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Journals

Crystal structure of YbaB from Haemophilus influenzae (HI0442), a protein of unknown function coexpressed with the recombinational DNA repair protein RecR

February 1, 2003

Author(s)

Kap Lim, Huan Zhang, A Tempczyk, W Krajewski, N Bonander, J Toedt, A Howard, Edward Eisenstein, O Herzberg

A SURF Beamline for Synchrotron Source-Based Absolute Radiometry

February 1, 2003

Author(s)

Ping-Shine Shaw, Uwe Arp, Howard W. Yoon, Robert D. Saunders, Albert C. Parr, Keith R. Lykke

A new source-based radiometry beamline at Synchrotron Ultraviolet Radiation Facility (SURF III) was constructed recently. The goal of this beamline is to...

FASCAL 2: A New NIST Facility for the Calibration of the Spectral Irradiance of Sources

February 1, 2003

Author(s)

Howard W. Yoon, J E. Proctor, Charles E. Gibson

The Facility for Automated Spectroradiometric Calibrations (FASCAL) is the primary facility for spectral irradiance and spectral radiance calibrations at NIST...

Geometric Area Measurements of Circular Apertures for Radiometry at NIST

February 1, 2003

Author(s)

J B. Fowler, Maritoni A. Litorja

NIST has established a geometric aperture-area measurement facility for circular apertures. The instrument consists of an interferometrically controlled XY...

Measured Versus Predicted Performance of Building Integrated Photovoltics

February 1, 2003

Author(s)

Mark W. Davis, Arthur H. Fanney, Brian P. Dougherty

The lack of predictive performance tools creates a barrier to the widespread use of building integrated photovoltaic panels. The National Institute of Standards...

Affinity Extraction Combined with Stable Isotope Dilution LC/MS for the Determination of 5-Methyltetrahydrofolate in Human Plasma

February 1, 2003

Author(s)

Bryant C. Nelson, Christine M. Pfeiffer, S A. Margolis, C Nelson

Crack Growth Threshold in Soda Lime Silicate Glass: Role of Hold-Time

February 1, 2003

Author(s)

J -. Guin, Sheldon M. Wiederhorn

Atomic force microscopy was used to examine the shapes of cracks and residual features left behind on the fracture surface after holding cracks at a stress...

Thermal Stresses and Microcracking in Calcite and Dolomite Marbles via Finite Element Modelling

February 1, 2003

Author(s)

T Weiss, S Siegesmund, Lin-Sien H. Lum

Microstructure-based finite element simulations were used to study the thermomechanical behavior of calcite and dolomite marbles. For a given mineral...

Incoherent Neutron Scattering and the Dynamics of Thin Film Photoresist Polymers

February 1, 2003

Author(s)

Christopher L. Soles, Jack F. Douglas, Eric K. Lin, Joseph~undefined~undefined~undefined~undefined~undefined Lenhart, Ronald L. Jones, Wen-Li Wu, D M. Goldfarb, M Angelopoulos

Elastic incoherent neutron scattering is employed to parameterize changes in the atomic/molecular mobility in lithographic polymers as a function of film...

Quantum and Classical Noise in Practical Quantum Cryptography Systems Based on Polarization-Entangled Photons

February 1, 2003

Author(s)

Stefania Castelletto, Ivo P. Degiovanni, M L. Rastello

Quantum cryptography key distribution (QCKD) experiments have been recently based on polarization entangled photons. However, in any practical realization...

Analysis of the Ņ₂, Ņ₄ Infrared Hot Bands and Ņ₁ CARS Spectrum of ³⁴S¹⁶O₃

February 1, 2003

Author(s)

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

High-resolution (0.0015 cm -1) infrared spectroscopy has been used to study the 34S 16O 3 IR-active hot bands originating from the Ņ 2 and Ņ 4 bending mode...

Quantum Efficiency of Solar-Blind Semiconductor Photodiodes in the Far Ultraviolet

February 1, 2003

Author(s)

Robert E. Vest, B Hertog, P Chow

A difficulty in diverse metrological applications is the measurement of relatively low intensity ultraviolet radiation in the presence of an intense visible...

Improved Broadband Blackbody Calibrations at NIST for Low-Background Infrared Applications

February 1, 2003

Author(s)

Adriaan C. Carter, Timothy M. Jung, Allan W. Smith, Steven R. Lorentz, Raju V. Datla

The Low Background Infrared (LBIR) facility at The National Institute of Standards and Technology (NIST) has continued to develop its facilities and knowledge...

Stray-Light Correction Algorithm for Spectrographs

February 1, 2003

Author(s)

Steven W. Brown, Bettye C. Johnson, M Feinholz, M Yarbrough, S Flora, Keith R. Lykke, D K. Clark

In this work, we describe an algorithm to correct a spectrograph's response for stray light. Two recursion relations are developed: one to correct the system...

