underlying mechanics, wave theory and statistical mechanics. The approach gives new insights into the structure of physical theories and is suited to the needs of modern large-scale computer simulation and symbol manipulation systems. A coordinate-free formulation of non-singular perturbation theory is given, from which a new Hamiltonian perturbation structure is derived and related to the unperturbed structure. The theory of perturbations in the presence of symmetry is developed, and the method of averaging is related to reduction by a circle group action. The pseudo-forces and magnetic Poisson bracket terms due to reduction are given a natural asymptotic interpretation. Similar terms due to changing reference frames are related to the method of variation of parameters, which is also given a Hamiltonian formulation. These methods are used to answer a question about nearly periodic systems. The answer leads to a new secular perturbation theory that contains no ad hoc elements. Eikonal wave theory is given a Hamiltonian formulation that generalizes Whitham's Lagrangian approach. The evolution of wave action density on ray phase space is given a Hamiltonian structure using a Lie-Poisson bracket. The relationship between dissipative and Hamiltonian systems is discussed. …
Date: April 4, 1985
Creator: Omohundro, S.M.
Object Type: Report
System: The UNT Digital Library
Test and demonstration of a 1-MW wellhead generator: helical screw expander power plant, Model 76-1. Final report to the International Energy Agency (open access)

Test and demonstration of a 1-MW wellhead generator: helical screw expander power plant, Model 76-1. Final report to the International Energy Agency

A 1-MW geothermal wellhead power plant incorporating a Lysholm or helical screw expander (HSE) was field tested between 1980 and 1983 by Mexico, Italy, and New Zealand with technical assistance from the United States. The objectives were to provide data on the reliability and performance of the HSE and to assess the costs and benefits of its use. The range of conditions under which the HSE was tested included loads up to 933 kW, mass flowrates of 14,600 to 395, 000 lbs/hr, inlet pressures of 64 to 220 psia, inlet qualities of 0 to 100%, exhaust pressures of 3.1 to 40 psia, total dissolved solids up to 310,000 ppM, and noncondensible gases up to 38% of the vapor mass flow. Typical machine efficiencies of 40 to 50% were calculated. For most operations efficiency increased approximately logarithmically with shaft power, while inlet quality and rotor speed had only small effects. The HSE was designed with oversized internal clearances in the expectation that adherent scale would form during operation. Improvements in machine efficiency of 3.5 to 4 percentage points were observed over some test periods with some scale deposition. A comparison with a 1-MW back-pressure turbine showed that the HSE can compete …
Date: July 4, 1985
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Simulation of automatic control of MFTF-B neutral beams (open access)

Simulation of automatic control of MFTF-B neutral beams

This report describes the results obtained by using data generated at Lawrence Livermore Laboratory's MFS Test Facility as input to the filtering and control programs developed at LBL. Graphs that illustrate the source models/filters performance, as well as some conditioning history are included. Probable sources of error are discussed.
Date: March 4, 1985
Creator: Theil, E.
Object Type: Report
System: The UNT Digital Library
New concept for pumping the edge plasma (open access)

New concept for pumping the edge plasma

A new concept is proposed for pumped limiter designs that allows more flexibility and therefore better control of the edge plasma and its recycling at the limiter than previous designs.
Date: April 4, 1985
Creator: Barr, W.L.
Object Type: Article
System: The UNT Digital Library
High efficiency ICF driver employing magnetically confined plasma rings (open access)

