1,944 Matching Results

Explore Results

Results: 1 - 24 next
open access

DYNAVAC: a transient-vacuum-network analysis code

Description: This report discusses the structure and use of the program DYNAVAC, a new transient-vacuum-network analysis code implemented on the NMFECC CDC-7600 computer. DYNAVAC solves for the transient pressures in a network of up to twenty lumped volumes, interconnected in any configuration by specified conductances. Each volume can have an internal gas source, a pumping speed, and any initial pressure. The gas-source rates can vary with time in any piecewise-linear manner, and up to twenty different tim… more
Date: July 8, 1980
Creator: Deis, G.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Combination free-electron and gaseous laser

Description: A multiple laser having one or more gaseous laser stages and one or more free electron stages is described. Each of the free electron laser stages is sequentially pumped by a microwave linear accelerator. Subsequently, the electron beam is directed through a gaseous laser, in the preferred embodiment, and in an alternative embodiment, through a microwave accelerator to lower the energy level of the electron beam to pump one or more gaseous lasers. The combination laser provides high pulse repet… more
Date: June 8, 1981
Creator: Brau, C. A.; Rockwood, S. D. & Stein, W. E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Hadron-hadron physics at high energy and luminosity

Description: I review some recent theoretical issues relevant to the physics of hadron-hadron collisions. I discuss processes where either energy or luminosity is the most important feature and emphasize the need for experiments at luminosities of 10{sup 33}cm{sup -2}sec{sup 1} if the full range of physics options is to be thoroughly explored. 22 refs., 10 figs.
Date: November 8, 1989
Creator: Hinchliffe, I.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

[Memorandum from Jack Davis to Linus Wright, December 8, 1986]

Description: Photocopy of a memorandum from Jack Davis, Office of the Provost and Vice President for Academic Affairs, to Linus Wright, Dallas ISD. Thanking Wright for his prompt response and letter of support of Dallas ISD participating as a consortium member in the planning a grant proposal, to be sent to the Getty Center for the Arts in Education. Davis is enclosing a copy of the proposal for Wright, which has already been submitted to the Getty. The Getty proposal not present with memorandum.
Date: December 8, 1986
Creator: Davis, Donald Jack
Item Type: Refine your search to only Letter
Partner: UNT Libraries Special Collections
open access

Initial evaluation of photographic data of F- and H-Area seepage basin outcrops

Description: Photographic data for the Savannah River Plant (SRP) were reviewed for 1961 through 1987 to determine the value of this photography in estimating the timing and extent of the F- and H-Area seepage basin outcrops along the upper Four Mile Creek floodplain. In excess of 15,000 frames of photography of the SRP were reviewed. The quality of the photography varied widely and included panchromatic (black and white), natural color, and false color infrared. Altitudes of the photography ranged from 2,0… more
Date: February 8, 1988
Creator: Mackey, H. E., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Geometric continuum regularization of quantum field theory

Description: An overview of the continuum regularization program is given. The program is traced from its roots in stochastic quantization, with emphasis on the examples of regularized gauge theory, the regularized general nonlinear sigma model and regularized quantum gravity. In its coordinate-invariant form, the regularization is seen as entirely geometric: only the supermetric on field deformations is regularized, and the prescription provides universal nonperturbative invariant continuum regularization … more
Date: November 8, 1989
Creator: Halpern, M.B. (California Univ., Berkeley, CA (USA). Dept. of Physics)
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Model of beam head erosion

Description: An analytical model of beam head dynamics is presented, leading to an estimate of the erosion rate due to the combined effects of Ohmic dissipation and scattering. Agreement with the results of a computer simulation and detailed one-dimensional computations is good in all respects except for the scaling of the erosion rate with net current.
Date: August 8, 1980
Creator: Lee, Edward P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Final focus nomenclature

Description: The formal names and common names for all devices in the final focus system of the SLC are listed. The formal names consist of a device type designator, microprocessor designator, and a four-digit unit number. (LEW)
Date: August 8, 1986
Creator: Erickson, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Milliwatt generator heat source. Progress report, July-December 1981

