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Groundwater Level Status Report for Fiscal Year 2006 Los Alamos National Laboratory

Description: The status of groundwater level monitoring at Los Alamos National Laboratory in Fiscal Year 2006 is provided in this report. The Groundwater Level Monitoring Project was instituted in 2005 for providing a framework for the collection and processing of quality controlled groundwater level data. This report summarizes groundwater level data for 158 monitoring wells, including 43 regional aquifer wells, 23 intermediate wells, and 92 alluvial wells. Pressure transducers were installed in 132 monito… more
Date: March 30, 2007
Creator: Allen, Shannon P. & Koch, Richard J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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User’s Guide for Getter Rate Test System

Description: This User’s Guide describes the operation and maintenance of the Getter Rate Test System, including the mechanical equipment, instrumentation, and datalogger/computer components. The Getter Rate Test System includes equipment and instrumentation to conduct two getter rate tests simultaneously. The mechanical equipment comprises roughing and high-vacuum pumps, heated test chambers, standard hydrogen leaks, and associated piping and valves. Instrumentation includes thermocouples, pressure (vacuum… more
Date: June 27, 2007
Creator: Elmore, Monte R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Digital-to-Analogue Converter (Punched Tape to X-Y Plotter)

Description: A digital-to-analog converter is described which is a part of a system that converts punched-tape digital data to analog data in a series of points drawn by an x-y plotter. The converter is designed to plot accurately tapes that contain information other than coded numerical coordinates. Operation of the converter is also described along with format requirements and power supplies. (J.R.D.)
Date: January 17, 1962
Creator: Wall, G. N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Groundwater Level Status Report for 2005 Los Alamos National Laboratory

Description: The status of groundwater level monitoring at Los Alamos National Laboratory (LANL) in 2005 is provided in this report. The Groundwater Level Monitoring Project was instituted in 2005 to provide a framework for the collection and processing of quality controlled groundwater level data. This report summarizes groundwater level data for 137 monitoring wells, including 41 regional aquifer wells, 22 intermediate wells, and 74 alluvial wells. Pressure transducers were installed in 118 monitoring wel… more
Date: May 15, 2006
Creator: Allen, S. P. & Koch, R. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Intricate Mechanisms-on-a Chip Enabled by 5-Level Surface Micromachining

Description: Surface micromachining generally offers more design freedom than related technologies, and it is the technology of choice for most microelectromechanical applications that require multi-level structures. However, the design flexibility that surface micromachining offers is not without limitations. In addition to determining how to fabricate devices in a planar world, the designer also needs to consider issues such as film quality, thickness, residual stress, topography propagation, stringers, p… more
Date: March 30, 1999
Creator: Allen, J. J.; McWhorter, P. J.; Miller, S. L.; Rodgers, M. S.; Smith, J. H. & Sniegowski, J. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Groundwater level status report for 2009, Los Alamos National Laboratory

Description: The status of groundwater level monitoring at Los Alamos National Laboratory in 2009 is provided in this report. This report summarizes groundwater level data for 179 monitoring wells, including 55 regional aquifer wells (including 11 regional/intermediate wells), 26 intermediate wells, 98 alluvial wells, and 12 water supply wells. Pressure transducers were installed in 161 monitoring wells for continuous monitoring of groundwater levels. Time-series hydrographs of groundwater level data are pr… more
Date: March 1, 2010
Creator: Koch, Richard J. & Schmeer, Sarah
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Horizontal Advanced Tensiometer

Description: An horizontal advanced tensiometer is described that allows the monitoring of the water pressure of soil positions, particularly beneath objects or materials that inhibit the use of previous monitoring wells. The tensiometer includes a porous cup, a pressure transducer (with an attached gasket device), an adaptive chamber, at least one outer guide tube which allows access to the desired horizontal position, a transducer wire, a data logger and preferably an inner guide tube and a specialized jo… more
Date: June 22, 2004
Creator: Hubbell, Joel M. & Sisson, James B.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
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High Frequency Laser-Based Ultrasound

Description: To obtain micrometer resolution of materials using acoustics requires frequencies around 1 GHz. Attenuation of such frequencies is high, limiting the thickness of the parts that can be characterized. Although acoustic microscopes can operate up to several GHz in frequency, they are used primarily as a surface characterization tool. The use of a pulsed laser for acoustic generation allows generation directly in the part, eliminating the loss of energy associated with coupling the energy from a p… more
Date: September 12, 2005
Creator: Huber, R; Chinn, D; Balogun, O & Murray, T
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Groundwater Level Status Report for Fiscal Year 2007 - Los Alamos National Laboratory

Description: The status of groundwater level monitoring at Los Alamos National Laboratory in Fiscal Year 2007 is provided in this report. The Groundwater Level Monitoring Project was instituted in 2005 to provide a framework for the collection and processing of quality controlled groundwater level data. This report summarizes groundwater level data for 166 monitoring wells, including 45 regional aquifer wells, 25 intermediate wells, and 96 alluvial wells, and 11 water supply wells. Pressure transducers were… more
Date: March 17, 2008
Creator: Shannon P. Allen, Richard J. Koch
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mointoring Thickness Deviations in Planar Multi-Layered Elastic Structures Using Impedance Signatures