Parallax Measurements of Integrated Circuit Interconnects Using a Scanning Transmission Electron Microscope

February 1, 2003

Author(s)

Zachary H. Levine, J J. Gao, S Neogi, T M. Levin, J H. Scott, Steven E. Grantham

At 300 ke V scanning transmission electron microscope was used to obtain tilt-series images of two two-level copper integrated circuit samples. The center-to...

Facility for Extreme Ultraviolet Reflectometry of Lithography Optics

February 1, 2003

Author(s)

Charles S. Tarrio, S Grantham, Thomas B. Lucatorto

Currently the most demanding application of extreme-ultraviolet (EUV) optics is in lithography. A commercial extreme-ultraviolet stepper will likely have six or...

First-Principles Calculations of Structural Electronic Vibrational and Magnetic Properties of C₆₀ and C₄₈ N₁₂: A Comparative Study

February 1, 2003

Author(s)

Rui-Hua Xie, G C. Bryant, L Jensen, V H. Smith

The structural, electronic, vibrational, and magnetic properties of the C 48N 12 azafullerene and C 60 are comparatively studied from the first-principles...

Accurate Efficient Evaluation of Lommel Functions for Arbitrarily Large Arguments

February 1, 2003

Author(s)

Eric L. Shirley, E K. Chang

It can be difficult to evaluate Lommel functions U_n(u,v) and V_n(u,v) when u and v are both large. Here, we present an accurate means to evaluate such...

Radiometrically Deducing Aperture Sizes

February 1, 2003

Author(s)

Allan W. Smith, Adriaan C. Carter, Steven R. Lorentz, Timothy M. Jung, Raju V. Datla

The desire for high-accuracy infrared sources suitable for low-background seeker/tracker calibrations pushes the limits of absolute cryogenic radiometry and...

Droplet-Laden Homogeneous Turbulent Flow Over Unheated and Heated Cylinders

February 1, 2003

Author(s)

Cary Presser, G Papadopoulos, J F. Widmann

The dispersal of high boiling point liquid fire suppression agents around solid obstacles is investigated to obtain a better understanding of the physical...

Heat Capacities Enthalpy Increments and Derived Thermodynamic Functions for Benzophenone Between the Temperatures 5 K and 440 K

February 1, 2003

Author(s)

Robert D. Chirico, S E. Knipmeyer, W V. Steele

Heat capacities and clitlialpy increments between the temperatures T = 5 K and T = 440 l@ were measured with adiabatic calorimetrybejizopheiione. The triple...

Heat Capacities, Enthelpy Increments and Derived Thermodynamic Functions for Naphthalene Between the Temperatures 5K and 440K

February 1, 2003

Author(s)

Robert D. Chirico, S E. Knipmeyer, W V. Steele

Heat capacities and clitlialpy increments between the temperatures T = 5 K and T = 440 K were measured with adiabatic calorimetry for naphthalene. The triple...

NIST Databases for Surface Analysis by Auger-Electron Spectroscopy and X-Ray Photoelectron Spectroscopy

February 1, 2003

Author(s)

Cedric J. Powell, Aleksander Jablonski

A brief description is given of four databases issued by the National Institute of Standards and Technology (NIST) for applications in surface analysis by Auger...

Molecular Dynamics Simulations of End-to-End Contact Formation in Hydrocarbon Chains in Water and Aqueous Urea Solution

February 1, 2003

Author(s)

Raymond D. Mountain, D Thirumalai

We probe urea-denaturation mechanism using molecular dynamics simulations of an elementary folding event, namely, the formation of end-to-end contact in the...

A Proposal for a Standard Nomenclature and Interactive Database of Parameters and Correction Algorithms Used in Quantitative Electron Probe Microanalysis.

February 1, 2003

Author(s)

J T. Armstrong, J H. Scott, John A. Small, Eric B. Steel

One page abstract.

Ultraviolet Absorption Spectrum and Cross-Sections of Ethynyl (C₂H) Radicals

February 1, 2003

Author(s)

Askar Fahr

This work reports the ultraviolet absorption detection and cross-sections of ethynyl (C 2H) radicals in the wavelength range of 235 nm to 270 nm at T=298 K...

Accurate spectral characterization of polarization-dependent loss

February 1, 2003

Author(s)

Rex M. Craig

Building on previous work, a rapid, automated, non-mechanical measurement system for spectral characterization of polarization-dependent loss (PDL) has been...

Dynamic Error Correction of a Digitizer for Time Domain Metrology

February 1, 2003

Author(s)

David I. Bergman

A method for numerical correction of distortion in a digitizer used for metrology applications is described. Investigation of the digitizer's error behavior in...

The Essentials of a Database Quality Process

February 1, 2003

Author(s)

D M. Blakeslee, J R. Rumble

Many steps are involved in the process of turning an initial concept for a database into a finished product that meets the needs of its user community. In this...

Supernova Observation Via Neutrino-Nucleus Elastic Scattering in the CLEAN Detector

February 1, 2003

Author(s)

C J. Horowitz, Kevin Coakley, D N. Mckinsey

Development of large mass detectors for low energy neutrinos and dark matter may allow supernova detection via neutrino-nucleus elastic scattering. An elastic...

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