High efficiency ICF driver employing magnetically confined plasma rings

We discuss the possibility of achieving energy, power and power density necessary for ICF by magnetically accelerating plasma confined by a compact torus (CT) field configuration. The CT, which consists of a dipole (poloidal) field and imbedded toroidal field formed by force-free, plasma current, is compressed and accelerated between coaxial electrodes by B/sub THETA/ fields as in a coaxial railgun. Compression and acceleration over several meters by a 9.4 MJ capacitor bank is predicted to give a 5.7 cm radius, 0.001 gm CT 5 MJ kinetic energy (10/sup 7/ m/sec). Transport and focussing several meters by a disposable lithium pipe across the containment vessel is predicted to bring 4.8 MJ into the pellet region in 0.5 cm/sup 2/ area in 0.3 ns. The high efficiency (approx.50%) and high energy delivery of the CT accelerator could lead to low cost, few hundred MW power plants that are economically viable.
Date: March 4, 1985
Creator: Meeker, D. J.; Hammer, J. H. & Hartman, C. W.
Object Type: Article
System: The UNT Digital Library
Technical and historical overview of the study at Livermore of porous antireflection coatings (open access)

Technical and historical overview of the study at Livermore of porous antireflection coatings

The testing program leading to selection of antireflection coatings for the NOVA laser is reviewed. Limiting problems that prevented use of some coating technologies are described, and estimates are made of the current value of pursuing solutions to those problems.
Date: April 4, 1985
Creator: Milam, D.
Object Type: Article
System: The UNT Digital Library
Magnetic ripple correction in tandem mirrors by ferromagnetic inserts (open access)

Magnetic ripple correction in tandem mirrors by ferromagnetic inserts

Magnetic ripple of 1% or more caused by discrete solenoid coils in the central cells of tandem mirrors may severely affect the MHD stability. The ripple amplitude can be reduced by an order of magnitude by ferromagnetic annuli inserted within the coils at the regions of ripple maxima. The inserts need not affect the accessibility, coil diameter, or capital cost, since large quantities of steel are required within the coils for the neutron blanket and shield. Design of the ripple correction is simplified and linearized by the cylindrical geometry and by the saturation of the ferromagnetic steel.
Date: April 4, 1985
Creator: Hamilton, G.W.
Object Type: Article
System: The UNT Digital Library
Experimental level-structure determination in odd-odd actinide nuclei (open access)

Experimental level-structure determination in odd-odd actinide nuclei

The status of experimental determination of level structure in odd-odd actinide nuclei is reviewed. A technique for modeling quasiparticle excitation energies and rotational parameters in odd-odd deformed nuclei is applied to actinide species where new experimental data have been obtained by use of neutron-capture gamma-ray spectroscopy. The input parameters required for the calculation are derived from empirical data on single-particle excitations in neighboring odd-mass nuclei. Calculated configuration-specific values for the Gallagher-Moszkowski splittings are used. Calculated and experimental level structures for /sup 238/Np, /sup 244/Am, and /sup 250/Bk are compared, as well as those for several nuclei in the rare-earth region. The agreement for the actinide species is excellent, with bandhead energies deviating 22 keV and rotational parameters 5%, on the average. Applications of this modeling technique are discussed.
Date: April 4, 1985
Creator: Hoff, R.W.
Object Type: Article
System: The UNT Digital Library
Application of structural-mechanics methods to the design of large tandem-mirror fusion devices (MFTF-B) (open access)

Application of structural-mechanics methods to the design of large tandem-mirror fusion devices (MFTF-B)

The Mirror Fusion Test Facility (MFTF-B) at Lawrence Livermore National Laboratory requires state-of-the-art structural-mechanics methods to deal with access constraints for plasma heating and diagnostics, alignment requirements, and load complexity and variety. Large interactive structures required an integrated analytical approach to achieve a reasonable level of overall system optimization. The Tandem Magnet Generator (TMG) creates a magnet configuration for the EFFI calculation of electromagnetic-field forces that, coupled with other loads, form the input loading to magnet and vessel finite-element models. The analytical results provide the data base for detailed design of magnet, vessel, foundation, and interaction effects.
Date: March 4, 1985
Creator: Karpenko, V.N. & Ng, D.S.
Object Type: Article
System: The UNT Digital Library
Marine Sample Exploitation Project: estimates regarding the sensitivity and technology for the detection of nuclear explosion debris in the marine environment (open access)