Description: In this letter, a low frequency ultrasonic resonance technique that operates in the (20 - 80 kHz) regime is presented that demonstrates detection of thickness changes on the order of +/- 10{micro}m. This measurement capability is a result of the direct correlation between the electrical impedance of an electro-acoustic transducer and the mechanical loading it experiences when placed in contact with a layered elastic structure. The relative frequency shifts of the resonances peaks can be estimat… more
Date: January 26, 2007
Creator: Fisher, K A
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

COUPLED TRANSMISSION LINES

Description: >Tests on a coupled transmission line resonator show that a fairly accurate value of the coupling coefficient can be predicted by considering line geometry. The measured values of V/sub 02/ and I/sub 02/ appear to agree with predicted values. Development of a resonator for ORIC with two coupled transmission lines is under way. (W.L.H.)
Date: June 1, 1959
Creator: Warsham, R E & Mosko, S W
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Salt Valve and Instrumentation Test Using the Nagle Long Shafted Pump: Final Report

Description: The Salt Valve and Instrumentation Test was done to provide data on equipment performance in high temperature environments similar to that expected in the next large scale application of that technology. The experiment tested three different valves: (1) a valve with the standard valve body and standard high temperature self-packing material; (2) a valve with the standard valve body and stainless steel O-rings; and (3) a magnetic valve that uses a high temperature coil and no packing material. T… more
Date: June 1, 2003
Creator: WELCH, KATHLEEN T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Groundwater level status report for 2010, Los Alamos National Laboratory

Description: The status of groundwater level monitoring at Los Alamos National Laboratory in 2010 is provided in this report. This report summarizes groundwater level data for 194 monitoring wells, including 63 regional aquifer wells (including 10 regional/intermediate wells), 34 intermediate wells, 97 alluvial wells, and 12 water supply wells. Pressure transducers were installed in 162 monitoring wells for continuous monitoring of groundwater levels. Time-series hydrographs of groundwater level data are pr… more
Date: March 1, 2011
Creator: Koch, Richard J. & Schmeer, Sarah
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Impulse Response Estimation for Spatial Resolution Enhancement in Ultrasonic NDE Imaging

Description: This report describes a signal processing algorithm and MATLAB software for improving spatial resolution in ultrasonic nondestructive evaluation (NDE) imaging of materials. Given a measured reflection signal and an associated reference signal, the algorithm produces an optimal least-squares estimate of the impulse response of the material under test. This estimated impulse response, when used in place of the raw reflection signal, enhances the spatial resolution of the ultrasonic measurements b… more
Date: June 25, 2004
Creator: Clark, G A
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

High-Speed Auto-Data System for Blast Studies

Description: A multichannel high-speed automated system for recording digitally the outputs of the analog transducers used in the study of blast effects from small HE charges is described. Test phenomena associated with these studies are recorded in 10 to 40 msec. Installation and operation of this data handling system are described. (J.R.D.)
Date: July 1, 1960
Creator: Jones, R. D. & Smith, J. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Through-Wall Communicatin of Low-Rate Digital Data Using Ultrasound

Description: Wireless communication is ineffective for communicating through a solid steel wall due to the shielding effect of the metal. In some cases, holes can be made in the wall to allow wires to pass through, enabling the transport of electronic data. However, holes are often undesirable because they can reduce the integrity of the wall. This paper describes several approaches for using ultrasound to communicate low-rate digital data through a steel wall. The techniques minimize the complexity and pow… more
Date: September 27, 2006
Creator: Saulnier, G. J.; Scarton, H. A.; Gavens, A. J.; Shoudy, D. A.; Bard, S.; Roa-Prada, S. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Fast Analysis System for Bubble Chamber Data

Description: A type of precision measuring instrument, a flying spot digitizer, for the analysis of bubble chamber data is described. When the flying spot encounters a bubble image, it is attenuated typically 25 to 75% depending on the directness of hit and the bubble chamber photographic and operating parameters. The width of the bell-shaped attenuation curve is approximates the sum of the spot and bubble image diameters, or 40 to 50 mu . The high precision of the FSD derives from the fact that it is possi… more
Date: January 25, 1963
Creator: Hough, P. V. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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MAGNETIC RECORDER FOR NUCLEAR PULSE APPLICATION. Period covered: December 6, 1959 to February 5, 1960

Description: An evaluation of a modulator flux sensitive playback head to be used with an analog magnetic recorder for nuclear pulse information storage was made. The modulator head was found unsultable. A pulse stretching unit was constructed which takes pulses from a standard linear pulse amplifier and provides an output signal suitable for driving a recording head. (For preceding period see ARF-1151- 3.) (C.J.G.)
Date: February 24, 1960
Creator: Burgwald, G.M. & Norton, R.M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Low-jitter sonoluminescence cell

Description: This report constitutes the final report for subcontract B338667. The statement of work for this subcontract was divided into three tasks: Task 1: Produce and quantify the stability of a sonoluminescence cell. The quantification will entail measuring the variation of the amplitude of the light flashes, here called events, and the variation in the time between the individual events i.e., the jitter. On a best effort basis we desire the light amplitude to be stable within 20 So and the jitter bet… more
Date: January 1, 1998
Creator: Lee, R. W., LLNL
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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