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Journals

On an Approximate Minimax Circle Closest to a Set of Points

April 15, 2003

Author(s)

Saul I. Gass, Christoph J. Witzgall

We show how the Chebychev minimax criterion for finding a circle closest to a set of points can be approximated well by standard linear programming procedures.

Extension of the Torsional Crystal Viscometer to Measurements in the Time Domain

April 15, 2003

Author(s)

R F. Hafer, Arno R. Laesecke

This paper reports the first wide-ranging application of the free-mode measurement technique to a torsional crystal viscometer. The viscous damping of the fluid

Mode-locked laser pulse trains with subfemtosecond timing jitter synchronized to an optical reference oscillator

April 15, 2003

Author(s)

A Bartels, Scott A. Diddams, T M. Ramond, Leo W. Hollberg

Effects of interlayer electrode thickness in Nb/(MoSi₂/Nb)_N stacked Josephson junctions

April 14, 2003

Author(s)

Yonuk Chong, Paul Dresselhaus, Samuel Benz, John E. Bonevich

Dense vertically stacked Josephson junction arrays are being developed because they are desirable for voltage metrology applications. We present measurements of

A catalytic mechanism for D-Tyr-tRNA(Tyr) deacylase based on the crystal structure of Hemophilus influenzae HI0670

April 11, 2003

Author(s)

Kap Lim, A Tempczyk, N Bonander, J Toedt, A Howard, E. Eisenstein, O Herzberg

Governmental Approaches to Standards in World Trade

April 9, 2003

Author(s)

Roger Marks

Standards have become a critical element in world trade. Within the guidelines set by the World Trade Organization, governments have developed strategies to

Spatial Methods for Event Reconstruction in CLEAN

April 9, 2003

Author(s)

Kevin Coakley, D N. Mckinsey

In CLEAN (Cryogenic Low Energy Astrophysics with Noble gases), a proposed neutrino and dark matter detector, background discrimination is possible if one can

Performance-Based Fire Protection of Historical Structures

April 6, 2003

Author(s)

Richard W. Bukowski, V Nuzzolese, M Bindo

Performance-based fire protection design methods are particularly appropriate for renovation of historical and culturally significant buildings. This is because

Conventional Cells - Monoclinic I-& C-Centered Cells

April 3, 2003

Author(s)

Alan D. Mighell

In the selection of a centered cell in the monoclinic system, it is recommended that the experimentalist select an I-centered cell for those cases in which it

Interconnect Fabrication by Superconformal Iodine-Catalyzed Chemical Vapor

April 3, 2003

Author(s)

Daniel Josell, S D. Kim, Daniel Wheeler, Thomas P. Moffat, S G. Pyo

The mechanism behind superconformal filling of fine features during surfactant catalyzed chemical vapor deposition is described and the metrology required to

Combinatorial Measurements of Crystallization Growth Rate and Morphology in Thin Films of Isotactic Polystyrene

April 1, 2003

Author(s)

Kathryn L. Beers, Jack F. Douglas, Eric J. Amis, Alamgir Karim

Combinatorial methods are utilized to study the influence of film thickness, h, and crystallization temperature, T, on the crystallization of isotactic

Statistical Uncertainty Analysis of Key Comparison CCEM-K2

April 1, 2003

Author(s)

Nien F. Zhang, N Sedransk, Dean G. Jarrett

The details of a statistical uncertainty analysis applied to key comparison CCEM-K2 are reported. The analysis presented here provides an approach for

The Advanced Encryption Standard (AES): Raising the Bar for Cryptography

April 1, 2003

Author(s)

William E. Burr

This paper describes how the National Institute of Standards and Technology (NIST) selected the Advanced Encryption Standard (AES), a new standard symmetric key

High-Accuracy Determination of the Dependence of the PhotoluminescenceEmission Energy on Alloy Composition in Al_xGa_1-xAs Films

April 1, 2003

Author(s)

Lawrence H. Robins, J T. Armstrong, Ryna B. Marinenko, Albert J. Paul, J G. Pellegrino, Kristine A. Bertness

In an effort to improve the accuracy of photoluminescence (PL)spectroscopy as a composition (Al mole fraction) measurement method forthe Al xGa 1-xAs alloy

Report to Council From Reference Materials, Reference Data Subcommittee

April 1, 2003

Author(s)

John A. Tesk, K White

Subcommittee & member actions: H Membership is adjusted for 2003-2004. H Society approval sought for co-sponsorship of a NIST symposium on Cell Signaling. H RM

Structure of Sapphire Bicrystal Boundaries Produced by Liquid-Phase Sintering

April 1, 2003

Author(s)

B Hockey, Sheldon M. Wiederhorn, J Blendell, Jong S. Lee, M K. Kang

Vitreous bonded aluminum oxide bicrystals were formed by growing oriented sapphire through polycrystalline tapes of anorthite-bonded aluminum oxide. The

Structure and Electronic Properties of the Orthorhombic MoRuP Superconductor Prepared at High Pressure

