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in creator/contributor: "Jacobs, J."

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BEAM CURRENT INTEGRATOR

The design and operation of a beam current integrntor are described, and the theory of operation is discussed. The instrument has two channels. The console channel is designed to measure the accumulation of charge received by a target during a period of a day no matter what the range used in the experimenter's chaanel. An analysis indicated that this unit will measure the accumulation of charge by a target to an accuracy of 0.1215% assuming that the constant error due to shorting the integratin… more

Date: January 1, 1962

Creator: Jacobs, J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Perimeter intrusion detection and assessment system

To obtain an effective perimeter intrusion detection system requires careful sensor selection, procurement, and installation. The selection process involves a thorough understanding of the unique site features and how these features affect the performance of each type of sensor. It is necessary to develop procurement specifications to establish acceptable sensor performance limits. Careful explanation and inspection of critical installation dimensions is required during on-site construction. Th… more

Date: November 1, 1977

Creator: Eaton, M.J.; Jacobs, J. & McGovern, D.E.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Perimeter intrusion detection and assessment system

The key elements of the system considered at a materials storage site are intrusion sensors, alarm assessment, and system control and display. Three papers discussing each of these topics are compiled. They are abstracted individually. (JSR)

Date: January 1, 1977

Creator: Eaton, M. J.; Jacobs, J. & McGovern, D. E.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Physical protection solutions for security problems at nuclear power plants. [PWR; BWR]

Under Department of Energy sponsorship, Sandia National Laboratories has developed a broad technological base of components and integrated systems to address security concerns at facilities of importance, including nuclear reactors. The primary security concern at a light water reactor is radiological sabotage, a deliberate set of actions at a plant which could expose the public to a significant amount of radiation (on the order of 10 CFR 100 limits). (Also of importance to plant operators are … more

Date: September 1, 1980

Creator: Darby, J.L. & Jacobs, J.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Metal vapor excimer laser. Quarterly progress report for period February 1, 1978--April 30, 1978

Major effort was expended in the final assembly of the gain experiment apparatus; this phase had been delayed by some magnet and discharge tube problems which have now been solved. The addition of the discharge circuitry, now underway, is the last step before gain and discharge tests. The metal testing oven is complete and preliminary tests are underway which show encouraging results concerning the compatibility of mercury vapor and Inconel and 316 SS. Some initial modeling was done with the Bo… more

Date: June 30, 1978

Creator: Kovacs, M.A. & Jacobs, J.H.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Beam Current Integrator

The object of this report is to acquaint the operator with the operational and technical aspects of the beam current integrator as well as the theory of the system operation. The design and operation of a beam current integrator are described, and the theory of operation is discussed. The instrument has two channels. The console channel is designed to measure the accumulation of charge received by a target during a period of a day no matter what the range used in the experimenter's channel. An … more

Date: January 5, 1962

Creator: Jacobs, J.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Experimental study of instability growth patterns of a shock- accelerated, thin fluid layer

We have discovered a remarkable set of flow patterns induced by shock acceleration of two nearby, perturbed interfaces. Using planar laser-induced fluorescence (PLIF), we observe three distinct patterns in the nonlinear evolution of Richtmyer-Meshkov (RM) instabilities associated with this flow. We observe two patterns dominated by vortex pairs and one pattern showing no vortex pairing (until late time) for initial conditions that are indistinguishable by measurement techniques available for ou… more

Date: April 1, 1993

Creator: Jacobs, J. W.; Jenkins, D. G.; Klein, D. L. & Benjamin, R. F.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Experimental study of a shock accelerated thin gas layer

Planar laser-induced fluorescence imaging is utilized in shock-tube experiments to visualize the development of a shock-accelerated thin gas layer. The Richtmyer-Meshkov instability of both sides of the heavy gas layer causes perturbations initially imposed on the two interfaces to develop into one of three distinct flow patterns. Two of the patterns exhibit vortex pairs which travel either upstream or downstream in the shock tube, while the third is a sinuous pattern that shows no vortex devel… more

Date: August 1, 1993

Creator: Jacobs, J. W.; Jenkins, D. G.; Klein, D. L. & Benjamin, R. F.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Landmine Detection Using Backscattered X-Ray Radiography

The implementation of a backscattered x-ray landmine detection system has been demonstrated in laboratories at both Sandia National Laboratories (SNL) and the University of Florida (UF) The next step was to evaluate the modality by assembling a system for fieldwork and to evaluate the systems performance with real landmines. To assess the system's response to a variety of objects, buried simulated plastic and metal antitank landmines, surface simulated plastic antipersonnel landmines, and surfa… more

