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Light Absorption and Scattering Mechanisms in Laser Fusion Plasmas

Description: The picture of laser light absorption and scattering which is emerging from theory and computer simulation studies of laser-plasma interactions is described. On the subject of absorption, we discuss theoretical and experimental evidence that resonance absorption in a steepened density profile is a dominant absorption mechanism. Recent work also indicates the presence of critical surface ripples, which we study using two and three dimensional computer simulations. Predictions of hot electron spe… more
Date: October 4, 1977
Creator: Barnes, C.; Estabrook, K. G.; Kruer, W. L.; Langdon, A. B.; Lasinski, B. F.; Max, C. E. et al.
Partner: UNT Libraries Government Documents Department
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Technology for large tandem mirror experiments

Description: Construction of a large tandem mirror (MFTF-B) will soon begin at Lawrence Livermore National Laboratory (LLNL). Designed to reach break-even plasma conditions, the facility will significantly advance the physics and technology of magnetic-mirror-based fusion reactors. This paper describes the objectives and the design of the facility.
Date: September 4, 1980
Creator: Thomassen, K.I.
Partner: UNT Libraries Government Documents Department
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Report of Group II-2: Running at ISA

Description: A discussion is given of the anticipated operating conditions at the ISABELLE storage rings. Communications between experimental and control areas are considered, and beam luminosity monitoring is discussed. Running conditions and expected problems are outlined. (PMA)
Date: August 4, 1977
Creator: Chen, M.; Herrera, J. C.; Littenberg, L.; Thorndike, A.; Ogren, H.; Potter, K. et al.
Partner: UNT Libraries Government Documents Department
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Simple scaling model for exploding pusher targets

Description: A simple model has been developed which when normalized by experiment or Lasnex calculations can be used to scale neutron yields for variations in laser input power and pulse length and target radius and wall thickness. The model also illucidates some of the physical processes occurring in this regime of laser fusion experiments. Within certain limitations on incident intensity and target geometry, the model scales with experiments and calculations to within a factor of two over six decades in … more
Date: November 4, 1977
Creator: Storm, E. K.; Larsen, J. T.; Nuckolls, J. H.; Ahlstrom, H. G. & Manes, K. R.
Partner: UNT Libraries Government Documents Department
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Proton decay: 1982

Description: Employing the current world average ..lambda../sub MS/ = 0.160 GeV as input, the minimal Georgi-Glashow SU(5) model predicts sin/sup 2/theta/sub W/(m/sub W/) = 0.214, m/sub b//m/sub tau/ approx. = 2.8 and tau/sub p/ approx. = (0.4 approx. 12) x 10/sup 29/ yr. The first two predictions are in excellent agreement with experiment; but the implied proton lifetime is already somewhat below the present experimental bound. In this status report, uncertainties in tau/sub p/ are described and effects of… more
Date: March 4, 1982
Creator: Marciano, William J.
Partner: UNT Libraries Government Documents Department
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Magnet power control system for the Tandem Mirror Experiment-Upgrade

Description: This paper describes the desktop computer/CAMAC-based system that controls the power source for the Tandem Mirror Experiment-Upgrade (TMX-U) magnet power system. Presently it contains 42 dc rectifier power supplies connected to 24 magnet coils arranged in 17 circuits. During each shot, the system delivers 22.6 MW dc to the magnets for about 3 s. The system is presently being changed to add six power supplies, two solenoidal throttle coils, and two reverse C-coils. When complete, the delivered p… more
Date: November 4, 1983
Creator: Bell, H.H. Jr.
Partner: UNT Libraries Government Documents Department
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Constructibility issues associated with a nuclear waste repository in basalt

Description: This report contains the text and slide reproductions of a speech on nuclear waste disposal in basalt. The presentation addresses the layout of repository access shafts and subsurface facilities resulting from the conceptual design of a nuclear repository in basalt. The constructibility issues that must be resolved prior to construction are described. (DMC)
Date: December 4, 1981
Creator: Turner, D.A.
Partner: UNT Libraries Government Documents Department
open access

Vacuum system for the Tandem Mirror Experiment

Description: The Tandem Mirror Experiment (TMX) under construction at LLL is a Q-enhancement experiment using two mirror fields to ''plug'' a central solenoid field. Neutral beam injection supplies the energetic neutrals to the plug regions with attendant quantities of cold gas. The vacuum vessel consists of two large stainless steel tanks, which house the plug coils, joined by an aluminum central cell tank, which fits inside the existing solenoid coils from the 2XIIB experiment. The plug tanks are subdivid… more
Date: October 4, 1977
Creator: Atkinson, D.P.; Calderon, M.O. & Nagel, R.J.
Partner: UNT Libraries Government Documents Department
open access

Automated laser fusion target production concept

Description: A target production concept is described for the production of multilayered cryogenic spherical inertial confinement fusion targets. The facility is to deliver targets to the reactor chamber at rates up to 10 per second and at costs consistent with economic production of power.
Date: October 4, 1977
Creator: Hendricks, C.D.
Partner: UNT Libraries Government Documents Department
open access

Intelligent optical design program

Description: Described is a general approach to the development of computer programs capable of designing image-forming optical systems without human intervention and of improving their performance with repeated attempts. The approach utilizes two ideas: (1) interpretation of technical design as a mapping in the configuration space of technical characteristics and (2) development of an intelligent routine that recognizes global optima. Examples of lens systems designed and used in the development of the gen… more
Date: May 4, 1984
Creator: Bohachevsky, I.O.; Viswanathan, V.K. & Woodfin, G.
Partner: UNT Libraries Government Documents Department
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Role of committed minorities in times of crisis

