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Evaluating late detection capability against diverse insider adversaries

Description: This paper describes a model for evaluating the late (after-the-fact) detection capability of material control and accountability (MCandA) systems against insider theft or diversion of special nuclear material. Potential insider cover-up strategies to defeat activities providing detection (e.g., inventories) are addressed by the model in a tractable manner. For each potential adversary and detection activity, two probabilities are assessed and used to fit the model. The model then computes the … more
Date: December 3, 1987
Creator: Sicherman, A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Removable, hermetically-sealing, filter attachment system for hostile environments

Description: A removable and reusable filter attachment system is disclosed. A filter medium is fixed to, and surrounded by, a filter frame having a coaxial, longitudinally extending, annular rim. The rim engages an annular groove which surrounds the opening of a filter housing. The annular groove contains a fusible material and a heating mechanism for melting the fusible material. Upon resolidifying, the fusible material forms a hermetic bond with the rim and groove. Remelting allows detachment and replace… more
Date: June 3, 1981
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Implicit Plasma Simulation

Description: Implicit time integration methods have been used extensively in numerical modelling of slowly varying phenomena in systems that also support rapid variation. Examples include diffusion, hydrodynamics and reaction kinetics. This article discussed implementation of implicit time integration in plasma codes of the ''particle-in-cell'' family, and the benefits to be gained.
Date: March 3, 1985
Creator: Langdon, A. B.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

High-voltage coaxial switch

Description: A coaxial high voltage, high current switch having a solid cylindrical cold cathode coaxially surrounded by a thin hollow cylindrical inner electrode and a larger hollow cylindrical outer electrode is described. A high voltage trigger between the cathode and the inner electrode causes electrons to be emitted from the cathode and flow to the inner electrode preferably through a vacuum. Some of the electrons penetrate the inner electrode and cause a volumetric discharge in the gas (which may be m… more
Date: June 3, 1981
Creator: Rink, J. P.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Simultaneously time- and space-resolved spectroscopic characterization of laser-produced plasmas

Description: The CHROMA laser facility at KMS Fusion has been used to irradiate a variety of microdot targets. These include aluminum dots and mixed bromine dots doped with K-shell (magnesium) emitters. Simultaneously time- and space-resolved K-shell and L-shell spectra have been measured and compared to dynamic model predictions. The electron density profiles are measured using holographic interferometry. Temperatures, densities, and ionization distributions are determined using K-shell and L-shell spectra… more
Date: March 3, 1988
Creator: Charatis, G.; Young, B. K. F.; Busch, G. E.; Cerjan, C. J.; Goldstein, W. H.; Osterheld, A. L. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Low-Cost Solar Array Project. Task I. Silicon material: investigation of the hydrogenation of SiCl/sub 4/. Fifth quarterly report

Description: Reaction kinetic measurements on the hydrochlorination of SiCl/sub 4/ and mg silicon metal in the presence of a copper catalyst were last reported as a function of reaction temperature, reactor pressure and H/sub 2//SiCl/sub 4/ ratio, 3 SiCl/sub 4/ + 2 H/sub 2/ + Si ..-->.. 4 SiHCl/sub 3/. The same reaction was repeated at a lower catalyst loading of 2 wt%. In the presence of 2 wt% cuprous chloride (based on silicon metal), the hydrochlorination reaction rate is doubled to give about the sam… more
Date: July 3, 1980
Creator: Mui, J. Y. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Comparison between calculation and measurement of energy deposited by 800 MeV protons

Description: The High Energy Transport Code, HETC, was obtained from the Radiation Shielding Information Center (RSIC) at Oak Ridge National Laboratory and altered as necessary to run on a CDC 7600 using the LTSS software in use at LLNL. HETC was then used to obtain calculated estimates of energy deposited, for comparison with a series of benchmark experiments done by LLNL. These experiments used proton beams of various energies incident on well-defined composite targets in good geometry. In this report, tw… more
Date: April 3, 1980
Creator: Loewe, W.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

CAMAC serial highway interface for the LSI-11

Description: A CAMAC Serial Highway Interface has been designed for the Local Control and Instrumentation System of the Mirror Fusion Test Facility. There are over 50 distinguishable systems in the facility, each of which consists of the LSI-11 computer, fiber optic communication links, and the CAMAC system. The LSI-11 computer includes a 32k memory, serial modem interface and the CAMAC Serial Highway Interface.
Date: April 3, 1980
Creator: Lau, N.H.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Defluoridation study for Boise geothermal water

Description: Methods of removing fluorides from water are reviewed and recommendations are made for treating geothermal water used by the Boise Geothermal Project, Boise, Idaho. The Boise geothermal water except for its high fluoride content would be high quality, suitable for primary drinking water. Fluoride ranges from about 15 to 25 mg/l in water from various wells in the Boise region where the Project plans to obtain hot water. Four techniques for removing fluorides from water have been studied extensiv… more
Date: June 3, 1980
Creator: Rigdon, L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Raft River condenser-tube examination