Marine Sample Exploitation Project: estimates regarding the sensitivity and technology for the detection of nuclear explosion debris in the marine environment

The report discusses the possibility of detecting a small nuclear explosion in which most of the fission products are released to the ocean. The use of marine plankton as bioaccumulators is proposed to deal with the problem of dilution. 7 refs. (ACR)
Date: June 4, 1985
Creator: Marsh, K.V. & Buddemeier, R.W.
Object Type: Report
System: The UNT Digital Library
Tokamak ignition/burn experimental research device (open access)

Tokamak ignition/burn experimental research device

As part of a continuing effort by the Office of Fusion Energy to define an ignition experiment, a superconducting tokamak has been designed with thin neutron shielding and aggressive magnet and plasma parameters. By so minimizing the inner radial dimensions of the tokamak center post, coil, and shielding region, the plasma major radius is reduced with a corresponding reduction in device costs. The peak nuclear-heating rate in the superconducting TF coils is 22 mW/cm/sup 3/, which results in a steady heat load to the cryogenic system of 50 kW. Fast-wave, lower-hybrid heating would be used to induce a 10-MA current in a moderate density plasma. Then pellet fueling would raise the density to achieve ignition as the current decays in a few hundred seconds. Steady-state current drive in subignited conditions permits a 0.8 MW/m/sup 2/ average wall loading to study plasma and nuclear engineering effects.
Date: April 4, 1985
Creator: Henning, C. D.; Logan, B. G.; Barr, W. L.; Bulmer, R. H.; Doggett, J. N.; Johnston, B. M. et al.
Object Type: Article
System: The UNT Digital Library
Texas Register, Volume 10, Number 2, Pages 63-110, January 4, 1985 (open access)

Texas Register, Volume 10, Number 2, Pages 63-110, January 4, 1985

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.
Date: January 4, 1985
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Texas Register, Volume 10, Number 43, Pages 1763-1806, June 4, 1985 (open access)

Texas Register, Volume 10, Number 43, Pages 1763-1806, June 4, 1985

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.
Date: June 4, 1985
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Texas Register, Volume 10, Number 74, Pages 3821-3864, October 4, 1985 (open access)

Texas Register, Volume 10, Number 74, Pages 3821-3864, October 4, 1985

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.
Date: October 4, 1985
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Texas Attorney General Opinion: JM-372 (open access)

Texas Attorney General Opinion: JM-372

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, Jim Mattox, regarding a legal question submitted for clarification: Whether a vehicle with a valid Dealer's Temporary Cardboard Tags must have properly operating tail and brake lights.
Date: November 4, 1985
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
Texas Attorney General Opinion: JM-373 (open access)

Texas Attorney General Opinion: JM-373

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, Jim Mattox, regarding a legal question submitted for clarification: Authority of a county and/or district clerk to affix a judge's signature to a judgement in a criminal case.
Date: November 4, 1985
Creator: Texas. Attorney-General's Office.
Object Type: Text
System: The Portal to Texas History
An ethical analysis of withdrawal from life-sustaining technologies and assisted death: a report for the Office of Technology Assessment (open access)

An ethical analysis of withdrawal from life-sustaining technologies and assisted death: a report for the Office of Technology Assessment

This report is designated to offer an ethical analysis of decisions to withhold and to withdrew life-sustaining technologies form patients in accord with their wishes and interests.
Date: October 4, 1985
Creator: Childress, James F.
Object Type: Report
System: The UNT Digital Library
Injection and Beam Dumping for RHIC (Recap of RHIC Meeting Dated 31 July 85) (open access)

Injection and Beam Dumping for RHIC (Recap of RHIC Meeting Dated 31 July 85)

None
Date: November 4, 1985
Creator: Claus, J.
Object Type: Report
System: The UNT Digital Library
Texas Broilers: For Week Ending November 30, 1985 (open access)