Description: As part of the Milliwatt Generator (MWG) Program, a second series of pressure burst capsules welded offsite was tested; the resulting data indicate that the welds are very similar to those in the first series of capsules. Sufficient hardware was fabricated to meet all scheduled commitments. To provide a unit for feasibility testing, a heat source clad with Hastelloy C was reclad with Inconel 600. Forming development tests on Inconel 600 were conducted with favorable results. A QAS-3 survey was … more
Date: April 8, 1982
Creator: Mershad, E.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Demonstration of energy conservation for multi-deck board dryers. Phase I. Final report

Description: A study was made to determine the feasibility of recover and reuse of low level heat from the exhausts of multi-deck dryers used to dry boards in the building materials industry. There are approximately 1000 dryers of this type in the USA, with no heat recovery equipment. These dryers are used in the manufacture of: roof insulation board, ceiling tile and panel stock, wood fiber sheathing, gypsum board, and veneer plywood. Pilot scale tests and analyses show that heat recovery designs utilizing… more
Date: February 8, 1980
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Laboratory-scale evaluations of alternative plutonium precipitation methods

Description: Plutonium(III), (IV), and (VI) carbonate; plutonium(III) fluoride; plutonium(III) and (IV) oxalate; and plutonium(IV) and (VI) hydroxide precipitation methods were evaluated for conversion of plutonium nitrate anion-exchange eluate to a solid, and compared with the current plutonium peroxide precipitation method used at Rocky Flats. Plutonium(III) and (IV) oxalate, plutonium(III) fluoride, and plutonium(IV) hydroxide precipitations were the most effective of the alternative conversion methods t… more
Date: February 8, 1984
Creator: Martella, L. L.; Saba, M. T. & Campbell, G. K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Imaging system for obtaining space- and time-resolved plasma images on TMX

Description: A Reticon 50 x 50 photodiode array camera has been placed on Livermore's Tandem Mirror Experiment to view a 56-cm diameter plasma source of visible, vacuum-ultraviolet, and x-ray photons. The compact camera views the source through a pinhole, filters, a fiber optic coupler, a microchannel plate intensifier (MCPI), and a reducer. The images are digitized (at 3.3 MHz) and stored in a large, high-speed memory that has a capacity of 45 images. A local LSI-11 microprocessor provides immediate proces… more
Date: April 8, 1980
Creator: Koehler, H.A. & Frerking, C.E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Development of copper sulfide/cadmium sulfide thin-film solar cells

Description: The most important accomplishments during this period were to demonstrate and to elucidate further the complex effects that occur during the aging of Cu/sub 2/S/CdS thin-film solar cells in flowing wet oxygen. There are two distinct effects. At constant illumination, the short-circuit current of cells aged at room temperature consistently decreases with time. The second effect, related to diode opposing current, is more involved and may result from several competing mechanisms. Over the short t… more
Date: March 8, 1982
Creator: Szedon, J. R.; Biter, W. J. & Dickey, H. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Study of optical model parameters for high energy neutron cross sections from 5 to 50 MeV in the mass-140 region

Description: A study of the neutron optical potential on nuclei near mass-140 was begun to extend the energy range and improve the precision of previous neutron total cross section measurements. The extended energy range of this measurement reveals maxima and minima in the total cross section that are evidence of the nuclear Ramsauer effect. A 100-MeV linear accelerator is used to produce a continuum of neutron energies from a Ta-Be conversion target. A 250-meter flight path is used to measure neutron energ… more
Date: May 8, 1980
Creator: Phillips, T.W.; Camarda, H.S. & White, R.M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Backgrounds to the detection of two-body hadronic B decays

Description: We consider backgrounds to the detection of the two-body hadronic decay modes of neutral B mesons and baryons. The largest background is due to the correlated production of pairs of high-p/sub T/ hadrons in the target, but this can be adequately rejected provided the experimental apparatus has sufficient resolution in mass and decay vertex. Another possible source of background arises from the production and decay of charmed and strange particles. Since these particles can travel considerable d… more
Date: January 8, 1988
Creator: Kaplan, D. M.; Peng, Jen-Chieh; Abrams, G. S. & Stockdale, I. E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Equipment qualification research program: program plan

Description: The Lawrence Livermore National Laboratory (LLNL) under the sponsorship of the US Nuclear Regulatory Commission (NRC) has developed this program plan for research in equipment qualification (EQA). In this report the research program which will be executed in accordance with this plan will be referred to as the Equipment Qualification Research Program (EQRP). Covered are electrical and mechanical equipment under the conditions described in the OBJECTIVE section of this report. The EQRP has two p… more
Date: June 8, 1982
Creator: Dong, R.G. & Smith, P.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Present capabilities and new developments in antenna modeling with the numerical electromagnetics code NEC