Description: In the program of development of a water treatment for the 5 MW Raft River power plants' carbon steel heat rejection system, four carbon steel tubes were analyzed in this batch. The results of visual and scanning electron microscope examination of the tubes are presented. (MHR)
Date: April 3, 1981
Creator: Suciu, D. F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Downhole Steam Injector. [Patent Application]

Description: An improved downhole steam injector has an angled water orifice to swirl the water through the device for improved heat transfer before it is converted to steam. The injector also has a sloped diameter reduction in the steam chamber to throw water that collects along the side of the chamber during slant drilling into the flame for conversion to steam. In addition, the output of the flame chamber is beveled to reduce hot spots and increase efficiency, and the fuel-oxidant inputs are arranged to … more
Date: June 3, 1981
Creator: Donaldson, A. B. & Hoke, E.
Item Type: Refine your search to only Patent
Partner: UNT Libraries Government Documents Department
open access

Results from exploratory drill hole UE2ce, Northwest Yucca Flat, Nevada Test Site, near the NASH Event

Description: Exploratory drill hole UE2ce was drilled in January 1977 to determine geologic and geophysical characteristics of this site. This report presents geophysical logs, lithology, geologic structure, water table measurements, and physical properties for this drill hole. The data are then extrapolated to the NASH site, an event in U2ce, 55.6 m due north of UE2ce.
Date: March 3, 1982
Creator: Pawloski, G.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Microchannel plate as a detector of minimum ionizing particle

Description: Micro-channel plate multipliers have been used to detect the passage of relativistic charged particles. Measurements of the detection efficiency and pulse height response versus micro-channel plate gain are presented for one, two and three micro-channel plate arrays. The probability of detecting an avalanche on the detector anode per one channel of MCP crossed by the relativistic particle was calculated. Temporal response and time jitter were measured and are reported. The track images of beam … more
Date: September 3, 1980
Creator: Oba, K; Rehak, P & Smith, S D
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

New Mexico's energy resources '81. Annual report of Bureau of Geology in the Mining and Minerals Division of New Mexico Energy and Minerals Department

Description: Although production of U/sub 3/O/sub 8/ declined only slightly in 1980, New Mexico's share of domestic production has declined from 48% in 1976 to 35% in 1980. Production projections indicate a continued decline in 1981 and lower production until at least 1984. New Mexico has 41% of total domestic reserves producible in the $50-per-lb cost category. In keeping with the anticipated steady depletion of reserves, production of crude oil in New Mexico was 69.9 million bls, a 6.3% decline in product… more
Date: September 3, 1981
Creator: Arnold, E. C. & Hill, J. M. (comps.)
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Beam loss by collimation in a neutralizer duct

Description: Beam fractions lost by collimation in a neutralizer duct are computed in x-x' phase space by using three examples of slab beam distributions under a broad range of duct dimensions, beam half-widths, and beam divergences. The results can be used to design compact neutralizers and to specify beam requirements. The computer code ILOST can be used under a broad range of beam conditions to compute the fraction lost by collimation.
Date: April 3, 1980
Creator: Hamilton, G.W. & Willmann, P.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Serial interprocessor communications system

Description: A serial communications system based on the EIA RS232-C standard with modem control lines has been developed. The DLV11-E interface is used for this purpose. All handshaking is done with the modem control lines. This allows totally independent full duplex communication. The message format consists of eight bit data with odd parity and a sixteen bit checksum on the whole message. All communications are fully interrupt driven. A program was written to load a program into a remote LSI-11 using the… more
Date: April 3, 1980
Creator: Labiak, W.; Siemens, P. & Bailey, C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

[Executive Summary of A Proposal for the Establishment of a Texas Academy of Mathematics and Science at North Texas State University]

Description: Executive summary of a proposal for the establishment of a Texas Academy of Mathematics and Science at North Texas State University, including information on the purpose, rationale and need, a description of the academy, personnel, organizational structure, management, a budget summary, and expected outcomes.
Date: June 3, 1987
Creator: Miller, James R.
Item Type: Refine your search to only Paper
Partner: Texas Academy of Mathematics and Science
open access

[A Proposal for the Establishment of a Texas Academy of Mathematics and Science at North Texas State University]

Description: Proposal for the establishment of a Texas Academy of Mathematics and Science at North Texas State University, including information on the purpose, expected outcomes, rationale and need, academy requirements, a description of the Academy, admission plans, an instructional program, a co-curricular program, the admissions process, nomination and selection criteria, organizational structure, personnel, management, an evaluation, the budget, and special considerations affecting the proposed academy… more
Date: June 3, 1987
Creator: Miller, James R.
Item Type: Refine your search to only Paper
Partner: Texas Academy of Mathematics and Science
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