Description: Article discussing the role of committed minorities in time of crisis.
Date: March 4, 2013
Creator: Turalska, Malgorzata; West, Bruce J. & Grigolini, Paolo
Partner: UNT College of Arts and Sciences
open access

Stellarmak a hybrid stellarator: Spheromak

Description: This paper discusses hybridization of modified Stellarator-like transform windings (T-windings) with a Spheromak or Field-Reversed-Mirror configuration. This configuration, Stellarmak, retains the important topological advantage of the Spheromak or FRM of having no plasma linking conductors or blankets. The T-windings provide rotational transformation in toroidal angle of the outer poloidal field lines, in effect creating a reversed B/sub Toroidal/ Spheromak or adding average B/sub T/ to the FR… more
Date: January 4, 1980
Creator: Hartman, C. W.
Partner: UNT Libraries Government Documents Department
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Problems associated with transuranium determination of suspended solids in seawater samples

Description: Particulate material collected by filtration from the north Equatorial Pacific Ocean has been analyzed for plutonium and other radionuclides. Different filter pore size, types of filter substrates, flow rates, and sample volumes were evaluated. Retention of /sup 239 +240/Pu was found to vary with the sample volume filtered and was not greatly affected by the type of filter substrate, flow rate, or porosity tested. About 7 +- 3% of the /sup 239 +240/Pu activity in north Equatorial Pacific surfac… more
Date: October 4, 1979
Creator: Wong, K. M.; Jokela, T. A. & Noshkin, V. E.
Partner: UNT Libraries Government Documents Department
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Aggregated systems model: a tool for nuclear safeguards decision-making

Description: Setting performance criteria for systems that safeguard special nuclear material (SNM) involves many considerations: characteristics of adversaries attempting to divert SNM, safeguards response to attempts, costs of safeguards systems, and the consequences of diverted SNM. This paper describes an Aggregated Systems Model which is designed to assist decision makers integrate and evaluate consistently these diverse factors. Results from applying the model to a hypothetical facility handling SNM a… more
Date: October 4, 1979
Creator: Al-Ayat, R.; Judd, B. & Huntsman, J.
Partner: UNT Libraries Government Documents Department
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Scientific problems of fusion, solved and to be solved

Description: A good comprehensive review of research progress and the present status of research on inertial confinement, tokamak device, and magnetic mirror technology is given. (MOW)
Date: November 4, 1977
Creator: Post, Richard F.
Partner: UNT Libraries Government Documents Department
open access

Design of an eight-megawatt series regulator

Description: An 8-MW, 100 percent duty cycle, hard tube series regulator used to control the accelerating voltage of a neutral beam source is described. The series tube is a developmental switch/regulator tube capable of holding off 200 kV passing 85 A, and dissipating 2 MW of anode power. The regulator has high-speed interrupt capability to minimize the power delivered to the load in the event of a load fault. Its design is such that it can be used to regulate both positive and negative accelerating voltag… more
Date: October 4, 1977
Creator: DeVore, K.R.
Partner: UNT Libraries Government Documents Department
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Responsibilities, opportunities and challenges in geophysical exploration

Description: Geophysical exploration for engineering purposes is conducted to decrease the risk in encountering site uncertainties in construction of underground facilities. Current responsibilities, opportunities and challenges for those with geophysical expertise are defined. These include: replacing the squiggly line format, developing verification sites for method evaluations, applying knowledge engineering and assuming responsibility for crucial national problems involving rock mechanics expertise.
Date: May 4, 1982
Creator: Rytle, R. J.
Partner: UNT Libraries Government Documents Department
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Magnetic and inertial fusion status and development plans

Description: Controlled fusion, pursued by investigators in both the magnetic and inertial confinement research programs, continues to be a strong candidate as an intrinsically safe and virtually inexhaustible long-term energy source. We describe the status of magnetic and inertial confinement fusion in terms of the accomplishments made by the research programs for each concept. The improvement in plasma parameters (most frequently discussed in terms of the Tn tau product of ion temperature, T, density, n, … more
Date: December 4, 1987
Creator: Correll, D. & Storm, E.
Partner: UNT Libraries Government Documents Department
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New concept for pumping the edge plasma

Description: 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.
Partner: UNT Libraries Government Documents Department
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Interactive computerized laboratory data management system

Description: In support of this effort, an average of 55 samples with approximately 4 analyses per sample comes into the ICPP analytical laboratory each day. Information concerning these samples, the 60 people handling the samples, and the 90 methods of running samples is registered, processed, and accessed daily. A manual paper system was found to be inadequate for an efficient, accurate, interacting network; thus, the need for a more spontaneous system emanated. The Analytical Laboratory Computer System i… more
Date: December 4, 1979
Creator: Mirrop, C. A.; Baldwin, J. M.; Camarata, A. R.; Halverson, G. D.; Hand, R. L.; Wade, M. A. et al.
Partner: UNT Libraries Government Documents Department
open access

Z' Coupling Information From LHeC

Description: No Description Available.
Date: April 4, 2008
Creator: Rizzo, Thomas G.
Partner: UNT Libraries Government Documents Department
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R. Bruce Merrifield and Solid-Phase Peptide Synthesis: A Historical Assessment

Description: Bruce Merrifield, trained as a biochemist, had to address three major challenges related to the development and acceptance of solid-phase peptide synthesis (SPPS). The challenges were (1) to reduce the concept of peptide synthesis on a insoluble support to practice, (2) overcome the resistance of synthetic chemists to this novel approach, and (3) establish that a biochemist had the scientific credentials to effect the proposed revolutionary change in chemical synthesis. How these challenges wer… more
Date: December 4, 2007
Creator: Mitchell, A R
Partner: UNT Libraries Government Documents Department
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