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Journals

Noise averaging and measurement resolution (or a "little noise is a good thing")

January 1, 1999

Author(s)

James E. Potzick

When a continuous quantity is measured with a digital instrument or digitized for further processing, a measurement uncertainty component is incurred from...

Radiationless Resonant Raman Scattering at the Ar K Edge

January 1, 1999

Author(s)

Thomas W. LeBrun, S H. Southworth, G B. Armen, M A. MacDonald, Y Azuma

Partial cross sections for Ar K-LZL3(1 D2)np, n=4 and 5 spectator Auger states excited by x-ray absorption across the K-edge were measured and compared with...

Algorithms for Calculating Single-Atom Step Heights

January 1, 1999

Author(s)

Joseph Fu, V W. Tsai, R Koning, Ronald G. Dixson, Theodore V. Vorburger

Recently, measuring Si(111) single atomic steps prompted us to investigate the measuring technique. The section technique is the most popular method for...

AlInP benchmarks for growth of AlGaInP compounds by organometallic vapor-phase epitaxy

January 1, 1999

Author(s)

Kristine A. Bertness, S. R. Kurtz, S. E. Asher, R. C. Reedy

We have demonstrated that source material and growth system purity can be successfully evaluated by characterizing AllnP samples grown by organometallic vapor...

Keeping Analytical Tools in Line with NTRS Goals: An Industry Challenge

January 1, 1999

Author(s)

Thomas J. Shaffner

As we enter the gigabit dynamic random access memory (DRAM) era, stringent demands for higher performance materials characterization are prematurely pushing...

Viewpoint: Roadmaps for Compound Semiconductors: Knowledge-based Investments for Next Century

January 1, 1999

Author(s)

Herbert S. Bennett

Imagine a world without desk-top laser printers or laser fax machines, without cellular telephones or pagers or global positioning, without compact disk (CD)...

Evaluation of Variance in Zeta Potential Measurements

January 1, 1999

Author(s)

M Chapman-Wilbert, S Delagah, J J. Pellegrino

We evaluated sources of varience in the measurement of the surface zeta potential of flat sheet specimens of cellulose di/triacetate membranes with a commercial...

On the International Temperature Scale of 1990 (ITS-90), Part II: Recommended Techniques for Comparisons, at the Highest Level of Accuracy, of Fixed-Point Cells Used for Contact Thermometry

January 1, 1999

Author(s)

Billy W. Mangum, P Bloembergen, M V. Chattle, B Fellmuth, P Marcarino, A I. Pokhodun

Techniques are recommended for comparisons, at the highest levels of accuracy, of fixed-point cells of the defining fixed points, excluding the vapour-pressure...

A Diode-Laser Optical Frequency Standard Based on Laser-Cooled Ca Atoms: Sub-kilohertz Spectroscopy by Optical Shelving Detection

January 1, 1999

Author(s)

Christopher W. Oates, F Bondu, Richard W. Fox, Leo W. Hollberg

We report an optical frequency standard at 657 nm based on laser-cooled/trapped Ca atoms.

Comparison of Results of Calibrating the Magnitude of the Sensitivity of Accelerometers by Laser Interferometry and Reciprocity

January 1, 1999

Author(s)

Beverly F. Payne, David J. Evans

Minimizing the uncertainty in the calibration of accelerometers by the reciprocity method requires minimizing the cross-axis component of the induced motion...

Real-Time Measurements of Condensed-Phase Spectra in Burning Polymers

January 1, 1999

Author(s)

Marc R. Nyden

A major goal of the Building and Fire Research Laboratory is to provide the polymer industry with the technical understanding and measurement tools that are...

Quantifying Fire Model Evaluation Using Functional Analysis

January 1, 1999

Author(s)

Richard D. Peacock, Paul A. Reneke, William D. Davis, Walter W. Jones

Comparisons of predictive fire models with each other or with experimental data have been largely qualitative. By treating these time series curves as infinite...

Upward Flame Spread on Composite Materials

January 1, 1999

Author(s)

Thomas J. Ohlemiller, Thomas Cleary

Three existing models of upward flame spread were tested against intermediate-scale experiments on a vinyl-ester/glass composite. Characterization of rate of...