Texas Broilers: For Week Ending November 30, 1985

Weekly report of the Texas Crop and Livestock Reporting Service on broiler chick numbers in Texas and compared with other states. It includes compiled statistics across six consecutive weeks, from the week ending October 26 to the week ending November 30, during 1984 and 1985 for broiler eggs set, chicks hatched, and chicks placed.
Date: December 4, 1985
Creator: Texas Crop and Livestock Reporting Service
Object Type: Report
System: The Portal to Texas History
Texas Broilers: For Week Ending August 31, 1985 (open access)

Texas Broilers: For Week Ending August 31, 1985

Weekly report of the Texas Crop and Livestock Reporting Service on broiler chick numbers in Texas and compared with other states. It includes compiled statistics across six consecutive weeks, from the week ending July 27 to the week ending August 31, during 1984 and 1985 for broiler eggs set, chicks hatched, and chicks placed.
Date: September 4, 1985
Creator: Texas Crop and Livestock Reporting Service
Object Type: Report
System: The Portal to Texas History
In-beam Spectroscopy Using the (t,p) Reaction: Recent Results Near A = 100 (open access)

In-beam Spectroscopy Using the (t,p) Reaction: Recent Results Near A = 100

Charged particle spectroscopy using the (t,p) reaction has been employed for more than two decades to study the low-energy structure of nuclei. This reaction has contributed significantly to the elucidation of single-particle and collective phenomena for neutron rich nuclei in virtually every mass region. We have begun to use the (t,p) reaction in conjunctionuclei with in-beam ..gamma..-ray and conversion-electron spectroscopy to bring additional understanding to low-energy nuclear structure. In this report we briefly discuss the experimental considerations in using this reaction for in-beam spectroscopy, and present some results for nuclei with mass near 100.
Date: September 4, 1985
Creator: Henry, E. A.; Estep, R. J.; Meyer, R. A.; Kantele, J.; Decman, D. J.; Mann, L. G. et al.
Object Type: Article
System: The UNT Digital Library
Westinghouse Materials Company (WMCO) of Ohio. Final report, October 25, 1985--December 31, 1985 (open access)

Westinghouse Materials Company (WMCO) of Ohio. Final report, October 25, 1985--December 31, 1985

This document summarizes the second two weeks of the transition plan for Westinghouse Materials Company (WMCO) to transition into management of the Feed Materials Production Center. The report presents accomplishments, planned activities, and percieved problems for the process, organized into 15 general areas: operations and maintenance; human resources; community involvement; environmental, safety and health; security and safeguards; finance; legal and contracts management; engineering and construction; management control systems; quality assurance; waste management; productivity retention program; purchasing; liaison with customers of FMPC (Users) and DOE; development of 9-month program plan.
Date: December 4, 1985
Creator: Boswell, B.
Object Type: Report
System: The UNT Digital Library
209-E Upgrades (open access)

209-E Upgrades

Pacific Northwest Laboratory has initiated a review of the Safeguards and Security systems at the Critical Mass Laboratory with regards to determining appropriate upgrading actions that assure that an effective and efficient Safeguards and Security posture consistent with DOE-RL policies, procedures, and priorities is effected. As a result of this review, PNL has concluded that specific upgrades are required at CML that provide a demonstrated enhancement to the overall security posture of the facility and are based upon prudent expenditures of government funds. It was further concluded that additional recommended upgrades provide minimal improvement to the overall security system at a significant outlay of funds.
Date: February 4, 1985
Creator: Merrill, B. J. & DeMyer, J. J.
Object Type: Report
System: The UNT Digital Library
San Antonio Monthly Reports: January 1985 (open access)

San Antonio Monthly Reports: January 1985

Monthly reports documenting San Antonio municipal board activities and city permitting for January 1985.
Date: February 4, 1985
Creator: San Antonio (Tex.)
Object Type: Report
System: The Portal to Texas History