Description: Computer modeling of antennas, since its start in the late 1960's, has become a powerful and widely used tool for antenna design. Computer codes have been developed based on the Method-of-Moments, Geometrical Theory of Diffraction, or integration of Maxwell's equations. Of such tools, the Numerical Electromagnetics Code-Method of Moments (NEC) has become one of the most widely used codes for modeling resonant sized antennas. There are several reasons for this including the systematic updating a… more
Date: April 8, 1988
Creator: Burke, G. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Total pion cross section measurements. Annual progress report, January 1, 1979-December 31, 1979

Description: The principal effort has been devoted to the data analysis for the pion-nucleus total cross section experiment. Forward scattering amplitudes have been obtained for ..pi..+- mesons on Al, /sup 40/Ca, Cu, Sn, Ho, and Pb. These results are given. Work is continuing on the data reduction for the remaining targets.
Date: February 8, 1980
Creator: Jakobson, M. J. & Jeppesen, R. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Laboratory procedures used in the hot corrosion project

Description: The objective of the Hot Corrosion Project in the LLNL Metals and Ceramics Division is to study the physical and chemical mechanisms of corrosion of nickel, iron, and some of their alloys when these metals are subjected to oxidizing or sulfidizing environments at temperatures between 850 and 950/sup 0/C. To obtain meaningful data in this study, we must rigidly control many parameters. Parameters are discussed and the methods chosen to control them in this laboratory. Some of the mechanics and m… more
Date: April 8, 1980
Creator: Jeys, T.R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Fast transient digitizer

Description: Method and apparatus are presented for sequentially scanning a plurality of target elements with an electron scanning beam modulated in accordance with variations in a high-frequency analog signal to provide discrete analog signal samples representative of successive portions of the analog signal; coupling the discrete analog signal samples from each of the target elements to a different one of a plurality of high speed storage devices; converting the discrete analog signal samples to equivalen… more
Date: July 8, 1981
Creator: Villa, F.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

EPFL (Swiss) fusion-fission hybrid experiment. Progress report, November 1, 1981-January 31, 1982

Description: The trip provided an opportunity for extensive discussions with the staff of the Institut de Genie Atomique (IGA) of the Ecole Polytechnique Federale de Lausanne (EPFL). The discussions covered both the planning of the first series of experiments to be performed in the Hybrid Experiment (hereafter referred to as LOTUS) and the status of calculational work being performed at the University of Washington in support of the LOTUS project.
Date: February 8, 1982
Creator: Woodruff, G.L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Calibration of a neutron log in partially saturated media IV: effects of sonde-wall gap

Description: A gap between a neutron sonde and the wall of a borehole can have a significant effect on the observed count rate. This effect was determined experimentally to be linear with gaps as large as 2.5 cm. The count rate is given by N/sub N/ = K/sub 0/ + K/sub 1/g where K/sub 0/ is the count rate that would be observed at zero gap, and g is the gap. The parameters K/sub 0/ and K/sub 1/ are dependent on both water (ie. hydrogen) content and bulk density. In many situations failure to correct the count… more
Date: March 8, 1984
Creator: Axelrod, M. C. & Hearst, J. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

[Letter from James R. Miller to Carl L. Yeckel, October 8, 1987]

Description: Letter from James R. Miller to Carl L. Yeckel, of the Carl B. and Florence E. King Foundation, on October 8, 1987, mentioning the recent visit of Julian C. Stanley to the university, and thanking Yeckel for his consideration of their proposal. Stanley's letter of thanks to Alfred Hurley is included.
Date: October 8, 1987
Creator: Miller, James R.
Item Type: Refine your search to only Letter
Partner: Texas Academy of Mathematics and Science
open access

[Letter from Valleau Wilkie, Jr. to James J. Muro, October 8, 1987]

Description: Letter from Valleau Wilkie, Jr. to James J. Muro, on October 8, 1987, informing him that Muro's request for a grant to North Texas State University for the Texas Academy of Mathematics and Science has been denied, although he promises that it will be revisited in early 1988.
Date: October 8, 1987
Creator: Wilkie, Valleau, Jr.
Item Type: Refine your search to only Letter
Partner: Texas Academy of Mathematics and Science
Back to Top of Screen