Vapor Nucleation in a Cryogenic-Fluid-Dissovled-Nitrogen Mixture During Rapid Depressurization

January 1, 1999

Author(s)

Jiann C. Yang, Thomas G. Cleary, Marcia L. Huber, William L. Grosshandler

The behaviour of four cryogenic-fluid-dissolved-nitrogen mixtures inside a pressure vessel during rapid depressurization was investigated through experiment...

Comparisons of Control Charts for Autocorrelated Data

January 1, 1999

Author(s)

Nien F. Zhang

Recently, statistical process control (SPC) methodolgies have been developed to accommodate autocorrelated data. A primary method to deal with autocorrelated...

A Basic Reference State Suitable for Anomaly-Coupled Ocean-Atmosphere Climate Models

January 1, 1999

Author(s)

Anthony J. Kearsley, J Macias, D Stephenson

A large class of ocean-atmosphere models exists in which the ocean state is coupled to the model of the atmosphere only through the anomalies of the ocean state...

Measurement of the 100 nm NIST SRM 1963 by Differential Mobility Analysis

January 1, 1999

Author(s)

George W. Mulholland, Nelson P. Bryner, C M. Croarkin

The number mean diameter of 100 nm NTST Standard Reference Material (SRM) 1963 was measured to be 100.7 nm with an expanded uncertainty at the 95% confidence...

Enhancement of R123 Pool Boiling by the Addition of N-Hexane

January 1, 1999

Author(s)

Mark A. Kedzierski

This paper presents the heat transfer data used to file international patent WO 94/18282. The data consisted of pool boiling performance of a GEWA-TTM surface...

Correlated-Photon Metrology without Absolute Standards

January 1, 1999

Author(s)

Alan L. Migdall

Cysteines beta 93 and beta 112 as Probes of Conformational and Functional Events at the Human Hemoglobin Subunit Interfaces

January 1, 1999

Author(s)

G B. Vasquez, M Karavitis, X Ji, I Pechik, W S. Brinigar, G L. Gilliland, C Fronticelli

Human hemoglobin is a tetrameric protein containing two types of subunits, [alpha] and [Beta]. They assemble forming two different interfaces. The [alpha 1[Beta...

Thermodynamic Linkage Between Protonation and Binding of Inhibitors to HIV Protease

January 1, 1999

Author(s)

J Trylska, J Antosiewicz, M Geller, C N. Hodge, R M. Klabe, M S. Head, M K. Gilson

Time synchronization over the Internet Using an Adaptive Frequency-Locked Loop

January 1, 1999

Author(s)

Judah Levine

Time Transfer Using a Multi-Channel GPS Receivers

January 1, 1999

Author(s)

Judah Levine

Introduction to Time and Frequency Metrology

January 1, 1999

Author(s)

Judah Levine

Environmental Factors and Hydrogen Maser Frequency Stability

January 1, 1999

Author(s)

Thomas E. Parker

Interference-induced Optical Gain Without Population Inversion in Cold, Trapped Ions

January 1, 1999

Author(s)

John E. Kitching, Leo W. Hollberg

Realization of a spectral radiance responsivity scale with a laser-based source and Si radiance meters

January 1, 1999

Author(s)

George P. Eppeldauer, Steven W. Brown, Thomas C. Larason, M Racz, R Lykke k

Surface Sensitivity of Auger-Electron Spectroscopy and X-Ray Photoelectron Spectroscopy

January 1, 1999

Author(s)

Cedric J. Powell, Aleksander Jablonski, I S. Tilinin, S Tanuma, David R. Penn

Brief review of primary methods applicable to key comparisons in acoustics

January 1, 1999

Author(s)

Victor Nedzelnitsky

Historically, various techniques have been used in acoustics to attempt to establish and measure sound pressures (spatially uniform amplitude of sound pressure...

Structured, textured or engineered surfaces

January 1, 1999

Author(s)

Christopher J. Evans, James B. Bryan

Fine scale periodic structures offer designers additional freedom to create novel functions or combinations of functions. This emerging field of structured...

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