Date: July 16, 1999

Creator: Jacobs, J.; Lockwood, G. J.; Selph, M. M.; Shope, S. L. & Wehlburg, J. C.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Final report for CAFDA project entitled, Experimental and numerical investigation of accelerated fluid interface

The main thrust of this collaborative effort can be summarized as an attempt to use the strengths of physical experiments and numerical simulations in understanding the dynamics of accelerated interfaces. Laboratory experiments represent the true nature of the physical processes and the simulations represent a model of these processes. We have taken the first steps toward this goal through development and calibration of new experimental techniques as well as validation and direct, systematic, a… more

Date: March 26, 1997

Creator: Greenough, J.A.; Jacobs, J.W. & Marcus, D.L.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Utilization of Three Kids Manganese Ore in the Production of Electrolytic Manganese

Report issued by the U.S. Bureau of Mines regarding specific manganese ore from Nevada and its use in electrolytic production. The development processes and methods are presented. This report includes tables, maps, illustrations, and photographs.

Date: June 1945

Creator: Allen, Glenn L.; Jacobs, J. H.; Hunter, J. W. & Sillers, F., Jr.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Removal of chlorinated and non-chlorinated alkanes in a trickle-bed biofilter

Increasing restrictions in emissions from a variety of industrial settings demand low cost removal of dilute contaminants in air. Many of these contaminants such as volatile organic components (VOCs) and sulfur compounds are biodegradable and can be removed from air streams via biofiltration. The simplest form of biofiltration consists of compost-based systems. More advanced systems designed for unique contaminants are biofilters with bioactive structured packing operating in trickle-bed mode. … more

Date: January 1, 1998

Creator: Klasson, K.T.; Davison, B.H.; Barton, J.W. & Jacobs, J.E.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

A numerical study of shock-acceleration of a diffuse helium cylinder. Revision 1

The development of a shock-accelerated diffuse Helium cylindrical inhomogeneity is investigated using a new numerical method. The new algorithm is a higher-order Godunov implementation of the so-called multi-fluid equations. This system correctly models multiple component mixtures by accounting for differential compressibility effects. This base integrator is embedded in an implementation of adaptive mesh refinement (AMR) that allows efficient increase in resolution by concentrating the computa… more

Date: August 1, 1995

Creator: Greenough, J.A. & Jacobs, J.W.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

A Guide to Community Shared Solar: Utility, Private, and Non-Profit Project Development (Book)

This guide is organized around three sponsorship models: utility-sponsored projects, projects sponsored by special purpose entities - businesses formed for the purpose of producing community solar power, and non-profit sponsored projects. The guide addresses issues common to all project models, as well as issues unique to each model.

Date: May 1, 2012

Creator: Coughlin, J.; Grove, J.; Irvine, L.; Jacobs, J. F.; Johnson Phillips, S.; Sawyer, A. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Re-Entry Flight Demonstration Number One (RFD-1): Final Snap-10A Safety Flight-Test-Plan

No Description Available.

Date: March 1, 1963

Creator: Erickson, C. E.; Hegge, J. I.; Jacobs, J.; Klett, R. D.; Spahr, H. R.; Togami, H. K. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Field tests of X-ray backscatter mine detection

The implementation of a backscattered X-ray landmine detection system has been demonstrated in laboratories at both Sandia National Laboratories (SNL) and the University of Florida (UF). To assess the system`s response to a variety of objects, buried plastic and metal antitank landmines, surface plastic antipersonnel landmines, and surface metal fragments were used as targets. The X-ray machine used for the field test system was an industrial X-ray machine which was operated at 150 kV and 5 mZ … more

Date: August 1, 1998

Creator: Lockwood, G. J.; Shope, S. L.; Wehlburg, J. C.; Selph, M. M.; Jojola, J. M.; Turman, B. N. et al.

Item Type: Article

Partner: UNT Libraries Government Documents Department

open access

Operation of Electrolytic Manganese Pilot Plant: Boulder City, Nevada

From Introduction: "This report records a chapter in the history of the development of an electrolytic manganese industry in the United States."

Date: 1946

Creator: Jacobs, J. H.; Hunter, J. W.; Knickerbocker, R. G.; Yarroll, W. H.; Churchward, P. E.; Lewis, R. W. et al.

Item Type: Report

Partner: UNT Libraries Government Documents Department

open access

Experimental study of instability growth patterns of a shock- accelerated, thin fluid layer

Date: January 1, 1993

Creator: Jacobs, J.W. (Arizona Univ., Tucson, AZ (United States). Dept. of Aerospace and Mechanical Engineering); Jenkins, D.G.; Klein, D.L. & Benjamin, R.F. (Los Alamos National Lab., NM (United States))

Item Type: Article

Partner: UNT Libraries Government Documents Department