April 1, 2003

Author(s)

Winnie K. Wong-Ng, W Y. Ching, Y N. Xu, James A. Kaduk, I Shirontani, L Swartzendruber

The new superconductor, orthorhombic MoRuP (o-MoRuP), was prepared under high pressure, and its structure was refined using the X-ray Rietveld technique. The

Re-Measurement of Peritactic Temperature of the Sigma Phase in the Ta-Pd System

April 1, 2003

Author(s)

Richard M. Waterstrat

The anomalously high peritectic temperature reported for the sigma-phase in the Ta-Pd system together with the liklihood that significant losses of palladium

Flux Pinning and Properties of Solid-Solution (Y,Nd)_1+xBa_2-xCu₃O_7-δ Superconductors

April 1, 2003

Author(s)

T J. Haugan, M E. Fowler, J C. Tolliver, Paul N. Barnes, Winnie K. Wong-Ng, Lawrence P. Cook

The effect of chemical composition variations on the flux pinning and physical properties of (Y,Nd)1+xBa2-xCu3O7-d superconductors was studied in powders

Accelerator Aging Effects During Copper Electrodeposition

April 1, 2003

Author(s)

Thomas P. Moffat, B C. Baker, Daniel Wheeler, Daniel Josell

Slow sweep rate voltammetric analysis of the Cu/Cu(II) deposition reaction is shown to be an effective tool for examining aging effects associated with thiol

High Resolution Infrared Studies of the Ņ2, Ņ4 Bands of ³⁴S ¹⁶O₃ Including Both Intensity and Wavenumber Perturbations

April 1, 2003

Author(s)

J Barber, Tony Masiello, E T. Chrysostom, J Nibler, A G. Maki, A Weber, Thomas A. Blake, R L. Sams

The infrared spectrum of the Ņ 2, Ņ 4 bending mode region of 34S-substituted sulfur trioxide, 34S 16O 3, has been recorded at a resolution of 0.0025 cm -1. The

Electronic Properties of Quantum-Dot Molecules

April 1, 2003

Author(s)

W Jaskolski, M Zielinski, Garnett W. Bryant

We investigate the electronic structure of several double quantum dot systems: (I) hetero-dot artificial molecules built from two CdS chemically synthesized

Optical Frequency Standards and Measurement

April 1, 2003

Author(s)

John L. Hall, Jun Ye

This paper celebrates the progress in optical frequency standards and measurement, won by the 40 years of dedicated work of world-wide teams working in

Asymptotic Properties of Self-Energy Coefficients

April 1, 2003

Author(s)

U Jentschura, E O. LeBigot, Peter J. Mohr, Paul Indelicato, G Soff

We investigate the asymptotic properties of higher-order binding corrections to the one-loop self energy of excited states in atomic hydrogen. We evaluate the

Optimizing the Fast Rydberg Quantum Gate

April 1, 2003

Author(s)

M S. Safronova, Carl J. Williams, Charles W. Clark

The fast phase gate scheme, in which the qubits are atoms confined in sites of an optical lattice, and gate operations are mediated by excitation of Rydberg

Generalization of the Coupled Dipole Method to Periodic Structures

April 1, 2003

Author(s)

A Rahmani, Garnett W. Bryant, P C. Chaumet

We present a generalization of the coupled dipole method to the scattering of light by periodic structures.

An Investigation of the Reactivity of OH With Fluoroethanes: CH₃CH₂F (HFC-161), CH₂FCH₂F (HFC-152), and CH₃CHF₂ (HFC-152a)

April 1, 2003

Author(s)

S N. Kozlov, Vladimir L. Orkin, Michael J. Kurylo III

Rate constants for the reactions of OH radicals with fluoroethane, 1,2-difluoroethane, and 1,1-difuoroethane were measured using the flash photolysis resonance

Instrumented Indentation and Ultrasonic Velocity Techniques for the Evaluation of Creep Cavitation in Silicon Nitride

April 1, 2003

Author(s)

Gerald V. Blessing, Sheldon M. Wiederhorn, W E. Luecke, Douglas T. Smith

Instrumented indentation and ultrasonic wave velocity techniques combined with precise density change measurements and transmission electron microscopy (TEM)

Larger Value and SI Measurement of the Improved Cryogenic Capacitor for the Electron-Counting Capacitance Standard

April 1, 2003

Author(s)

Neil M. Zimmerman, Mahmoud A. El-Sabbagh, Yicheng Wang

We report on several advances in the development of a cryogenic vacuum-gap capacitor C_cryo, for use with the electron-counting capacitance standard (ECCS)

Flame Retardant Mechanism of Silica - Effects of Molecular Weight of Resin

April 1, 2003

Author(s)

Takashi Kashiwagi, John R. Shields, Richard H. Harris Jr., Rick D. Davis

The effects of resin molecular weight, M w, on the flame retardant mechanism of silica were studied using two different molecular weights of PMMA, 122,000 g/mol

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